Association for Molecular Pathology v. United States Patent & Trademark Office , 689 F.3d 1303 ( 2012 )


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  •  United States Court of Appeals
    for the Federal Circuit
    __________________________
    THE ASSOCIATION FOR MOLECULAR
    PATHOLOGY, THE AMERICAN COLLEGE OF
    MEDICAL GENETICS, THE AMERICAN SOCIETY
    FOR CLINICAL PATHOLOGY, THE COLLEGE OF
    AMERICAN PATHOLOGISTS, HAIG KAZAZIAN,
    MD, ARUPA GANGULY, PHD, WENDY CHUNG, MD,
    PHD, HARRY OSTRER, MD, DAVID LEDBETTER,
    PHD, STEPHEN WARREN, PHD, ELLEN
    MATLOFF, M.S., ELSA REICH, M.S., BREAST
    CANCER ACTION, BOSTON WOMEN’S HEALTH
    BOOK COLLECTIVE, LISBETH CERIANI, RUNI
    LIMARY, GENAE GIRARD, PATRICE FORTUNE,
    VICKY THOMASON, AND KATHLEEN RAKER,
    Plaintiffs-Appellees,
    v.
    UNITED STATES PATENT AND TRADEMARK
    OFFICE,
    Defendant,
    and
    MYRIAD GENETICS, INC.,
    Defendant-Appellant,
    and
    LORRIS BETZ, ROGER BOYER, JACK BRITTAIN,
    ARNOLD B. COMBE, RAYMOND GESTELAND,
    JAMES U. JENSEN, JOHN KENDALL MORRIS,
    THOMAS PARKS, DAVID W. PERSHING, AND
    MICHAEL K. YOUNG,
    ASSOCIATION FOR MOLECULAR   v. PTO                    2
    IN THEIR OFFICIAL CAPACITY AS DIRECTORS OF THE
    UNIVERSITY OF UTAH RESEARCH FOUNDATION,
    Defendants-Appellants.
    __________________________
    2010-1406
    __________________________
    Appeal from the United States District Court for the
    Southern District of New York in Case No. 09-CV-4515,
    Senior Judge Robert W. Sweet.
    ____________________________
    Decided: August 16, 2012
    ____________________________
    CHRISTOPHER A. HANSEN, American Civil Liberties
    Union Foundation, of New York, New York, argued for
    plaintiffs-appellees. With him on the brief were SANDRA
    S. PARK, ADEN FINE, and LENORA M. LAPIDUS. Of counsel
    on the brief were DANIEL B. RAVICHER and SABRINA Y.
    HASSAN, Public Patent Foundation, Benjamin N. Cardozo,
    School of Law, of New York, New York.
    GREGORY A. CASTANIAS, Jones Day, of Washington,
    DC, argued for all defendant-appellants. With him on the
    brief were JENNIFER L. SWIZE, of Washington, DC, ISRAEL
    SASHA MAYERGOYZ and DENNIS MURASHKO, of Chicago,
    Illinois, BRIAN M. POISSANT, LAURA A. CORUZZI and
    EILEEN FALVEY, of New York, New York. Of counsel were
    BENJAMIN JACKSON, and JAY Z. ZHANG, Myriad Genetics,
    of Salt Lake City, Utah.
    MELISSA N. PATTERSON, Attorney, Civil Division, Ap-
    pellate Staff, United States Department of Justice, of
    3                        ASSOCIATION FOR MOLECULAR   v. PTO
    Washington, DC, argued for amicus curiae, United States.
    With her on the brief were STUART F. DELERY, Acting
    Assistant Attorney General, BETH S. BRINKMANN, Deputy
    Assistant Attorney General and SCOTT R. MCINTOSH,
    Attorney. Of counsel was MARK R. FREEMAN.
    THOMAS J. KOWALSKI, Vedder Price PC, of New York,
    New York, for amicus curiae Protein Sciences Corpora-
    tion. With him on the brief were DEBORAH L. LU; and
    ROBERT S. RIGG, of Chicago, Illinois.
    ROBERT A. ARMITAGE, Eli Lilly and Company, Indian-
    apolis, Indiana, for amicus curiae, Eli Lilly and Company.
    With him on the brief was JAMES J. KELLEY.
    CHRISTOPHER M. HOLMAN, University of Missouri-
    Kansas City School of Law, of Kansas City, Missouri, for
    amicus curiae Law Professor Christopher M. Holman.
    CHARLES R. MACEDO, Amster Rothstein & Ebenstein,
    LLP, of New York, New York, for amicus curiae, New
    York Intellectual Property Law Association. Of counsel
    on the brief were RONALD M. DAIGNAULT and MATTHEW B.
    MCFARLANE, Robins, Kaplan, Miller & Ciresi, L.L.P. of
    New York, New York.
    LORI B. ANDREWS, IIT Chicago-Kent College of Law, of
    Chicago, Illinois, for amicus curiae, The American College
    of Embryology, et al. Of counsel was JOSHUA D. SARNOFF,
    DePaul University College of Law, of Chicago, Illinois.
    DEBRA L. GREENFIELD, UCLA Institute for Society and
    Genetics, of Los Angeles, California, for amici curiae, The
    National Women’s Health Network, et al.
    ASSOCIATION FOR MOLECULAR   v. PTO                     4
    KRISTA L. COX, Knowledge Ecology International, of
    Washington, DC, for amicus curiae, Knowledge Ecology
    International, et al.
    RICHARD F. PHILLIPS, Intellectual Property Owners
    Association, of Washington, DC, for amicus curiae, Intel-
    lectual Property Owners Association. With him on the
    brief was KEVIN H. RHODES. Of counsel on the brief were
    PAUL H. BERGHOFF, KEVIN E. NOONAN and JEFFREY P.
    ARMSTRONG, McDonnell Boehnen Hulbert & Berghoff,
    LLP, of Chicago, Illinois. Of counsel were HERBERT C.
    WAMSLEY, Intellectual Property Owners, of Washington,
    DC, and DOUGLAS KENT NORMAN, Eli Lilly & Company, of
    Indianapolis, Indiana.
    BARBARA R. RUDOLPH, Finnegan, Henderson,
    Farabow, Garrett & Dunner, LLP, of Washington, DC, for
    amicus curiae, American Intellectual Property Law Asso-
    ciation. With her on the brief were ROBERT D. LITOWITZ,
    ERIKA HARMON ARNER and DAVID S. FORMAN. Of counsel
    on the brief was WILLIAM G. BARBER, American Intellec-
    tual Property Law Association, of Arlington, Virginia. Of
    counsel were DAVID WARREN HILL, American Intellectual
    Property, of Arlington, Virginia, and ROBERT C. STANLEY,
    Finnegan, Henderson, Farabow, Garrett & Dunner, LLP,
    of Atlanta, Georgia.
    WILLIAM T. ROBINSON, III, American Bar Association,
    of Chicago, Illinois, for amicus curiae, American Bar
    Association. Of counsel on the brief were JOHN P.
    ELWOOD, Vinson & Elkins, LLP, of Washington, DC; and
    MICHAEL A. VALEK, STEPHEN C. STOUT, of Austin, Texas.
    MARK J. GATSCHET, Mark John Gatschet, P.L.L.C., of
    Houston, Texas, for amicus curiae, Mark J. Gatschet and
    5                        ASSOCIATION FOR MOLECULAR   v. PTO
    Richard W. Knight. Of counsel on the brief was RICHARD
    W. KNIGHT, R.W. Knight P.C. of San Antonio, Texas.
    CLAIRE LAPORTE, Foley Hoag, LLP, of Boston, Massa-
    chusetts, for amicus curiae Federal Circuit Bar Associa-
    tion. With her on the brief was JAMES M. FLAHERTY, JR.
    JOHN L. HENDRICKS, Hitchcock Evert, LLP, of Dallas,
    Texas, for amicus curiae, AARP, et al. With him on the
    brief were MEGAN M. O’LAUGHLIN and JOHN T. TOWER. Of
    counsel was MICHAEL R. SCHUSTER.
    J. TIMOTHY KEANE, Harness, Dickey & Pierce, PLC, of
    St. Louis, Missouri, for amicus curiae, BioGenerator, et al
    SUSAN E. MCBEE, Baker, Donelson, Bearman, Cald-
    well, and Berkowitz, P.C., of Washington, DC, for amicus
    curiae, Immatics Biotechnologie, GmbH. With her on the
    brief was BRYAN W. JONES.
    SETH P. WAXMAN, Wilmer Cutler Pickering Hale and
    Dorr, LLP, of Washington, DC, for amicus curiae, Bio-
    technology Industry Organization, et al. With him on the
    brief was THOMAS G. SAUNDERS. Of counsel on the brief
    was MARK C. FLEMING, of Boston, Massachusetts, and
    HANSJORG SAUER, Biotechnology Industry Organization,
    of Washington, DC. Of counsel was ALLEN C. NUNNALLY,
    Wilmer Cutler Pickering Hale and Dorr, LLP, of Boston,
    Massachusetts.
    Jennifer Gordon, Baker Botts, L.L.P. of New York,
    New York, for amicus curiae, Croplife International.
    With her on the brief were STEVEN LENDARIS and
    JENNIFER C. TEMPESTA.
    ASSOCIATION FOR MOLECULAR   v. PTO                       6
    MATTHEW J. DOWD, Wiley Rein LLP, of Washington,
    DC, for amicus curiae, JAMES D. WATSON. With him on
    the brief was JAMES H. WALLACE, JR.
    KURT G. CALIA, Covington & Burling, LLP, of Red-
    wood Shores, California, for amicus curiae, Pharmaceuti-
    cal Research and Manufacturers of America. With him on
    the brief were ROBERT A. LONG, JR. and ALLISON E.
    KERNDT, of Washington, DC, and ALEXA R. HANSEN, of
    San Francisco, California.
    EILEEN M. KANE, Penn State Dickinson School of Law,
    of University Park, Pennsylvania, for amicus curiae,
    Professor Eileen M. Kane.
    GENEVIEVE E. SCOTT, Yale School of Law, of Brooklyn,
    New York, for amicus curiae, Information Society Project
    at Yale Law School Scholars. With her on the brief was
    PRISCILLA J. SMITH.
    ROBERT SACHS, Fenwick & West, LLP, of San Fran-
    cisco, California, for amicus curiae, Advanced Biological
    Laboratories, SA.
    __________________________
    Before LOURIE, BRYSON, and MOORE, Circuit Judges.
    Opinion for the court filed by Circuit Judge LOURIE.
    Opinion concurring in part filed by Circuit Judge MOORE.
    Opinion concurring in part and dissenting in part filed by
    Circuit Judge BRYSON.
    LOURIE, Circuit Judge.
    Myriad Genetics, Inc. and the Directors of the Univer-
    sity of Utah Research Foundation (collectively, “Myriad”)
    appeal from the decision of the United States District
    7                         ASSOCIATION FOR MOLECULAR    v. PTO
    Court for the Southern District of New York holding that
    an assortment of medical organizations, researchers,
    genetic counselors, and patients (collectively, “Plaintiffs”)
    have standing under the Declaratory Judgment Act to
    challenge Myriad’s patents. Ass’n for Molecular Pathol-
    ogy v. U.S. Patent & Trademark Office, 
    669 F. Supp. 2d 365
     (S.D.N.Y. 2009) (“DJ Op.”). Myriad also appeals from
    the district court’s decision granting summary judgment
    that all of the challenged claims are drawn to non-
    patentable subject matter under 35 U.S.C. § 101. Ass’n
    for Molecular Pathology v. U.S. Patent & Trademark
    Office, 
    702 F. Supp. 2d 181
     (S.D.N.Y. 2010) (“SJ Op.”).
    We affirm in part and reverse in part.
    This appeal has returned to us as, a petition for cer-
    tiorari having been filed from our decision of July 29,
    2011, the Supreme Court of the United States granted the
    petition, vacated our decision, and remanded the case to
    us for further consideration in light of its decision in Mayo
    Collaborative Services v. Prometheus, Inc., 
    566 U.S.
    ___,
    
    132 S. Ct. 1289
     (2012). Ass’n for Molecular Pathology v.
    Myriad Genetics, Inc., 
    132 S. Ct. 1794
     (2012). We invited
    and received briefing by the parties and interested amici
    and held oral argument on July 20, 2012. Our decision on
    remand follows. It both decides the issues that were
    before us in the original appeal and evaluates the effect of
    Mayo on those issues.
    On the threshold issue of jurisdiction, we affirm the
    district court’s decision to exercise declaratory judgment
    jurisdiction because we conclude that at least one plain-
    tiff, Dr. Harry Ostrer, has standing to challenge the
    validity of Myriad’s patents. On the merits, we reverse
    the district court’s decision that Myriad’s composition
    claims to “isolated” DNA molecules cover patent-ineligible
    products of nature under § 101 because each of the
    claimed molecules represents a nonnaturally occurring
    ASSOCIATION FOR MOLECULAR   v. PTO                        8
    composition of matter. We also reverse the district court’s
    decision that Myriad’s method claim to screening poten-
    tial cancer therapeutics via changes in cell growth rates of
    transformed cells is directed to a patent-ineligible scien-
    tific principle. We affirm the court’s decision, however,
    that Myriad’s method claims directed to “comparing” or
    “analyzing” DNA sequences are patent ineligible; such
    claims include no transformative steps and cover only
    patent-ineligible abstract, mental steps.
    BACKGROUND
    Plaintiffs brought suit against Myriad, challenging
    the patentability of certain composition and method
    claims relating to human genetics. See DJ Op., 669 F.
    Supp. 2d at 369-76. Specifically, Plaintiffs sought a
    declaration that fifteen claims from seven patents as-
    signed to Myriad are drawn to patent-ineligible subject
    matter under 35 U.S.C. § 101: claims 1, 2, 5, 6, 7, and 20
    of U.S. Patent 5,747,282 (“the ’282 patent”); claims 1, 6,
    and 7 of U.S. Patent 5,837,492 (“the ’492 patent”); claim 1
    of U.S. Patent 5,693,473 (“the ’473 patent”); claim 1 of
    U.S. Patent 5,709,999 (“the ’999 patent”); claim 1 of U.S.
    Patent 5,710,001 (“the ’001 patent”); claim 1 of U.S.
    Patent 5,753,441 (“the ’441 patent”); and claims 1 and 2 of
    U.S. Patent 6,033,857 (“the ’857 patent”).
    The challenged composition claims cover two “iso-
    lated” human genes, BRCA1 and BRCA2 (collectively,
    “BRCA1/2” or “BRCA”), and certain alterations, or muta-
    tions, in these genes associated with a predisposition to
    breast and ovarian cancers. Representative composition
    claims include claims 1, 2, and 5 of the ’282 patent:
    1. An isolated DNA coding for a BRCA1 polypep-
    tide, said polypeptide having the amino acid se-
    quence set forth in SEQ ID NO:2.
    9                        ASSOCIATION FOR MOLECULAR    v. PTO
    2. The isolated DNA of claim 1, wherein said
    DNA has the nucleotide sequence set forth in SEQ
    ID NO:1.
    5. An isolated DNA having at least 15 nucleotides
    of the DNA of claim 1.
    ’282 patent col.153 l.55 – col.154 l.56. 1 SEQ ID NO:2
    depicts the amino acid sequence of the BRCA1 protein,
    and SEQ ID NO:1 depicts the nucleotide sequence of the
    BRCA1 DNA coding region; the latter sequence is collo-
    quially referred to as cDNA. Id. col.19 ll.48-50.
    All but one of the challenged method claims cover
    methods of “analyzing” or “comparing” a patient’s BRCA
    sequence with the normal, or wild-type, sequence to
    identify the presence of cancer-predisposing mutations.
    Representative method claims include claims 1 of the ’999
    and ’001 patents:
    1. A method for detecting a germline alteration in
    a BRCA1 gene, said alteration selected from the
    group consisting of the alterations set forth in Ta-
    bles 12A, 14, 18 or 19 in a human which comprises
    analyzing a sequence of a BRCA1 gene or BRCA1
    RNA from a human sample or analyzing a se-
    quence of BRCA1 cDNA made from mRNA from
    said human sample with the proviso that said
    germline alteration is not a deletion of 4 nucleo-
    tides corresponding to base numbers 4184-4187 of
    SEQ ID NO:1.
    ’999 patent col.161 ll.17-25 (emphases added).
    1    In addition to representative claims 1, 2, and 5 of
    the ’282 patent, other claims to isolated DNA molecules at
    issue in this appeal include: claims 6 and 7 of the ’282
    patent; claims 1, 6, and 7 of the ’492 patent; and claim 1
    of the ’473 patent.
    ASSOCIATION FOR MOLECULAR   v. PTO                       10
    1. A method for screening a tumor sample from a
    human subject for a somatic alteration in a
    BRCA1 gene in said tumor which comprises []
    comparing a first sequence selected from the
    group consisting of a BRCA1 gene from said tu-
    mor sample, BRCA1 RNA from said tumor sample
    and BRCA1 cDNA made from mRNA from said
    tumor sample with a second sequence selected
    from the group consisting of BRCA1 gene from a
    nontumor sample of said subject, BRCA1 RNA
    from said nontumor sample and BRCA1 cDNA
    made from mRNA from said nontumor sample,
    wherein a difference in the sequence of the
    BRCA1 gene, BRCA1 RNA or BRCA1 cDNA from
    said tumor sample from the sequence of the
    BRCA1 gene, BRCA1 RNA or BRCA1 cDNA from
    said nontumor sample indicates a somatic altera-
    tion in the BRCA1 gene in said tumor sample.
    ’001 patent col.155 ll.2-17 (emphasis added). 2
    The final method claim challenged by Plaintiffs is di-
    rected to a method of screening potential cancer therapeu-
    tics. Specifically, claim 20 of the ’282 patent reads as
    follows:
    20. A method for screening potential cancer
    therapeutics which comprises: growing a trans-
    formed eukaryotic host cell containing an altered
    BRCA1 gene causing cancer in the presence of a
    compound suspected of being a cancer therapeu-
    tic, growing said transformed eukaryotic host cell
    in the absence of said compound, determining the
    2   The claims currently before us that recite methods
    of “analyzing” or “comparing” BRCA sequences are: claims
    1 of the ’999, ’001, and ’441 patents and claims 1 and 2 of
    the ’857 patent.
    11                        ASSOCIATION FOR MOLECULAR    v. PTO
    rate of growth of said host cell in the presence of
    said compound and the rate of growth of said host
    cell in the absence of said compound and compar-
    ing the growth rate of said host cells, wherein a
    slower rate of growth of said host cell in the pres-
    ence of said compound is indicative of a cancer
    therapeutic.
    ’282 patent col.156 ll.13–24 (emphases added).
    The challenged claims thus relate to isolated gene se-
    quences and diagnostic methods of identifying mutations
    in these sequences. To place this suit in context, we take
    a step back to provide background on the science involved,
    including the identification of the BRCA genes, and the
    Plaintiffs’ connections to the invention and to Myriad.
    I.
    Human genetics is the study of heredity in human be-
    ings. 3 The human genome, the entirety of human genetic
    information, contains approximately 22,000 genes, which
    form the basis of human inheritance. The majority of
    genes act by guiding the production of polypeptide chains
    that form proteins. Proteins in turn make up living
    matter and catalyze a variety of cellular processes.
    Chemically, the human genome is composed of deoxy-
    ribonucleic acid (“DNA”). Each DNA molecule is made up
    of repeating units of four nucleotide bases—adenine (“A”),
    thymine (“T”), cytosine (“C”), and guanine (“G”)—which
    are covalently linked, or bonded, 4 together via a sugar-
    3  The district court’s opinion, SJ Op., 
    702 F. Supp. 2d
     at 192-203, contains a detailed and comprehensive
    discussion of the science involved in this case. We repeat
    only the basics here.
    4   Covalent bonds are chemical bonds characterized
    by the sharing of electrons between atoms in a molecule.
    ASSOCIATION FOR MOLECULAR   v. PTO                      12
    phosphate, or phosphodiester, backbone. DNA generally
    exists as two DNA strands intertwined as a double helix
    in which each base on a strand pairs, or hybridizes, with a
    complementary base on the other strand: A pairs with T,
    and C with G. Figure 1 below depicts the structure of a
    DNA double helix and the complementary pairing of the
    four nucleotide bases, represented by A, T, C, and G.
    Figure 1
    The linear order of nucleotide bases in a DNA mole-
    cule is referred to as its “sequence.” The sequence of a
    gene is thus denoted by a linear sequence of As, Ts, Gs,
    and Cs. “DNA sequencing” or “gene sequencing” refers to
    the process by which the precise linear order of nucleo-
    tides in a DNA segment or gene is determined. A gene’s
    nucleotide sequence in turn encodes for a linear sequence
    of amino acids that comprise the protein encoded by the
    gene, e.g., the BRCA1 gene encodes for the BRCA1 pro-
    tein. Most genes have both “exon” and “intron” se-
    quences. Exons are DNA segments that are necessary for
    the creation of a protein, i.e., that code for a protein.
    Introns are segments of DNA interspersed between the
    exons that, unlike exons, do not code for a protein.
    The creation of a protein from a gene comprises two
    steps: transcription and translation. First, the gene
    sequence is “transcribed” into a different nucleic acid
    13                      ASSOCIATION FOR MOLECULAR   v. PTO
    called ribonucleic acid (“RNA”). RNA has a chemically
    different sugar-phosphate backbone than DNA, and it
    utilizes the nucleotide base uracil (“U”) in place of
    thymine (“T”). During transcription, the DNA double
    helix is unwound and each nucleotide on the non-coding,
    or template, DNA strand is used to make a complemen-
    tary, single-stranded RNA molecule that mirrors the
    coding DNA strand, i.e., adenine on the template DNA
    strand results in uracil in the RNA molecule, thymine
    results in adenine, guanine in cytosine, and cytosine in
    guanine. The resulting “pre-RNA,” like the DNA from
    which it was generated, contains both exon and intron
    sequences. Next, the introns are physically excised from
    the pre-RNA molecule, followed by “splicing” the exons to
    produce a messenger RNA (“mRNA”). Figure 2 below
    shows the steps of transcribing a gene that contains three
    exons (exon 1-3) and two introns (intron 1 and 2) into a
    pre-RNA, followed by RNA excising the introns and
    splicing of the exons to produce an mRNA containing only
    exon sequences.
    Figure 2
    ASSOCIATION FOR MOLECULAR   v. PTO                    14
    Following transcription and splicing, the resulting
    mRNA is “translated” into the encoded protein. Genes,
    and their corresponding mRNAs, encode proteins via
    three-nucleotide combinations called codons. Each codon
    triplet corresponds to one of the twenty amino acids that
    make up all proteins or a “stop” signal that terminates
    protein translation. For example, the codon adenine-
    thymine-guanine (ATG, or AUG in the corresponding
    mRNA), encodes the amino acid methionine. The rela-
    tionship between the sixty-four possible codon sequences
    and their corresponding amino acids is known as the
    genetic code. Figure 3 below represents an mRNA mole-
    cule that translates into a protein of six amino acids
    (Codon 1, AUG, methionine; Codon 2, ACG, threonine;
    Codon 3, GAG, glutamic acid; Codon 4, CUU, leucine;
    Codon 5, CGG, arginine; Codon 6, AGC, serine), and ends
    with one of the three stop codons, UAG.
    Figure 3
    Changes, or mutations, in the sequence of a human
    gene can alter the production, structure, and/or function
    of the resulting protein. Small-scale changes include
    point mutations in which a change to a single nucleotide
    15                       ASSOCIATION FOR MOLECULAR   v. PTO
    alters a single amino acid in the encoded protein. For
    example, a base change in the codon GCU to CCU
    changes an alanine in the encoded protein to a proline.
    Larger scale variations include the deletion, rearrange-
    ment, or duplication of larger DNA segments—ranging
    from several hundreds to over a million nucleotides—and
    can result in the elimination, misplacement, or duplica-
    tion of an entire gene or genes. While some mutations
    have little or no effect on the body’s processes, others
    result in disease or an increased risk of developing a
    particular disease. DNA sequencing is used in clinical
    diagnostic testing to determine whether a gene contains
    mutations associated with a particular disease or disease
    risk.
    Nearly every cell in the human body contains an indi-
    vidual’s entire genome. DNA in the cell, called “native” or
    “genomic” DNA, is packaged into twenty-three pairs of
    chromosomes.      Chromosomes are complex structures
    comprising a single extended DNA molecule wrapped
    around proteins called histones, as shown in Figure 4
    below.
    ASSOCIATION FOR MOLECULAR   v. PTO                     16
    Figure 4
    Each chromosome contiguously spans millions of bases
    and encompasses many discrete genes. Humans have
    twenty-two pairs of autosomal chromosomes, numbered
    one to twenty-two according to size from largest to small-
    est, and one pair of sex chromosomes, two X chromosomes
    in females and one X and one Y chromosome in males.
    Genomic DNA can be extracted from its cellular envi-
    ronment using a number of well-established laboratory
    techniques. A particular segment of DNA, such as a gene,
    can then be excised or amplified from the DNA to obtain
    the isolated DNA segment of interest. DNA molecules
    can also be synthesized in the laboratory. One type of
    synthetic DNA molecule is complementary DNA
    (“cDNA”). cDNA is synthesized from mRNA using com-
    plementary base pairing in a manner analogous to RNA
    17                       ASSOCIATION FOR MOLECULAR   v. PTO
    transcription. The process results in a double-stranded
    DNA molecule with a sequence corresponding to the
    sequence of an mRNA produced by the body. Because it is
    synthesized from mRNA, cDNA contains only the exon
    sequences, and thus none of the intron sequences, from a
    chromosomal gene sequence.
    II.
    Certain mutations in the BRCA genes correlate with
    an increased risk of breast and ovarian cancer. The
    average woman in the United States has around a twelve
    to thirteen percent risk of developing breast cancer in her
    lifetime. Women with BRCA mutations, in contrast, face
    a cumulative risk of between fifty to eighty percent of
    developing breast cancer and a cumulative risk of ovarian
    cancer of between twenty to fifty percent. Diagnostic
    genetic testing for the existence of BRCA mutations is
    therefore an important consideration in the provision of
    clinical care for breast or ovarian cancer. This testing
    provides a patient with information on her risk for heredi-
    tary breast and ovarian cancers, and thus aids in the
    difficult decision regarding whether to undertake preven-
    tive options, including prophylactic surgery. Diagnostic
    results can also be an important factor in structuring an
    appropriate course of cancer treatment, since certain
    forms of therapy are more effective in treating cancers
    related to BRCA mutations.
    The inventors of the patents in suit identified the ge-
    netic basis of BRCA1- and BRCA2-related cancers using
    an analysis called positional cloning. Relying on a large
    set of DNA samples from families with inherited breast
    and ovarian cancers, the inventors correlated the occur-
    rence of cancer in individual family members with the
    inheritance of certain marker DNA sequences. This
    allowed the inventors to identify, or “map,” the physical
    ASSOCIATION FOR MOLECULAR   v. PTO                        18
    location of the BRCA genes within the human genome
    and to isolate the BRCA genes and determine their exact
    nucleotide sequences. This in turn allowed Myriad to
    provide BRCA diagnostic testing services to women. 5
    III.
    Myriad, however, was not the only entity to imple-
    ment clinical BRCA testing services. Starting in 1996,
    the University of Pennsylvania’s Genetic Diagnostic
    Laboratory (“GDL”), co-directed by plaintiffs Haig H.
    Kazazian, Jr., M.D. and Arupa Ganguly, Ph.D., provided
    BRCA1/2 diagnostic services to women. By 1999, how-
    ever, accusations by Myriad that GDL’s BRCA testing
    services infringed its patents forced the lab to stop provid-
    ing such services.
    The first sign of a dispute came in early 1998. At that
    time, Dr. Kazazian recalls a dinner with Dr. Mark Skol-
    nick, inventor and Chief Science Officer at Myriad. At the
    dinner, Skolnick informed Kazazian that Myriad was
    planning to stop GDL from providing clinical BRCA
    testing in light of Myriad’s patents. A month or two later,
    in May 1998, Kazazian received a letter from William A.
    Hockett, Director of Corporate Communications at Myr-
    iad. The letter stated that Myriad knew that Kazazian
    was currently providing BRCA1 diagnostic testing ser-
    vices, and that Myriad, as patent holder of five U.S.
    patents covering the isolated BRCA1 gene and diagnostic
    5   Myriad filed the first patent application leading to
    the patents in suit covering isolated BRCA1 DNA and
    associated diagnostic methods in August 1994. The first
    resulting patent, the ’473 patent, issued on December 2,
    1997. Myriad filed the first application leading to the
    patents in suit covering isolated BRCA2 DNA and associ-
    ated diagnostic methods in December 1995, and the first
    such patent, the ’492 patent, issued on November 17,
    1998.
    19                       ASSOCIATION FOR MOLECULAR    v. PTO
    testing, was making available to select institutions a
    collaborative license. Attached to the letter was a copy of
    Myriad’s collaborative agreement, which proposed se-
    verely limiting GDL’s testing services to certain tests for
    patients of Ashkenazi Jewish descent. Plaintiff Harry
    Ostrer, M.D, a researcher at New York University
    (“NYU”) School of Medicine, received the same letter and
    collaborative agreement in May 1998, although his labo-
    ratory did not, at the time, provide such testing services.
    Rather, Ostrer sent patient samples to GDL for BRCA
    genetic testing.
    Months later, in August 1998, Dr. Kazazian received a
    second letter, this time from George A. Riley of the law
    firm O’Melveny & Myers LLP. The letter identified by
    number five Myriad patents “covering, among other
    things, the BRCA1 gene sequence . . . and methods for
    detecting alterations in the BRCA1 sequence.” J.A. 1145.
    The letter also indicated that it “has come to Myriad’s
    attention that you are engaged in commercial testing
    activities that infringe Myriad’s patents,” and that
    “[u]nless and until a licensing arrangement is completed
    . . . you should cease all infringing testing activity.” Id.
    The letter noted, however, that the cease-and-desist
    notification did not apply to research testing “for the
    purpose of furthering non-commercial research programs,
    the results of which are not provided to the patient and
    for which no money is received from the patient or the
    patient’s insurance.” Id.
    In June 1999, Robert Terrell, the General Counsel for
    the University of Pennsylvania, received a similar cease-
    and-desist letter from Christopher Wight, Myriad’s Gen-
    eral Counsel. The letter stated, “It has come to our atten-
    tion that Dr. Haig H. Kazazian, Jr. of the University of
    Pennsylvania is continuing to willfully engage in commer-
    cial BRCA1 and BRCA2 genetic testing activities, in
    ASSOCIATION FOR MOLECULAR   v. PTO                        20
    violation of the University of Pennsylvania’s previous
    assurances that such commercial testing activities would
    be discontinued.” J.A. 2890. Terrell responded to Wight
    by letter on September 10, 1999, stating that “the Univer-
    sity agrees that it will not accept samples for BRCA1
    research testing from third parties.” J.A. 2891. Kazazian
    thus informed Dr. Ostrer that GDL would no longer be
    accepting patient samples for BRCA testing from him or
    anyone else as a result of the patent infringement asser-
    tions made by Myriad. As a result, Ostrer started send-
    ing patient samples for BRCA genetic testing to Myriad,
    which became (and remains today) the only provider of
    such services in the United States.
    During this period, Myriad also initiated several pat-
    ent infringement suits against entities providing clinical
    BRCA testing. Myriad filed suit against Oncormed Inc. in
    1997 and again in 1998, Myriad Genetics v. Oncormed,
    Nos. 2:97-cv-922, 2:98-cv-35 (D. Utah), and the University
    of Pennsylvania in 1998, Myriad Genetics v. Univ. of Pa.,
    No. 2:98-cv-829 (D. Utah). Both lawsuits were later
    dismissed without prejudice after each defendant agreed
    to discontinue all allegedly infringing activity.
    None of the plaintiffs besides Drs. Kazazian, Ganguly,
    and Ostrer, allege that Myriad directed any letters or
    other communications regarding its patents at them.
    Rather, the other researchers and medical organization
    members state simply that knowledge of Myriad’s vigor-
    ous enforcement of its patent rights against others
    stopped them from engaging in clinical BRCA genetic
    testing, although they have the personnel, expertise, and
    facilities as well as the desire to provide such testing. The
    patient plaintiffs state that they have been unable to
    obtain any BRCA genetic testing or their desired BRCA
    testing, either covered by their insurance or at a price
    21                       ASSOCIATION FOR MOLECULAR   v. PTO
    that they can afford, because of Myriad’s patent protec-
    tion.
    Like the other researchers, Dr. Kazazian states that if
    Myriad’s patents were held invalid, he and Dr. Ganguly
    would be able to resume BRCA testing within a matter of
    a few weeks. He notes, however, that this is only if they
    “decided to resume BRCA testing.” J.A. 2852. Ganguly
    concurs, stating that if the patents were invalidated, “I
    would immediately consider resuming BRCA testing in
    my laboratory.” J.A. 2892. Dr. Ostrer 6 also indicates that
    his lab has all the personnel, facilities, and expertise
    necessary to undertake clinical BRCA testing and em-
    phatically states that his lab “would immediately begin to
    perform BRCA1/2-related genetic testing upon invalida-
    tion of the Myriad patents.” J.A. 2936-38.
    IV.
    After Plaintiffs filed suit, Myriad moved to have the
    case dismissed, alleging that the Plaintiffs lacked stand-
    ing to bring a declaratory judgment suit challenging the
    validity of its patents. The district court disagreed,
    6   On July 27, 2011, two days before we issued our
    initial, now-vacated decision in this case, Myriad notified
    the court that Dr. Ostrer was leaving NYU to assume a
    position at the Albert Einstein College of Medicine and
    Montefiore Medical Center, effective August 29, 2011. In
    response, Plaintiffs submitted a supplemental declaration
    from Dr. Ostrer stating that, in his new position, he still
    seeks to undertake BRCA diagnostic testing, still has the
    resources and expertise to conduct such testing, and
    would immediately do so if Myriad’s patents were invali-
    dated. Following remand from the Supreme Court, we
    have also received from Myriad a related “suggestion of
    mootness” and motion to remand or dismiss. We declined
    the suggestion and denied the motion. We now review
    this case on the facts and arguments briefed and pre-
    sented to us.
    ASSOCIATION FOR MOLECULAR   v. PTO                        22
    however, holding that the Plaintiffs had established
    Article III standing under the “all the circumstances” test
    articulated by the Supreme Court in MedImmune, Inc. v.
    Genentech, Inc., 
    549 U.S. 118
    , 127 (2007). DJ Op., 669 F.
    Supp. 2d at 385-92. The court first found that Myriad had
    engaged in sufficient “affirmative acts” based on the
    company’s assertion of its “right to preclude others from
    engaging in BRCA1/2 genetic testing through personal
    communications, cease-and-desist letters, licensing offers,
    and litigation,” the result of which was “the widespread
    understanding that one may engage in BRCA1/2 testing
    at the risk of being sued for infringement liability by
    Myriad.” Id. at 390. Myriad’s actions, the court con-
    cluded, had placed “the Plaintiffs in precisely the situa-
    tion that the Declaratory Judgment Act was designed to
    address: the Plaintiffs have the ability and desire to
    engage in BRCA1/2 testing as well as the belief that such
    testing is within their rights, but cannot do so without
    risking infringement liability.” Id.
    In so holding, the court rejected Myriad’s argument
    that there must be some act directed toward the Plain-
    tiffs, noting that Myriad had, in fact, taken affirmative
    acts toward plaintiffs Dr. Kazazian and Dr. Ganguly. Id.
    at 387-88. The court also rejected Myriad’s arguments
    that the cease-and-desist letter sent to plaintiff Kazazian
    was too old to support declaratory judgment jurisdiction
    and that the legal actions brought against third parties
    could not be considered in the jurisdictional analysis. Id.
    at 388-89. The court concluded that rigid adherence to
    either of these requirements would be inconsistent with
    MedImmune’s mandate that the court assess the facts
    alleged under all the circumstances. Id.
    The district court also found that the Plaintiffs had al-
    leged sufficient meaningful preparations for infringement
    to establish declaratory judgment jurisdiction. Id. at 390-
    23                       ASSOCIATION FOR MOLECULAR   v. PTO
    92. With respect to the researchers, the court held it was
    sufficient that they were all “ready, willing, and able” to
    begin BRCA1/2 testing within the normal course of their
    laboratories’ research, rejecting Myriad’s argument that
    they needed to allege specific preparatory activities. Id.
    at 390-91. The court also rejected Myriad’s argument
    that plaintiffs Kazazian and Ganguly testified only that
    they would “consider” engaging in allegedly infringing
    activities, concluding that the proper focus of the inquiry
    is whether they are meaningfully prepared, not whether
    they have made a final, conclusive decision to engage in
    such activities. Id. at 391 n.18.
    The parties then moved for summary judgment on the
    merits of Plaintiffs’ § 101 challenge to Myriad’s patent
    claims. The district court held for Plaintiffs, concluding
    that the fifteen challenged claims were drawn to non-
    patentable subject matter and thus invalid under § 101.
    SJ Op., 
    702 F. Supp. 2d
     at 220-37. Regarding the compo-
    sition claims, the court held that isolated DNA molecules
    fall within the judicially created “products of nature”
    exception to § 101 because such isolated DNAs are not
    “markedly different” from native DNAs. Id. at 222, 232
    (quoting Diamond v. Chakrabarty, 
    447 U.S. 303
     (1980)).
    The court relied on the fact that, unlike other biological
    molecules, DNAs are the “physical embodiment of infor-
    mation,” and that this information is not only preserved
    in the claimed isolated DNA molecules, but also essential
    to their utility as molecular tools. Id. at 228-32.
    Turning to the method claims, the court held them
    patent ineligible under this court’s then-definitive ma-
    chine-or-transformation test. Id. at 233 (citing In re
    Bilski, 
    545 F.3d 943
     (Fed. Cir. 2008) (en banc), aff’d on
    other grounds, Bilski v. Kappos, 
    130 S. Ct. 3218
    , 3225
    (2010)). The court held that the claims covered “analyz-
    ing” or “comparing” DNA sequences by any method, and
    ASSOCIATION FOR MOLECULAR   v. PTO                        24
    thus covered mental processes independent of any physi-
    cal transformations. Id. at 233-35. In so holding, the
    court distinguished Myriad’s claims from those at issue in
    Mayo based on the “determining” step in the latter being
    construed to include the extraction and measurement of
    metabolite levels from a patient sample. SJ Op., 702 F.
    Supp. 2d at 234-35 (citing Prometheus Labs., Inc. v. Mayo
    Collaborative Servs., 
    628 F.3d 1347
    , 1350 (Fed. Cir. 2010),
    rev’d, 
    132 S. Ct. 1289
     (2012)). Alternatively, the court
    continued, even if the claims could be read to include the
    transformations associated with isolating and sequencing
    human DNA, these transformations would constitute no
    more than preparatory data-gathering steps. Id. at 236
    (citing In re Grams, 
    888 F.2d 835
    , 840 (Fed. Cir. 1989)).
    Finally, the court held that the one method claim to
    “comparing” the growth rate of cells claimed a basic
    scientific principle and that the transformative steps
    amounted to only preparatory data gathering. Id. at 237.
    Myriad appealed. We have jurisdiction pursuant to
    28 U.S.C. § 1295(a)(1).
    DISCUSSION
    I.   Declaratory Judgment Jurisdiction
    A.
    The first question we must address is whether the
    district court correctly exercised declaratory judgment
    jurisdiction over this suit. The Declaratory Judgment Act
    provides that, “In a case of actual controversy within its
    jurisdiction . . . any court of the United States . . . may
    declare the rights and other legal relations of any inter-
    ested party seeking such declaration, whether or not
    further relief is or could be sought.” 28 U.S.C. § 2201(a).
    The phrase “a case of actual controversy” in the Act refers
    to the types of “cases” and “controversies” that are justici-
    25                         ASSOCIATION FOR MOLECULAR     v. PTO
    able under Article III of the U.S. Constitution. Aetna Life
    Ins. v. Haworth, 
    300 U.S. 227
    , 239-40 (1937).
    Although no bright-line rule exists for determining
    whether a declaratory judgment action satisfies Article
    III’s case-or-controversy requirement, the Supreme Court
    has held that the dispute must be “definite and concrete,
    touching the legal relations of parties having adverse
    legal interests,” “real and substantial,” and “admi[t] of
    specific relief through a decree of a conclusive character,
    as distinguished from an opinion advising what the law
    would be upon a hypothetical state of facts.” MedIm-
    mune, 549 U.S. at 127 (quoting Aetna Life, 300 U.S. at
    240-41). “Basically, the question in each case is whether
    the facts alleged, under all the circumstances, show that
    there is a substantial controversy, between parties having
    adverse legal interests, of sufficient immediacy and
    reality to warrant the issuance of a declaratory judg-
    ment.” Id. (quoting Md. Cas. Co. v. Pac. Coal & Oil Co.,
    
    312 U.S. 270
    , 273 (1941)).
    In applying MedImmune’s all-the-circumstances test
    to a declaratory judgment action, we are guided by the
    Supreme Court’s three-part framework for determining
    whether an action presents a justiciable Article III con-
    troversy: standing, ripeness, and mootness. See Caraco
    Pharm. Labs., Ltd. v. Forest Labs., Inc., 
    527 F.3d 1278
    ,
    1291 (Fed. Cir. 2008). In this case, the parties have
    framed the jurisdictional issue as one of standing. See
    MedImmune, 549 U.S. at 128 n.8. (“The justiciability
    problem that arises, when the party seeking declaratory
    relief is himself preventing the complained-of injury from
    occurring, can be described in terms of standing . . . or . . .
    ripeness.” (internal citations omitted)).
    “[T]he irreducible constitutional minimum of standing
    contains three elements.” Lujan v. Defenders of Wildlife,
    ASSOCIATION FOR MOLECULAR   v. PTO                        26
    
    504 U.S. 555
    , 560 (1992). “First, the plaintiff must have
    suffered an injury in fact—an invasion of a legally pro-
    tected interest which is (a) concrete and particularized,
    and (b) actual or imminent, not conjectural or hypotheti-
    cal.” Id. (internal citations and quotations omitted).
    “Second, there must be a causal connection between the
    injury and the conduct complained of–the injury has to be
    ‘fairly . . . trace[able] to the challenged action of the
    defendant . . . .’” Id. (quoting Simon v. E. Ky. Welfare
    Rights Org., 
    426 U.S. 26
    , 41-42 (1976)). “Third, it must be
    ‘likely,’ as opposed to merely ‘speculative,’ that the injury
    will be ‘redressed by a favorable decision.’” Id. at 561
    (quoting Simon, 426 U.S. at 38, 43).
    “Whether an actual case or controversy exists so that
    a district court may entertain an action for a declaratory
    judgment of non-infringement and/or invalidity is gov-
    erned by Federal Circuit law.” MedImmune, Inc. v. Cen-
    tocor, Inc., 
    409 F.3d 1376
    , 1378 (Fed. Cir. 2005), overruled
    on other grounds, MedImmune, 549 U.S. at 130-31.
    Following MedImmune, this court has held that, to estab-
    lish an injury in fact traceable to the patentee, a declara-
    tory judgment plaintiff must allege both (1) an affirmative
    act by the patentee related to the enforcement of his
    patent rights, SanDisk Corp. v. STMicroelecs., Inc., 
    480 F.3d 1372
    , 1380-81 (Fed. Cir. 2007), and (2) meaningful
    preparation to conduct potentially infringing activity, Cat
    Tech LLC v. TubeMaster, Inc., 
    528 F.3d 871
    , 880 (Fed.
    Cir. 2008). We review the exercise of declaratory judg-
    ment jurisdiction in light of a particular set of facts de
    novo. SanDisk Corp., 480 F.3d at 1377.
    B.
    Myriad challenges the district court’s jurisdictional
    decision on the grounds that Myriad and the Plaintiffs do
    not have adverse legal interests and that Plaintiffs have
    27                       ASSOCIATION FOR MOLECULAR    v. PTO
    failed to allege a controversy of sufficient immediacy and
    reality to warrant the issuance of a declaratory judgment.
    Specifically, Myriad argues that Plaintiffs have failed to
    allege any “affirmative acts” by Myriad within the past
    ten years relating to the patents in suit or directed at any
    Plaintiff. According to Myriad, the district court erred by
    relying on “stale communications” directed at Drs. Ka-
    zazian, Ganguly, and Ostrer over a decade ago, as well as
    ten-year-old licensing and litigation activities directed at
    third parties, and thus exercised jurisdiction based solely
    on Plaintiffs’ subjective fear of suit, arising from rumor
    and innuendo in the research community.
    Plaintiffs respond that they have standing under
    MedImmune’s all-the-circumstances test because, not only
    are they undisputedly prepared to immediately undertake
    potentially infringing activities, but also Myriad took
    sufficient affirmative acts with respect to the patents in
    suit. Regarding the latter, Plaintiffs assert that Myriad
    sued, threatened to sue, or demanded license agreements
    from every known institution offering BRCA clinical
    testing, including university labs directed by plaintiffs
    Kazazian, Ganguly, and Ostrer, forcing each to cease such
    testing. And, according to Plaintiffs, the awareness of
    Myriad’s vigorous assertion of its patent rights still con-
    tinues to suppress their ability to perform clinical BRCA
    testing, placing Plaintiffs in the very dilemma the De-
    claratory Judgment Act was intended to address: they
    must either proceed with BRCA-related activities and risk
    liability for patent infringement, or refrain from such
    activities despite believing Myriad’s patents are invalid.
    Under the facts alleged in this case, we conclude that
    one Plaintiff, Dr. Ostrer, has established standing to
    maintain this declaratory judgment suit. All Plaintiffs
    claim standing under the Declaratory Judgment Act
    based on the same alleged injury: that they cannot un-
    ASSOCIATION FOR MOLECULAR   v. PTO                      28
    dertake the BRCA-related activities that they desire
    because of Myriad’s enforcement of its patent rights
    covering BRCA1/2. 7      Only three plaintiffs, however,
    allege an injury traceable to Myriad; only Drs. Kazazian,
    Ganguly, and Ostrer allege affirmative patent enforce-
    ment actions directed at them by Myriad. Of these three,
    Dr. Ostrer clearly alleges a sufficiently real and imminent
    injury because he alleges an intention to actually and
    immediately engage in allegedly infringing BRCA-related
    activities. We address each in turn.
    Although MedImmune relaxed this court’s more re-
    strictive “reasonable apprehension of suit” test for de-
    claratory judgment jurisdiction, SanDisk, 480 F.3d at
    1380, it did not alter “the bedrock rule that a case or
    controversy must be based on a real and immediate injury
    or threat of future injury that is caused by the defen-
    dants,” Prasco, LLC v. Medicis Pharm. Corp., 
    537 F.3d 1329
    , 1339 (Fed. Cir. 2008).       Accordingly, following
    MedImmune, this court has continued to hold that de-
    claratory judgment jurisdiction will not arise merely on
    the basis that a party learns of the existence of an ad-
    versely held patent, or even perceives that such a patent
    poses a risk of infringement, in the absence of some
    affirmative act by the patentee. SanDisk, 480 F.3d at
    1380-81. Thus, without defining the outer boundaries of
    declaratory judgment jurisdiction, we have held that
    7    Certain patients also allege an injury based on
    their inability to gain access to affordable BRCA genetic
    testing because of Myriad’s patent dominance of such
    services. While denial of health services can, in certain
    circumstances, state a judicially cognizable injury, see
    Simon, 426 U.S. at 40-41, Plaintiffs have not pressed this
    as an independent ground for standing. Moreover, we fail
    to see how the inability to afford a patented invention
    could establish an invasion of a legally protected interest
    for purposes of standing.
    29                         ASSOCIATION FOR MOLECULAR     v. PTO
    “where a patentee asserts rights under a patent based on
    certain identified ongoing or planned activity of another
    party, and where that party contends that it has the right
    to engage in the accused activity without license, an
    Article III case or controversy will arise . . . .” Id. at 1381;
    see also Prasco, 537 F.3d at 1338 (“A patentee can cause
    . . . an injury [sufficient to create an actual controversy] in
    a variety of ways, for example, by creating a reasonable
    apprehension of an infringement suit, [or] demanding the
    right to royalty payments.” (internal citations omitted)).
    In this case, Myriad demanded a royalty under its
    patents from Dr. Ostrer based on his clinical BRCA-
    related activities. In May 1998, Myriad’s Director of
    Corporate Communications sent Ostrer a letter proposing
    a collaborative license. The letter stated that Myriad was
    aware that Ostrer was either currently providing, or was
    interested in initiating, BRCA1 diagnostic testing services
    and that Myriad, as holder of U.S. patents covering the
    BRCA1 gene and diagnostic testing of BRCA1, was mak-
    ing available to his institution, NYU Medical Center, a
    limited collaborative license. The collaborative license
    required NYU to make a payment to Myriad for each non-
    research BRCA test performed.
    At the same time, as Ostrer was aware, Myriad was
    asserting its patent rights against other similarly situated
    parties, a fact to be considered in assessing the existence
    of an actual controversy under the totality of circum-
    stances. See Micron Tech., Inc. v. Mosaid Techs., Inc., 
    518 F.3d 897
    , 901 (Fed. Cir. 2008). Soon after Ostrer received
    Myriad’s letter, Dr. Kazazian informed him that, because
    of Myriad’s assertion of its patent rights against him,
    GDL would no longer be accepting patient samples for
    BRCA genetic testing. Myriad’s assertion of its patent
    rights against Kazazian escalated into a patent infringe-
    ment suit by Myriad against the University of Pennsyl-
    ASSOCIATION FOR MOLECULAR   v. PTO                       30
    vania, which was later dismissed without prejudice after
    the University agreed to cease all accused BRCA testing
    services. Myriad also sued Oncormed for patent in-
    fringement based on its BRCA genetic testing services.
    As a result of Myriad’s patent enforcement actions, Dr.
    Ostrer was forced to send all patient samples to Myriad,
    now the sole provider of BRCA diagnostic testing services.
    Dr. Ostrer, on the other hand, maintains that he could
    have proceeded with his BRCA-related clinical activities
    without taking a license from Myriad. This assertion is
    based on his belief that the patents Myriad claims cover
    such activities are invalid because genes are patent-
    ineligible products of nature. Acting on his belief, Ostrer
    seeks in this lawsuit a declaration of his right to under-
    take BRCA-related clinical activities without a license.
    Accordingly, Myriad and Dr. Ostrer have taken adverse
    legal positions regarding whether or not Ostrer can en-
    gage in BRCA genetic testing without infringing any valid
    claim to “isolated” BRCA DNAs or methods of “analyzing”
    or “comparing” BRCA sequences, as recited in Myriad’s
    patents. See Aetna Life, 300 U.S. at 242 (holding declara-
    tory judgment jurisdiction existed when “the parties had
    taken adverse positions with respect to their existing
    obligations” on an insurance contract).
    Dr. Ostrer has also alleged a controversy of sufficient
    reality and immediacy, MedImmune, 549 U.S. at 127; he
    has alleged a concrete and actual injury traceable to
    Myriad’s assertion of its patent rights, see Lujan, 504 U.S.
    at 560. First, Ostrer seeks to undertake specific BRCA-
    related activities—BRCA diagnostic testing—for which
    Myriad has demanded a license under specific patents—
    those that cover the isolated BRCA genes and BRCA
    diagnostic testing. Thus, Ostrer does not request “an
    opinion advising what the law would be upon a hypotheti-
    cal state of facts,” Aetna Life, 300 U.S. at 241, but rather
    31                       ASSOCIATION FOR MOLECULAR    v. PTO
    whether his proposed BRCA testing services are covered
    by valid patent claims to “isolated” BRCA genes and
    methods of “comparing” the genes’ sequences. Second,
    Ostrer not only has the resources and expertise to imme-
    diately undertake clinical BRCA testing, but also states
    unequivocally that he will immediately begin such test-
    ing. In contrast to Ostrer, who alleges an actual and
    imminent injury for purposes of standing, Drs. Kazazian
    and Ganguly allege only that they will “consider” resum-
    ing BRCA testing. These “‘some day’ intentions” are
    insufficient to support an “actual or imminent” injury for
    standing “without . . . any specification of when the some
    day will be.” Lujan, 504 U.S. at 564. As a result, Drs.
    Kazazian and Ganguly do not have standing.
    Myriad seeks to avoid this result based on the timing
    of its enforcement actions. Specifically, Myriad argues
    that time has extinguished the immediacy and reality of
    any controversy, relying on language that hearkens back
    to our pre-MedImmune reasonable apprehension of suit
    test. See, e.g., Appellants’ Br., 
    2010 WL 4600106
    , at 26
    (“[A] patentee’s ten-year silence presumptively extin-
    guishes any reasonable objective fear of suit.”). We dis-
    agree. In many cases a controversy made manifest by a
    patentee’s affirmative assertion of its patent rights will
    dissipate as market players and products change. In this
    case, however, the relevant circumstances surrounding
    Myriad’s assertion of its patent rights have not changed
    despite the passage of time. 8
    8   Myriad’s analogy to laches is also unconvincing.
    Laches bars the recovery of pre-filing damages; it does not
    preclude a patent action for prospective relief, the type of
    relief sought here. See A.C. Aukerman Co. v. R.L. Chaides
    Const. Co., 
    960 F.2d 1020
    , 1041 (Fed. Cir. 1992) (en banc)
    (“[L]aches bars relief on a patentee’s claim only with
    respect to damages accrued prior to suit.”).
    ASSOCIATION FOR MOLECULAR   v. PTO                      32
    Myriad’s active enforcement of its patent rights forced
    Dr. Ostrer, as well as every other similarly situated
    researcher and institution, to cease performing the chal-
    lenged BRCA testing services, leaving Myriad as the sole
    provider of BRCA clinical testing to patients in the United
    States. Since that time, neither the accused activities nor
    the parties’ positions have changed. First, Myriad does
    not allege that genetic testing technology has changed in
    any way that renders its past assertions of its patent
    rights irrelevant to Ostrer’s currently proposed BRCA
    testing. Rather, the patents cover, as Myriad asserted in
    the late 1990s, the basic components of any such test: the
    isolated BRCA genes and the diagnostic step of comparing
    the genes’ sequences.
    Second, ever since Myriad’s enforcement efforts elimi-
    nated all competition, Myriad and Ostrer have not altered
    their respective positions. Ostrer, still laboring under
    Myriad’s threat of infringement liability, has not at-
    tempted to provide BRCA testing; yet, as a researcher, he
    remains in the same position with respect to his ability
    and his desire to provide BRCA testing as in the late
    1990s. Furthermore, nothing in the record suggests that
    any researcher or institution has successfully attempted
    to compete with Myriad, or that Myriad has in any way
    changed its position with regard to its patent rights. Just
    as active enforcement of one’s patent rights against others
    can maintain a real and immediate controversy despite
    the passage of time, see Micron, 518 F.3d at 901, so too
    can the successful assertion of such rights when the
    relevant circumstances remain unchanged. Thus, consis-
    tent with the purpose of the Declaratory Judgment Act,
    Ostrer need not risk liability and treble damages for
    patent infringement before seeking a declaration of his
    contested legal rights. See MedImmune, 549 U.S. at 134.
    33                        ASSOCIATION FOR MOLECULAR    v. PTO
    Myriad also argues that the record refutes Ostrer’s
    claim that he has been restrained from engaging in
    BRCA-related gene sequencing.         Specifically, Myriad
    argues that since Myriad published its discoveries of the
    BRCA1 and BRCA2 genes in October 1994 and March
    1996, respectively, over 18,000 scientists have conducted
    research on the BRCA genes and over 8,600 research
    papers have been published. Furthermore, according to
    Myriad, plaintiff Wendy Chung concedes that her lab
    currently conducts sequencing of BRCA genes. Yet, both
    Drs. Chung and Ostrer state that, although they conduct
    gene sequencing, they are forbidden from informing their
    research subjects of the results of their BRCA tests with-
    out first sending the samples to Myriad. Accordingly,
    Ostrer is restrained from the BRCA-related activity that
    he desires to undertake: clinical diagnostic testing.
    Myriad’s communications with Dr. Ostrer confirm this
    understanding. The licensing letter Myriad sent to Ostrer
    proposed a collaborative agreement giving NYU the right
    to perform “Research Tests” without payment to Myriad.
    J.A. 2967. “Research Tests” are defined as tests that
    further “non-commercial research programs, the results of
    which are not provided to the patient and for which no
    money is received.” J.A. 2965 (emphasis added). In
    contrast, the agreement requires payment to Myriad for
    each “Testing Service” performed, with “Testing Services”
    defined as “medical laboratory testing . . . for the presence
    or absence of BRCA1 mutations for the purpose of deter-
    mining or predicting predisposition to, or assessing the
    risk of breast or ovarian cancer in humans.” J.A. 2966-67.
    Thus, Myriad’s patent enforcement actions never targeted
    the non-clinical BRCA research now cited by Myriad, and
    Ostrer’s ability to perform such research does not address
    the injury asserted here.
    ASSOCIATION FOR MOLECULAR   v. PTO                       34
    Finally, Myriad argued in its reply brief and at oral
    argument that Plaintiffs’ declaratory action will not afford
    them the relief they want, a requirement for standing.
    Lujan, 504 U.S. at 560-61; see also MedImmune, 549 U.S.
    at 127 n.7 (“[A] litigant may not use a declaratory-
    judgment action to obtain piecemeal adjudication of
    defenses that would not finally and conclusively resolve
    the underlying controversy.”). Specifically, Myriad as-
    serts that because Plaintiffs have challenged just fifteen
    composition and method claims, while admitting that
    other unchallenged claims to BRCA probes and primers
    will still prevent them from engaging in BRCA sequenc-
    ing, a favorable decision will not redress the Plaintiffs’
    alleged injury. Again, we disagree.
    The Supreme Court has required only that it is
    “likely,” rather than “merely ‘speculative,’” that the al-
    leged injury will be “redressed by a favorable decision.”
    Lujan, 504 U.S. at 561. The Court has not required
    certainty. For example, in Village of Arlington Heights v.
    Metropolitan Housing Development Corp., the Court held
    that the plaintiffs had standing to challenge a suburb’s
    exclusionary zoning ordinance, as the ordinance stood as
    “an absolute barrier” to the housing development Metro-
    politan Housing Development Corp. (“MHDC”) had con-
    tracted to provide in the village. 
    429 U.S. 252
    , 261 (1977).
    The Court noted that injunctive relief, while removing the
    “barrier” of the ordinance, would not “guarantee” that the
    housing would be built since MHDC still had to secure
    financing, qualify for federal subsidies, and carry through
    with construction. Id. The Court nevertheless recognized
    that “all housing developments are subject to some extent
    to similar uncertainties,” and concluded that it was suffi-
    cient that there was a “substantial probability” that the
    housing development would be built. Id. at 261, 264.
    35                        ASSOCIATION FOR MOLECULAR    v. PTO
    In this case, Myriad’s challenged composition and
    method claims undisputedly provide “an absolute barrier”
    to Dr. Ostrer’s ability to undertake BRCA diagnostic
    testing activities, and a declaration of those claims’ inva-
    lidity would remove that barrier. See id. at 261. More-
    over, while there may be other patent claims directed to
    BRCA probes and primers that prevent Ostrer from
    performing BRCA diagnostic testing free of infringement
    liability, Myriad has failed to direct us to any specific
    unchallenged claim that will have that effect. And Plain-
    tiffs’ counsel stated at the first oral argument in this case
    that his clients can sequence the BRCA genes without
    using BRCA probes and primers. Oral Arg. at 34:07-25,
    34:53-35:29 available at http://www.cafc.uscourts.gov/
    oral-argument-recordings/2010-1406/all. Accordingly, we
    decline to construe the asserted claims and decline to hold
    on this record that Dr. Ostrer’s proposed BRCA-related
    activities would infringe unchallenged claims to primers
    and probes. We thus conclude that it is likely, not merely
    speculative, that Dr. Ostrer’s injury will be redressed by a
    favorable decision.
    Although we affirm the district court’s decision to ex-
    ercise declaratory judgment jurisdiction over this case, we
    do so on narrower grounds. The district court failed to
    limit its jurisdictional holding to affirmative acts by the
    patentee directed at specific Plaintiffs, see SanDisk, 480
    F.3d at 1380-81, erroneously holding all the Plaintiffs had
    standing based on “the widespread understanding that
    one may engage in BRCA1/2 testing at the risk of being
    sued for infringement liability by Myriad,” DJ Op., 669 F.
    Supp. 2d at 390. We disagree, and thus we reverse the
    district court’s holding that the various plaintiffs other
    than Dr. Ostrer have standing to maintain this declara-
    tory judgment action. Simply disagreeing with the exis-
    tence of a patent on isolated DNA sequences or even
    ASSOCIATION FOR MOLECULAR   v. PTO                       36
    suffering an attenuated, non-proximate, effect from the
    existence of a patent does not meet the Supreme Court’s
    requirement for an adverse legal controversy of sufficient
    immediacy and reality to warrant the issuance of a de-
    claratory judgment. See MedImmune, 549 U.S. at 127.
    The various organizational plaintiffs in this suit in par-
    ticular were not the target of any enforcement action or
    offered license agreements by Myriad and had made no
    preparation to undertake potentially infringing activities.
    They accordingly suffered no injury and thus lack stand-
    ing to bring this action. See Prasco, 537 F.3d at 1338-42;
    Cat Tech, 528 F.3d at 880-81.
    Having found one plaintiff with standing to maintain
    this declaratory judgment action, see Horne v. Flores, 
    129 S. Ct. 2579
    , 2592-93 (2009), we may turn now to the
    merits of Myriad’s appeal of the district court’s summary
    judgment decision, which held all fifteen challenged
    composition and method claims invalid under § 101.
    II. Subject Matter Eligibility
    Under the Patent Act, “Whoever invents or discovers
    any new and useful process, machine, manufacture, or
    composition of matter, or any new and useful improve-
    ment thereof, may obtain a patent therefor, subject to the
    conditions and requirements of this title.” 35 U.S.C.
    § 101. The Supreme Court has consistently construed
    § 101 broadly, explaining that “[i]n choosing such expan-
    sive terms . . . modified by the comprehensive ‘any,’ Con-
    gress plainly contemplated that the patent laws would be
    given wide scope.” Bilski v. Kappos, 
    130 S. Ct. 3218
    , 3225
    (2010) (quoting Chakrabarty, 447 U.S. at 308).
    The Supreme Court, however, has also consistently
    held that § 101, although broad, is not unlimited. Id. The
    Court’s precedents provide three judicially created excep-
    tions to § 101’s broad patent-eligibility principles: “‘Laws
    37                         ASSOCIATION FOR MOLECULAR     v. PTO
    of nature, natural phenomena, and abstract ideas’ are not
    patentable.” Mayo, 132 S. Ct. at 1293 (quoting Diamond
    v. Diehr, 
    450 U.S. 175
    , 185 (1981)). The Court has also
    referred to those exceptions as precluding the patenting of
    mental processes, Gottschalk v. Benson, 
    409 U.S. 63
    , 67
    (1972), and products of nature, Chakrabarty, 447 U.S. at
    313 (“[T]he relevant distinction for purposes of § 101 is . . .
    between products of nature . . . and human-made inven-
    tions.”). The Court has explained that, although not
    required by the statutory text, “[t]he concepts covered by
    these exceptions are ‘part of the storehouse of knowledge
    of all men . . . free to all men and reserved exclusively to
    none.’” Bilski, 130 S. Ct. at 3225 (quoting Funk Bros.
    Seed Co. v. Kalo Inoculant Co., 
    333 U.S. 127
    , 130 (1948)).
    Plaintiffs challenge under § 101 Myriad’s composition
    claims directed to “isolated” DNA molecules, its method
    claims directed to “analyzing” or “comparing” DNA se-
    quences, and its claim to a method for screening potential
    cancer therapeutics. We address each in turn. Before
    reviewing the applicability of the Supreme Court’s Mayo
    holding to the claims of the Myriad patents, however, it is
    important to state what this appeal is not about. It is not
    about whether individuals suspected of having an in-
    creased risk of developing breast cancer are entitled to a
    second opinion. Nor is it about whether the University of
    Utah, the owner of the instant patents, or Myriad, the
    exclusive licensee, has acted improperly in its licensing or
    enforcement policies with respect to the patents. The
    question is also not whether is it desirable for one com-
    pany to hold a patent or license covering a test that may
    save people’s lives, or for other companies to be excluded
    from the market encompassed by such a patent—that is
    the basic right provided by a patent, i.e., to exclude others
    from practicing the patented subject matter. It is also not
    whether the claims at issue are novel or nonobvious or too
    ASSOCIATION FOR MOLECULAR   v. PTO                      38
    broad. Those questions are not before us. It is solely
    whether the claims to isolated BRCA DNA, to methods for
    comparing DNA sequences, and to a process for screening
    potential cancer therapeutics meet the threshold test for
    patent-eligible subject matter under 35 U.S.C. § 101 in
    light of various Supreme Court holdings, particularly
    including Mayo. The issue is patent eligibility, not pat-
    entability.
    We would further note, in the context of discussing
    what this case is not about, that patents on life-saving
    material and processes, involving large amounts of risky
    investment, would seem to be precisely the types of sub-
    ject matter that should be subject to the incentives of
    exclusive rights. But disapproving of patents on medical
    methods and novel biological molecules are policy ques-
    tions best left to Congress, and other general questions
    relating to patentability and use of patents are issues not
    before us. As will be seen, on the limited questions before
    us, we conclude that the composition claims and the
    screening claim involving growing a transformed host cell
    meet the standards for patent eligibility, while the
    claimed methods for “analyzing” or “comparing” do not.
    A. Composition Claims: Isolated DNA Molecules
    i.
    The principal claims of the patents before us on re-
    mand relate to isolated DNA molecules. Mayo does not
    control the question of patent-eligibility of such claims.
    They are claims to compositions of matter, expressly
    authorized as suitable patent-eligible subject matter in
    § 101. As to those claims, the issue of patent-eligibility
    remains, as it was on the first appeal to this court,
    whether they claim patent-ineligible products of nature.
    We hold that they do not. The isolated DNA molecules
    before us are not found in nature. They are obtained in
    39                      ASSOCIATION FOR MOLECULAR   v. PTO
    the laboratory and are man-made, the product of human
    ingenuity. While they are prepared from products of
    nature, so is every other composition of matter. All new
    chemical or biological molecules, whether made by syn-
    thesis or decomposition, are made from natural materials.
    For example, virtually every medicine utilized by today’s
    medical practitioners, and every manufactured plastic
    product, is either synthesized from natural materials
    (most often petroleum fractions) or derived from natural
    plant materials. But, as such, they are different from
    natural materials, even if they are ultimately derived
    from them. The same is true of isolated DNA molecules.
    ii.
    Myriad argues that its challenged composition claims
    to “isolated” DNAs cover patent-eligible compositions of
    matter within the meaning of § 101. According to Myriad,
    the district court came to a contrary conclusion by (1)
    misreading Supreme Court precedent as excluding from
    patent eligibility all “products of nature” unless “mark-
    edly different” from naturally occurring ones; and (2)
    incorrectly focusing not on the differences between iso-
    lated and native DNAs, but on one similarity: their infor-
    mational content. Rather, Myriad argues, an isolated
    DNA molecule is patent eligible because it is, as claimed,
    “a nonnaturally occurring manufacture or composition of
    matter” with “a distinctive name, character, and use.”
    Appellants’ Br., 
    2010 WL 4600106
    , at 41-42 (quoting
    Chakrabarty, 447 U.S. at 309-10). Myriad contends that
    isolated DNA does not exist in nature and that isolated
    DNAs, unlike native DNAs, can be used as primers and
    probes for diagnosing cancer. Moreover, Myriad asserts
    that an ultimately-derived-from “products of nature”
    exception not only would be unworkable, as every compo-
    sition of matter is, at some level, composed of natural
    materials, but also would be contrary to this court’s
    ASSOCIATION FOR MOLECULAR   v. PTO                        40
    precedents, the PTO’s 2001 Utility Examination Guide-
    lines, and Congress’s role in enacting the patent laws.
    Regarding Mayo, Myriad argues that the Supreme Court’s
    decision did not address or alter the established patent-
    eligibility test for composition claims, such that the stan-
    dards announced in Chakrabarty still govern this appeal.
    To the extent that the general principles discussed in
    Mayo bear on the DNA claims, Myriad maintains that
    isolated DNA represents a nonnatural, man-made inven-
    tion distinct from the lack of human ingenuity underlying
    the method claims there at issue.
    Plaintiffs respond that claims to isolated DNA mole-
    cules fail to satisfy § 101 because such claims cover natu-
    ral phenomena and products of nature. According to
    Plaintiffs, Supreme Court precedent establishes that a
    product of nature is not patent eligible even if, as claimed,
    it has undergone some highly useful change from its
    natural form. Rather, Plaintiffs assert, to be patent
    eligible a composition of matter must also have a distinc-
    tive name, character, and use, making it “markedly
    different” from the natural product. In this case, Plain-
    tiffs conclude that because isolated DNAs retain part of
    the same nucleotide sequence as native DNAs, they do not
    have any “markedly different” characteristics. Further-
    more, according to Plaintiffs, the isolated DNA claims
    preempt products and laws of nature, excluding anyone
    from working with the BRCA genes and the genetic
    information they convey. Under Mayo, Plaintiffs assert
    that any structural differences relative to the chromoso-
    mal BRCA genes do not add “enough” to the underlying
    natural genetic sequences to render Myriad’s isolated
    DNA molecules patentable under § 101.
    The government as amicus curiae does not defend the
    longstanding position of the PTO, a government agency,
    that isolated DNA molecules are patent eligible, arguing
    41                       ASSOCIATION FOR MOLECULAR   v. PTO
    instead for a middle ground. Specifically, the government
    argues that DNA molecules engineered by man, including
    cDNAs, 9 are patent-eligible compositions of matter be-
    cause, with rare exceptions, they do not occur in nature,
    either in isolation or as contiguous sequences within a
    chromosome. In contrast, the government asserts, iso-
    lated and unmodified genomic DNAs are not patent
    eligible, but rather patent-ineligible products of nature,
    since their nucleotide sequences exist because of evolu-
    tion, not man.
    At the first oral argument, the government illustrated
    its position by way of a so-called “magic microscope” test
    (an invention in and of itself, although probably not
    patent-eligible). Oral Arg. at 46:50-47:50. According to
    the government’s test then, if an imaginary microscope
    could focus in on the claimed DNA molecule as it exists in
    the human body, the claim covers ineligible subject mat-
    ter. The government thus argued that because such a
    microscope could focus in on the claimed isolated BRCA1
    or BRCA2 sequences as they exist in the human body, the
    claims covering those sequences are not patent eligible.
    In contrast, the government contended, because an
    imaginary microscope could not focus in vivo on a cDNA
    sequence, which is engineered by man to splice together
    non-contiguous coding sequences (i.e., exons), claims
    covering cDNAs are patent eligible.
    In sum, although the parties and the government ap-
    pear to agree that isolated DNAs are compositions of
    matter, they disagree on whether and to what degree such
    molecules fall within the exception for products of nature.
    9   According to the government, several of the com-
    position claims at issue in this suit, including claim 2 of
    the ’282 patent, are limited to cDNA and thus patent
    eligible. We agree.
    ASSOCIATION FOR MOLECULAR   v. PTO                      42
    As set forth below, we conclude that the challenged claims
    to isolated DNAs, whether limited to cDNAs or not, are
    directed to patent-eligible subject matter under § 101.
    iii.
    While Mayo and earlier decisions concerning method
    claim patentability provide valuable insights and illumi-
    nate broad, foundational principles, the Supreme Court’s
    decisions in Chakrabarty and Funk Brothers set out the
    primary framework for deciding the patent eligibility of
    compositions of matter, including isolated DNA mole-
    cules. 10
    In Chakrabarty, the Court addressed the question
    whether a man-made, living microorganism is a patent-
    10   Other Supreme Court decisions cited by the par-
    ties and amici relating to patented manufactures and
    compositions of matter were decided based on lack of
    novelty, not patent-eligible subject matter. In American
    Wood-Paper Co. v. Fibre Disintegrating Co., the Court
    held the challenged patent “void for want of novelty in the
    manufacture patented,” because the “[p]aper-pulp ob-
    tained from various vegetable substances was in common
    use before the original patent was granted . . . , and
    whatever may be said of their process for obtaining it, the
    product was in no sense new.” 
    90 U.S. 566
    , 596 (1874).
    Similarly, in Cochrane v. Badische Anilin & Soda Fabrik,
    the Court held that a claim to artificial alizarine covered
    an old and well-known substance, the alizarine of madder,
    which could not be patented although made artificially for
    the first time. 
    111 U.S. 293
    , 311 (1884); see also id. at
    308-09 (“It is very plain that the specification of the
    original patent, No. 95,465, states the invention to be a
    process for preparing alizarine, not as a new substance
    prepared for the first time, but as the substance already
    known as alizarine, to be prepared, however, by the new
    process, which process is to be the subject of the patent,
    and is the process of preparing the known product aliza-
    rine from anthracine.” (emphases added)).
    43                        ASSOCIATION FOR MOLECULAR    v. PTO
    eligible manufacture or composition of matter within the
    meaning of § 101. 447 U.S. at 305, 307. The microorgan-
    isms were bacteria genetically engineered with four
    naturally occurring DNA plasmids, each of which enabled
    the breakdown of a different component of crude oil. Id.
    at 305, 305 n.1. The bacteria, as a result, could break
    down multiple components of crude oil, a trait possessed
    by no single naturally occurring bacterium and of signifi-
    cant use in more efficiently treating oil spills. Id. at 305,
    305 n.2. The Court held that the bacteria qualified as
    patent-eligible subject matter because the “claim is not to
    a hitherto unknown natural phenomenon, but to a non-
    naturally occurring manufacture or composition of mat-
    ter—a product of human ingenuity ‘having a distinctive
    name, character [and] use.’” Id. at 309-10 (quoting Har-
    tranft v. Wiegmann, 
    121 U.S. 609
    , 615 (1887)).
    To underscore the point, the Court compared Chakra-
    barty’s engineered bacteria with the mixed bacterial
    cultures found unpatentable in Funk Brothers, again
    casting this case, more relating to obviousness, in terms of
    § 101. See Parker v. Flook, 
    437 U.S. 584
    , 591 (1978);
    Benson, 409 U.S. at 67. In Funk Brothers, the patentee
    discovered that certain strains of nitrogen-fixing bacteria
    associated with leguminous plants do not mutually inhibit
    each other. 333 U.S. at 129-30. Based on that discovery,
    the patentee produced (and claimed) mixed cultures of
    nitrogen-fixing species capable of inoculating a broader
    range of leguminous plants than single-species cultures.
    Id. The Court held that the bacteria’s cooperative quali-
    ties were, “like the heat of the sun, electricity, or the
    qualities of metals,” the “work of nature,” and thus not
    patentable. Id. at 130. The Court also held that applying
    the newly discovered bacterial compatibility to create a
    mixed culture was not a patentable advance because no
    species acquired a different property or use. Id. at 131.
    ASSOCIATION FOR MOLECULAR   v. PTO                        44
    The Chakrabarty Court thus concluded that what distin-
    guished Chakrabarty’s oil-degrading bacteria from the
    mixed cultures claimed in Funk Brothers, and made the
    former patent-eligible, was that Chakrabarty’s bacteria
    had “markedly different characteristics from any [bacte-
    rium] found in nature” based on the efforts of the pat-
    entee. Chakrabarty, 447 U.S. at 310.
    One distinction, therefore, between products of nature
    and human-made invention for purposes of § 101 turns on
    a change in the claimed composition’s identity compared
    with what exists in nature. Specifically, the Supreme
    Court has drawn a line between compositions that, even if
    arrayed in useful combinations or harnessed to exploit
    newly discovered properties, have similar characteristics
    as in nature, and compositions that human intervention
    has given “markedly different,” or “distinctive,” character-
    istics. Id. (citing Hartranft, 121 U.S. at 615); see also Am.
    Fruit Growers v. Brogdex Co., 
    283 U.S. 1
    , 11 (1931).
    Applying this test to the isolated DNAs in this case, the
    challenged claims are drawn to patent-eligible subject
    matter because the claims cover molecules that are mark-
    edly different—have a distinctive chemical structure and
    identity—from those found in nature.
    It is undisputed that Myriad’s claimed isolated DNAs
    exist in a distinctive chemical form—as distinctive chemi-
    cal molecules—from DNAs in the human body, i.e., native
    DNA. Natural DNA exists in the body as one of forty-six
    large, contiguous DNA molecules. Each of those DNA
    molecules is condensed and intertwined with various
    proteins, including histones, to form a complex tertiary
    structure known as chromatin that makes up a larger
    structural complex, a chromosome. See supra, Figure 3.
    Inside living cells, the chromosomes are further encapsu-
    lated within a series of membranes and suspended in a
    complex intracellular milieu.
    45                        ASSOCIATION FOR MOLECULAR     v. PTO
    Isolated DNA, in contrast, is a free-standing portion of
    a larger, natural DNA molecule. Isolated DNA has been
    cleaved (i.e., had covalent bonds in its backbone chemi-
    cally severed) or synthesized to consist of just a fraction of
    a naturally occurring DNA molecule. For example, the
    BRCA1 gene in its native state resides on chromosome 17,
    a DNA molecule of around eighty million nucleotides.
    Similarly, BRCA2 in its native state is located on chromo-
    some 13, a DNA of approximately 114 million nucleotides.
    In contrast, isolated BRCA1 and BRCA2, with introns,
    each consists of just 80,000 or so nucleotides. And with-
    out introns, BRCA2 shrinks to approximately 10,200
    nucleotides and BRCA1 to just around 5,500 nucleotides.
    Furthermore, claims 5 and 6 of the ’282 patent cover
    isolated DNAs, e.g., primers or probes, having as few as
    fifteen nucleotides of a BRCA sequence. Accordingly,
    BRCA1 and BRCA2 in their isolated states are different
    molecules from DNA that exists in the body; isolated DNA
    results from human intervention to cleave or synthesize a
    discrete portion of a native chromosomal DNA, imparting
    on that isolated DNA a distinctive chemical identity as
    compared to native DNA.
    As the above description indicates, isolated DNA is
    not just purified DNA. Purification makes pure what was
    the same material, but was combined, or contaminated,
    with other materials. Although isolated DNA is removed
    from its native cellular and chromosomal environment, it
    has also been manipulated chemically so as to produce a
    molecule that is markedly different from that which exists
    in the body. Accordingly, this is not a situation, as in
    Parke-Davis & Co. v. H.K. Mulford Co., in which purifica-
    tion of adrenaline resulted in the identical molecule,
    albeit being “for every practical purpose a new thing
    commercially and therapeutically.”      
    189 F. 95
    , 103
    (C.C.S.D.N.Y. 1911). Judge Learned Hand’s opinion for
    ASSOCIATION FOR MOLECULAR    v. PTO                        46
    the district court in that oft-cited case held the purified
    “Adrenalin” to be patent-eligible subject matter. Id. The
    In re Marden cases are similarly inapposite, directed as
    they are to the patent ineligibility of purified natural
    elements—ductile uranium, 
    47 F.2d 957
     (CCPA 1931),
    and vanadium, 
    47 F.2d 958
     (CCPA 1931)—that are inher-
    ently ductile in purified form. While purified natural
    products thus may or may not qualify for patent under
    § 101, the isolated DNAs of the present patents constitute
    an a fortiori situation, where they are not only purified;
    they are different from the natural products in “name,
    character, and use.” Chakrabarty, 447 U.S. at 309-10. 11
    Parke-Davis and Marden address a situation in which
    claimed compound A is purified from a physical mixture
    that contains compound A. In this case, the claimed
    11  In re Bergy, relating to a purified microorganism,
    
    596 F.2d 952
    , 967-68 (CCPA 1979), was once a companion
    case to Chakrabarty but was vacated by the Supreme
    Court and remanded for dismissal as moot when the
    inventors withdrew their claim from the pending applica-
    tion. Diamond v. Chakrabarty, 
    444 U.S. 1028
     (1980).
    Other CCPA cases cited by the parties and amici were not
    decided based on patent eligibility. In In re Bergstrom,
    the court held that pure prostaglandin compounds,
    PGE(2) and PGE(3), were improperly rejected as lacking
    novelty. 
    427 F.2d 1394
    , 1394 (CCPA 1970); see Bergy, 596
    F.2d at 961 (recognizing Bergstrom as a case decided
    under § 102). Similarly in In re Kratz, the court held
    nonobvious claims to synthetically produced, substan-
    tially pure 2-methyl-2-pentenoic acid, a chemical that
    gives strawberries their flavor. 
    592 F.2d 1169
    , 1170
    (CCPA 1979); see also In re King, 
    107 F.2d 618
    , 619
    (CCPA 1939) (holding claims to vitamin C invalid for lack
    of novelty, as “[a]ppellants were not the first to discover or
    produce [vitamin C] in its pure form”); In re Merz, 
    97 F.2d 599
    , 601 (CCPA 1938) (holding claims to artificial ultra-
    marine that contains non-floatable impurities invalid as
    not “inventive,” and thus obvious).
    47                       ASSOCIATION FOR MOLECULAR    v. PTO
    isolated DNA molecules do not exist in nature within a
    physical mixture to be purified. They have to be chemi-
    cally cleaved from their native chemical combination with
    other genetic materials. In other words, in nature, the
    claimed isolated DNAs are covalently bonded to such
    other materials. Thus, when cleaved, an isolated DNA
    molecule is not a purified form of a natural material, but
    a distinct chemical entity that is obtained by human
    intervention. See Chakrabarty, 447 U.S. at 313 (“the
    relevant distinction [is] between products of nature . . .
    and human-made inventions”). In fact, some forms of
    isolated DNA may require no purification at all, because
    DNAs can be chemically synthesized directly as isolated
    molecules.
    The above analysis holding the isolated DNA mole-
    cules to be patent-eligible subject matter applies to all of
    the asserted composition claims on appeal in this case.
    However, as the government has pointed out, claim 2 of
    the ’282 patent is narrower than claim 1 and reads only
    on cDNAs, which lack the non-coding introns present in
    the genomic BRCA1 gene. 12 While, as we have held, all of
    the claimed isolated DNAs are eligible for patent as
    compositions of matter distinct from natural DNA, the
    claimed cDNAs are especially distinctive, lacking the non-
    coding introns present in naturally occurring chromoso-
    mal DNA. They are even more the result of human
    intervention into nature and are hence patent-eligible
    subject matter. The government, as noted earlier, has
    agreed with that conclusion. Br. United States, 
    2010 WL 4853320
    , at 14-17.
    The dissent disparages the significance of a “chemical
    bond,” presumably meaning a covalent bond, in distin-
    12 Claims 2 and 7 of the ’282 patent and claim 7 of
    the ’492 patent recite isolated cDNA molecules.
    ASSOCIATION FOR MOLECULAR   v. PTO                       48
    guishing structurally between one molecular species and
    another. But a covalent bond is the defining boundary
    between one molecule and another, and the dissent’s
    citation of Linus Pauling’s comment that covalent bonds
    “make it convenient for the chemist to consider [the
    aggregate] as an independent molecular species” under-
    lines the point. The covalent bonds in this case connect
    different chemical moieties to one another.
    Plaintiffs argue that because the claimed isolated
    DNAs retain the same nucleotide sequence as native
    DNAs, they do not have any “markedly different” charac-
    teristics. This approach, however, looks not at whether
    isolated DNAs are markedly different—have a distinctive
    characteristic—from naturally occurring DNAs, as the
    Supreme Court has directed, but at one similarity, albeit
    a key one: the information content contained in isolated
    and native DNAs’ nucleotide sequences. Adopting this
    approach, the district court disparaged the patent eligibil-
    ity of isolated DNA molecules because their genetic func-
    tion is to transmit information. We disagree, as it is the
    distinctive nature of DNA molecules as isolated composi-
    tions of matter that determines their patent eligibility
    rather than their physiological use or benefit. Uses of
    chemical substances may be relevant to the nonobvious-
    ness of these substances or to method claims embodying
    those uses, but the patent eligibility of an isolated DNA is
    not negated because it has similar informational proper-
    ties to a different, more complex natural material. The
    claimed isolated DNA molecules are distinct from their
    natural existence as portions of larger entities, and their
    informational content is irrelevant to that fact. We rec-
    ognize that biologists may think of molecules in terms of
    their uses, but genes are in fact materials having a
    chemical nature and, as such, are best described in pat-
    ents by their structures rather than by their functions. In
    49                        ASSOCIATION FOR MOLECULAR    v. PTO
    fact, many different materials may have the same func-
    tion (e.g., aspirin, ibuprofen, and naproxen).
    The district court in effect created a categorical rule
    excluding isolated genes from patent eligibility. See SJ
    Op., 
    702 F. Supp. 2d
     at 228-29. But the Supreme Court
    has “more than once cautioned that courts ‘should not
    read into the patent laws limitations and conditions
    which the legislature has not expressed,’” Bilski, 130 S.
    Ct. at 3226 (quoting Diehr, 450 U.S. at 182), and has
    repeatedly rejected new categorical exclusions from
    § 101’s scope, see id. at 3227-28 (rejecting the argument
    that business method patents should be categorically
    excluded from § 101); Chakrabarty, 447 U.S. at 314-17
    (same for living organisms). Contrary to the conclusions
    of the district court and the suggestions of Plaintiffs and
    some amici, § 101 applies equally to all putative inven-
    tions, and isolated DNA is not and should not be consid-
    ered a special case for purposes of patent eligibility under
    existing law. See, e.g., SJ Op., 
    702 F. Supp. 2d
     at 185
    (“DNA represents the physical embodiment of biological
    information, distinct in its essential characteristics from
    any other chemical found in nature.”); Appellees’ Suppl.
    Br. at 4-5 (“Unlike other chemicals, the information
    encoded by DNA reflects its primary biological function . .
    . .”).
    Under the statutory rubric of § 101, isolated DNA is a
    tangible, man-made composition of matter defined and
    distinguished by its objectively discernible chemical
    structure. Whether its unusual status as a chemical
    entity that conveys genetic information warrants singular
    treatment under the patent laws as the district court did
    is a policy question that we are not entitled to address.
    Cf. Nat’l Fed’n of Indep. Bus. v. Sebelius, 
    132 S. Ct. 2566
    ,
    slip op. at 6 (2012) (“[W]e possess neither the expertise
    nor the prerogative to make policy judgments. Those
    ASSOCIATION FOR MOLECULAR   v. PTO                        50
    decisions are entrusted to our Nation’s elected leaders,
    who can be thrown out of office if the people disagree with
    them.”). Congress is presumed to have been aware of the
    issue, having enacted a comprehensive patent reform act
    during the pendency of this case, and it is ultimately for
    Congress if it wishes to overturn case law and the long
    practice of the PTO to determine that isolated DNA must
    be treated differently from other compositions of matter to
    account for its perceived special function. We therefore
    reject the district court’s unwarranted categorical exclu-
    sion of isolated DNA molecules.
    Because isolated DNAs, not just cDNAs, have a mark-
    edly different chemical structure compared to native
    DNAs, we reject the government’s earlier proposed “magic
    microscope” test, as it misunderstands the difference
    between science and invention and fails to take into
    account the existence of molecules as separate chemical
    entities. The ability to visualize a DNA molecule through
    a microscope, or by any other means, when it is bonded to
    other genetic material, is worlds apart from possessing an
    isolated DNA molecule that is in hand and usable. It is
    the difference between knowledge of nature and reducing
    a portion of nature to concrete form, the latter activity
    being what the patent laws seek to encourage and protect.
    The government’s microscope could focus in on a claimed
    portion of any complex molecule, rendering that claimed
    portion patent ineligible, even though that portion never
    exists as a separate molecule in the body or anywhere else
    in nature, and may have an entirely different utility.
    That would discourage innovation. One cannot visualize
    a portion of a complex molecule, including a DNA contain-
    ing a particular gene, and will it into isolation as a unique
    entity. Visualization does not cleave and isolate the
    particular DNA; that is the act of human invention.
    51                         ASSOCIATION FOR MOLECULAR     v. PTO
    The Supreme Court in Mayo focused on its concern
    that permitting patents on particular subject matter
    would prevent use by others of, in Mayo, the correlation
    recited in the method claims. Plaintiffs argue here that
    they are preempted from using the patented DNA mole-
    cules. The answer to that concern is that permitting
    patents on isolated genes does not preempt a law of
    nature. A composition of matter is not a law of nature.
    Moreover, as indicated earlier, a limited preemption is
    inherent in every patent: the right to exclude for a limited
    period of time. 35 U.S.C. § 154(a)(1) (“Every patent shall
    contain . . . a grant to the patentee, his heirs or assigns, of
    the right to exclude others from making, using, offering
    for sale, or selling the invention throughout the United
    States . . . .”). When the patent expires, the public is
    entitled to practice the invention of the patent. That is
    true of all inventions; during the term of the patent,
    unauthorized parties are “preempted” from practicing the
    patent, but only for its limited term. The seven patents
    being challenged here all expire by December 18, 2015. 13
    Any preemption thus is limited, very limited in the case of
    the present patents. Moreover, patents are rarely en-
    forced against scientific research, even during their terms.
    The remand of this case for reconsideration in light of
    Mayo might suggest, as Plaintiffs and certain amici state,
    that the composition claims are mere reflections of a law
    of nature. Respectfully, they are not, any more than any
    product of man reflects and is consistent with a law of
    nature. Everything and everyone comes from nature,
    following its laws. But the compositions here are not
    13 Specifically, the ’441 patent will expire on August
    12, 2014; the ’473 patent will expire on December 2, 2014;
    the ’999 and ’001 patents will expire on January 20, 2015;
    the ’282 patent will expire on May 5, 2015; and the ’492
    and ’857 patents will expire on December 18, 2015.
    ASSOCIATION FOR MOLECULAR    v. PTO                         52
    natural products. They are the products of man, albeit
    following, as all materials do, laws of nature.
    The dissent indicates that “elemental lithium (like
    other elements) would not be patentable subject matter,
    even if it could only be extracted from nature through an
    isolation process.” But the isolation here is not a simple
    separation from extraneous materials, but conversion to a
    different molecular entity. And again, these facts are not
    before us, so we do not attempt to evaluate the patentabil-
    ity of one form of lithium over another. Courts decide
    cases; they do not draft comprehensive legal treatises.
    Suffice it to say, however, that if lithium is found in the
    earth as other than elemental lithium because it reacts
    with air and water to form, for example, lithium oxide or
    lithium hydroxide, it is a different material. A lithium
    compound is not elemental lithium.
    It is also important to dispute the dissent’s analogy to
    snapping a leaf from a tree. With respect, no one could
    contemplate that snapping a leaf from a tree would be
    worthy of a patent, whereas isolating genes to provide
    useful diagnostic tools and medicines is surely what the
    patent laws are intended to encourage and protect.
    Snapping a leaf from a tree is a physical separation,
    easily done by anyone. Creating a new chemical entity is
    the work of human transformation, requiring skill,
    knowledge, and effort. See Mayo, 132 S. Ct. at 1294
    (“While a scientific truth . . . is not a patentable invention,
    a novel and useful structure created with the aid of
    knowledge of scientific truth may be.”) (quoting Mackay
    Radio & Tel. Co. v. Radio Corp. of Am., 
    306 U.S. 86
    , 94
    (1939)).
    The dissent also mentions several times in its opinion
    the “breathtaking[]” breadth of certain claims as grounds
    for objecting to their patentability. However, we do not
    53                       ASSOCIATION FOR MOLECULAR    v. PTO
    have here any rejection or invalidation on the various
    grounds relating to breadth, such as in 35 U.S.C. § 112.
    The issue before us is patent eligibility under § 101, not
    the adequacy of the patents’ disclosure to support particu-
    lar claims. Nor is it lack of patentability for obviousness,
    as the dissent intimates, that is before us.
    The dissent finally attempts to analogize the creation
    of the isolated DNAs in this case to the removal of a
    kidney from the human body, indicating that the latter
    does not create patent-eligible subject matter, hence the
    claimed isolated DNAs also do not. Such an analogy is
    misplaced. Extracting a kidney from a body does not
    result in a patent-eligible composition, as an isolated gene
    has been and should be. A kidney is an organ, not a well
    defined composition of matter or an article of manufacture
    specified by § 101. No one could confuse extensive re-
    search needed to locate, identify, and isolate a gene with
    the extraction of an organ from a body. One is what
    patents are intended to stimulate research on and hence
    are properly patent eligible, and the other, while obvi-
    ously essential to human wellbeing, is not what patents
    are understood to cover under the patent statute. An
    isolated DNA is properly characterized as a composition of
    matter under § 101; no one would so characterize an
    isolated body organ.
    Finally, our decision that isolated DNA molecules are
    patent eligible comports with the longstanding practice of
    the PTO and the courts. The Supreme Court has repeat-
    edly stated that changes to longstanding practice should
    come from Congress, not the courts. In J.E.M. Ag Supply,
    Inc. v. Pioneer Hi-Bred International, Inc., the Court
    rejected the argument that plants did not fall within the
    scope of § 101, relying in part on the fact that “the PTO
    has assigned utility patents for plants for at least 16
    years and there has been no indication from either Con-
    ASSOCIATION FOR MOLECULAR   v. PTO                        54
    gress or agencies with expertise that such coverage is
    inconsistent with [federal law].” 
    534 U.S. 124
    , 144-45
    (2001); see also Festo Corp. v. Shoketsu Kinzoku Kogyo
    Kabushiki Co., 
    535 U.S. 722
    , 739 (2002) (“[C]ourts must
    be cautious before adopting changes that disrupt the
    settled expectations of the inventing community.” (citing
    Warner-Jenkinson Co. v. Hilton Davis Chem. Co., 
    520 U.S. 17
    , 28 (1997))); Ariad Pharms., Inc. v. Eli Lilly & Co.,
    
    598 F.3d 1336
    , 1347 (Fed. Cir. 2010) (en banc) (upholding
    a written description requirement separate from enable-
    ment based in part on stare decisis).
    In this case, the PTO has issued patents relating to
    DNA molecules for almost thirty years. In the early
    1980s, the Office granted the first human gene patents.
    See Eric J. Rogers, Can You Patent Genes? Yes and No,
    93 J. Pat. & Trademark Off. Soc’y 19 (2010). It is esti-
    mated that the PTO has issued 2,645 patents claiming
    “isolated DNA” over the past twenty-nine years, J.A.
    3710, and that by 2005, had granted 40,000 DNA-related
    patents relating to, in non-native form, genes in the
    human genome, Rogers, supra at 40. In 2001, the PTO
    issued Utility Examination Guidelines, which reaffirmed
    the agency’s position that isolated DNA molecules are
    patent eligible, 66 Fed. Reg. 1092-94 (Jan. 5, 2001), and
    Congress has not indicated that the PTO’s position is
    inconsistent with § 101. If the law is to be changed, and
    DNA inventions excluded from the broad scope of § 101,
    contrary to the settled expectation of the inventing and
    investing communities, the decision must come, not from
    the courts, but from Congress. The dissent mentions
    possible “adverse effects” that may occur if isolated DNAs
    are held to be patent eligible. But, respectfully, it is the
    adverse effects on innovation that a holding of ineligibility
    might cause. Patents encourage innovation and even
    55                        ASSOCIATION FOR MOLECULAR     v. PTO
    encourage inventing around; we must be careful not to
    rope off far-reaching areas of patent eligibility.
    Accordingly, we once again conclude that claims 1, 2,
    5, 6, and 7 of the ’282 patent; claims 1, 6, and 7 of the ’492
    patent; and claim 1 of the ’473 patent directed to isolated
    DNA molecules recite patent-eligible subject matter under
    § 101. Mayo does not change that result. In so doing, we
    reiterate that the issue before us is patent eligibility, not
    patentability, about which we express no opinion.
    II. Method Claims
    We turn next to Myriad’s challenged method claims.
    This court in its now-vacated decision of July 29, 2011,
    had held method claims 1 of the ’999, ’001, and ’441
    patents, as well as method claims 1 and 2 of the ’857
    patent—all of which consist of analyzing and comparing
    certain DNA sequences—not to be patent-eligible subject
    matter on the ground that they claim only abstract men-
    tal processes. In light of the Supreme Court’s decision in
    Mayo, we reaffirm that prior holding. The Court made
    clear that such diagnostic methods in that case essentially
    claim natural laws that are not eligible for patent. With-
    out expressly analyzing the instant method claims in the
    context of the Court’s reasoning, but in light of the Court’s
    holding, and in view of our own prior reasoning, set forth
    herein below, those method claims cannot stand.
    In our prior decision, however, we reversed the dis-
    trict court’s holding that claim 20 of the ’282 patent was
    not eligible for patent. We did so on the ground, inter
    alia, that, in addition to the step of comparing the cells’
    growth rates, the claim also recites the steps of growing
    transformed cells and determining those growth rates.
    We relied on the fact that those steps were transforma-
    tive. Although the Court has now held that certain trans-
    formative steps are not necessarily sufficient under § 101
    ASSOCIATION FOR MOLECULAR   v. PTO                        56
    if the recited steps only rely on natural laws, we once
    again, even in light of Mayo, arrive at the same conclusion
    of patent-eligibility because at the heart of claim 20 is a
    transformed cell, which is made by man, in contrast to a
    natural material.
    A. Methods of “Comparing” or “Analyzing” Sequences
    Myriad argued that its claims to methods of “compar-
    ing” or “analyzing” BRCA sequences satisfy the machine-
    or-transformation test because each requires a transfor-
    mation—extracting and sequencing DNA molecules from
    a human sample—before the sequences can be compared
    or analyzed. According to Myriad, the district court failed
    to recognize the transformative nature of the claims by (1)
    misconstruing the claim term “sequence” as merely in-
    formation, rather than a physical molecule; and (2) erro-
    neously concluding, in the alternative, that Myriad’s
    proposed transformations were mere data-gathering
    steps, rather than central to the purpose of the claims.
    Plaintiffs responded that these method claims are
    drawn to the abstract idea of comparing one sequence to a
    reference sequence and preempt a phenomenon of na-
    ture—the correlation of genetic mutations with a predis-
    position to cancer. And, according to the Plaintiffs,
    limiting the claims’ application to a specific technological
    field, i.e., BRCA gene sequences, is insufficient to render
    the claims patent eligible. Plaintiffs also assert that the
    claims do not meet the machine-or-transformation test
    because the claims’ plain language includes just the one
    step of “comparing” or “analyzing” two gene sequences.
    We renew our conclusion that Myriad’s claims to
    “comparing” or “analyzing” two gene sequences fall out-
    side the scope of § 101 because they claim only abstract
    mental processes. See Benson, 409 U.S. at 67 (“Phenom-
    ena of nature, . . . mental processes, and abstract intellec-
    57                        ASSOCIATION FOR MOLECULAR    v. PTO
    tual concepts are not patentable, as they are the basic
    tools of scientific and technological work.”). The claims
    recite, for example, a “method for screening a tumor
    sample,” by “comparing” a first BRCA1 sequence from a
    tumor sample and a second BRCA1 sequence from a non-
    tumor sample, wherein a difference in sequence indicates
    an alteration in the tumor sample. ’001 patent claim 1.
    This claim thus recites nothing more than the abstract
    mental steps necessary to compare two different nucleo-
    tide sequences: one looks at the first position in a first
    sequence; determines the nucleotide sequence at that first
    position; looks at the first position in a second sequence;
    determines the nucleotide sequence at that first position;
    determines if the nucleotide at the first position in the
    first sequence and the first position in the second se-
    quence are the same or different, wherein the latter
    indicates an alteration; and repeats the process for the
    next position.
    Limiting the comparison to just the BRCA genes or,
    as in the case of claim 1 of the ’999 patent, to just the
    identification of particular alterations, fails to render the
    claimed process patent-eligible. As the Supreme Court
    has held, “the prohibition against patenting abstract ideas
    ‘cannot be circumvented by attempting to limit the use of
    the formula to a particular technological environment.’”
    Bilski, 130 S. Ct. at 3230 (quoting Diehr, 450 U.S. at 191-
    92); see also id. at 3231 (“Flook established that limiting
    an abstract idea to one field of use . . . did not make the
    concept patentable.”). Although the application of a
    formula or abstract idea in a process may describe patent-
    eligible subject matter, id. at 3230, Myriad’s claims do not
    apply the step of comparing two nucleotide sequences in a
    process. Rather, the step of comparing two DNA se-
    quences is the entire process that is claimed.
    ASSOCIATION FOR MOLECULAR   v. PTO                     58
    To avoid this result, Myriad attempts to read into its
    method claims additional, allegedly transformative steps.
    As described above, Myriad reads into its claims the steps
    of (1) extracting DNA from a human sample, and (2)
    sequencing the BRCA DNA molecule, arguing that both
    steps necessarily precede the step of comparing nucleotide
    sequences. The claims themselves, however, do not
    include either of these steps. The claims do not specify
    any action prior to the step of “comparing” or “analyzing”
    two sequences; the claims recite just the one step of
    “comparing” or “analyzing.” Moreover, those terms’ plain
    meaning does not include Myriad’s proposed sample-
    processing steps; neither comparing nor analyzing means
    or implies “extracting” or “sequencing” DNA or otherwise
    “processing” a human sample.
    Myriad claims that “comparing” and “analyzing” take
    on such meaning when read in light of the patent specifi-
    cations. Specifically, Myriad argues that the specifica-
    tions show that the claim term “sequence” refers not to
    information, but rather to a physical DNA molecule,
    whose sequence must be determined before it can be
    compared. That may be true, but the claims only recite
    mental steps, not the structure of physical DNA mole-
    cules.
    Accordingly, Myriad’s challenged method claims are
    indistinguishable from the claims the Supreme Court
    found invalid under § 101 in Mayo. In Mayo, the patents
    claimed methods for optimizing the dosage of thiopurine
    drugs administered to patients with gastrointestinal
    disorders. 132 S. Ct. at 1295. As written, the claimed
    methods included the steps of (a) “administering” a thio-
    purine drug to a subject, and/or (b) “determining” the
    drug’s metabolite levels in the subject, wherein the meas-
    ured metabolite levels are compared with predetermined
    levels to optimize drug dosage. Id. In holding that the
    59                        ASSOCIATION FOR MOLECULAR    v. PTO
    claims satisfied § 101, this court concluded that, in addi-
    tion to the “administering” step being transformative, the
    “determining” step was both transformative and central
    to the purpose of the claims. Prometheus, 628 F.3d at
    1357. However, the Supreme Court held that the steps of
    administering and determining, combined with a correla-
    tive “wherein” clause, were not sufficiently transformative
    of what was otherwise a claim to a natural law. That
    holding governs Myriad’s claims to methods of “compar-
    ing” and “analyzing” DNA sequences.
    Myriad’s other claims do not even include a Mayo-like
    step of “determining” the sequence of BRCA genes by, e.g.,
    isolating the genes from a blood sample and sequencing
    them, or any other putatively transformative step.
    Rather, the comparison between the two sequences can be
    accomplished by mere inspection alone. Accordingly,
    Myriad’s claimed methods of comparing or analyzing
    nucleotide sequences are only directed to the abstract
    mental process of comparing two nucleotide sequences.
    As such, we hold claims 1 of the ’999 patent, ’001 patent,
    and ’441 patent and claims 1 and 2 of the ’857 patent
    invalid under § 101 for claiming patent-ineligible proc-
    esses.
    B. Method of Screening Potential Cancer Therapeutics
    Lastly, we turn to claim 20 of the ’282 patent, directed
    to a method for screening potential cancer therapeutics
    via changes in cell growth rates of transformed cells. The
    parties agree that those transformed cells arose from
    human effort; i.e., they are not natural products. Plain-
    tiffs nonetheless challenge claim 20 as directed to the
    abstract idea of comparing the growth rates of two cell
    populations and as preempting a basic scientific princi-
    ple—that a slower growth rate in the presence of a poten-
    tial therapeutic compound suggests that the compound is
    ASSOCIATION FOR MOLECULAR   v. PTO                      60
    a cancer therapeutic. Plaintiffs therefore contend that
    claim 20 is indistinguishable from the claims held ineligi-
    ble in Mayo. We disagree.
    Claim 20 recites a method that comprises the steps of
    (1) growing host cells transformed with an altered BRCA1
    gene in the presence or absence of a potential cancer
    therapeutic, (2) determining the growth rate of the host
    cells with or without the potential therapeutic, and (3)
    comparing the growth rate of the host cells. Claim 20
    thus recites a screening method premised on the use of
    “transformed” host cells. Those cells, like the patent-
    eligible cells in Chakrabarty, are not naturally occurring.
    Rather, they are derived by altering a cell to include a
    foreign gene, resulting in a man-made, transformed cell
    with enhanced function and utility. See ’282 patent col.27
    ll.28-33. The claim thus includes more than the abstract
    mental step of looking at two numbers and “comparing”
    two host cells’ growth rates.
    In Mayo, the Supreme Court invalidated claims di-
    rected to the relationship between concentrations of
    certain metabolites in the blood and the likelihood that a
    particular dosage of a thiopurine drug will be optimum,
    stating that steps of “administering” and “determining,”
    coupled with a correlative “wherein” clause, were insuffi-
    cient to differentiate the claimed method from the natural
    laws encompassed by the claims. In short, “to transform
    an unpatentable law of nature into a patent-eligible
    application of such a law, one must do more than simply
    state the law of nature while adding the words ‘apply it’.”
    132 S. Ct. at 1294.
    Here, claim 20 does do more; it does not simply apply
    a law of nature. Of course, all activity, whether chemical,
    biological, or physical, relies on natural laws. But, more
    to the point here is that claim 20 applies certain steps to
    61                       ASSOCIATION FOR MOLECULAR    v. PTO
    transformed cells that, as has been pointed out above, are
    a product of man, not of nature. The Court, in its evalua-
    tion of the Mayo method claims, found that the additional
    steps of those claims were not sufficient to “transform” the
    nature of the claims from mere expression of natural laws
    to patent-eligible subject matter. By definition, however,
    performing operations, even known types of steps, on, or
    to create, novel, i.e., transformed subject matter is the
    stuff of which most process or method invention consists.
    All chemical processes, for example, consist of hydrolyz-
    ing, hydrogenating, reacting, etc. In situations where the
    objects or results of such steps are novel and nonobvious,
    they should be patent-eligible. It is rare that a new
    reaction or method is invented; much process activity is to
    make new compounds or products using established
    processes. Thus, once one has determined that a claimed
    composition of matter is patent-eligible subject matter,
    applying various known types of procedures to it is not
    merely applying conventional steps to a law of nature.
    The transformed, man-made nature of the underlying
    subject matter in claim 20 makes the claim patent-
    eligible. The fact that the claim also includes the steps of
    determining the cells’ growth rates and comparing growth
    rates does not change the fact that the claim is based on a
    man-made, non-naturally occurring transformed cell—
    patent-eligible subject matter.
    Furthermore, the claim does not cover all cells, all
    compounds, or all methods of determining the therapeutic
    effect of a compound. Rather, it is tied to specific host
    cells transformed with specific genes and grown in the
    presence or absence of a specific type of therapeutic.
    Accordingly, we hold that claim 20 of the ’282 patent
    recites patent-eligible subject matter under § 101.
    Whether such processes, including claim 20, meet other
    ASSOCIATION FOR MOLECULAR   v. PTO                        62
    tests for patentability, such as novelty or nonobviousness,
    is not before us.
    CONCLUSION
    For the foregoing reasons, we affirm the district
    court’s decision to exercise declaratory judgment jurisdic-
    tion over this case, we reverse the district court’s grant of
    summary judgment with regard to Myriad’s composition
    claims to isolated DNAs, including cDNAs, we affirm the
    district court’s grant of summary judgment with regard to
    Myriad’s method claims directed to comparing or analyz-
    ing gene sequences, and we reverse the district court’s
    grant of summary judgment with regard to Myriad’s
    method claim to screening potential cancer therapeutics
    via changes in cell growth rates of novel, man-made
    transformed cells.
    AFFIRMED IN PART and REVERSED IN PART
    COSTS
    Costs to Myriad.
    United States Court of Appeals
    for the Federal Circuit
    __________________________
    THE ASSOCIATION FOR MOLECULAR
    PATHOLOGY, THE AMERICAN COLLEGE OF
    MEDICAL GENETICS, THE AMERICAN SOCIETY
    FOR CLINICAL PATHOLOGY, THE COLLEGE OF
    AMERICAN PATHOLOGISTS, HAIG KAZAZIAN,
    MD, ARUPA GANGULY, PHD, WENDY CHUNG, MD,
    PHD, HARRY OSTRER, MD, DAVID LEDBETTER,
    PHD, STEPHEN WARREN, PHD, ELLEN
    MATLOFF, M.S., ELSA REICH, M.S., BREAST
    CANCER ACTION, BOSTON WOMEN’S HEALTH
    BOOK COLLECTIVE, LISBETH CERIANI, RUNI
    LIMARY, GENAE GIRARD, PATRICE FORTUNE,
    VICKY THOMASON, AND KATHLEEN RAKER,
    Plaintiffs-Appellees,
    v.
    UNITED STATES PATENT AND TRADEMARK
    OFFICE,
    Defendant,
    and
    MYRIAD GENETICS, INC.,
    Defendant-Appellant,
    and
    LORRIS BETZ, ROGER BOYER, JACK BRITTAIN,
    ARNOLD B. COMBE, RAYMOND GESTELAND,
    JAMES U. JENSEN, JOHN KENDALL MORRIS,
    THOMAS PARKS, DAVID W. PERSHING, AND
    MICHAEL K. YOUNG,
    ASSOCIATION FOR MOLECULAR   v. PTO                        2
    IN THEIR OFFICIAL CAPACITY AS DIRECTORS OF THE
    UNIVERSITY OF UTAH RESEARCH FOUNDATION,
    Defendants-Appellants.
    __________________________
    2010-1406
    __________________________
    Appeal from the United States District Court for the
    Southern District of New York in case No. 09-CV-4515,
    Senior Judge Robert W. Sweet.
    __________________________
    MOORE, Circuit Judge, concurring in part.
    I join the majority opinion with respect to standing
    and the patentability of the method claims at issue. I join
    the majority with respect to claims to isolated cDNA
    sequences, and concur in the judgment with respect to
    isolated DNA sequences. I write separately to explain my
    reasoning.
    I.
    The Patent Act, 35 U.S.C. § 101, allows “[w]hoever in-
    vents or discovers any new and useful process, machine,
    manufacture, or composition of matter, or any new and
    useful improvement thereof” to obtain a patent. The plain
    language of this statute only requires that an invention be
    “new and useful,” and fall into one of four categories: a
    “process, machine, manufacture, or composition of mat-
    ter.” “Congress intended statutory subject matter to
    ‘include anything under the sun that is made by man.’”
    Diamond v. Chakrabarty, 
    447 U.S. 303
    , 309 (1980) (quot-
    ing the statutory history).
    While the plain language used by Congress did not
    limit the scope of patentable subject matter in the statute,
    3                        ASSOCIATION FOR MOLECULAR    v. PTO
    the “Court’s precedents provide three specific exceptions
    to § 101’s broad patent-eligibility principles: ‘laws of
    nature, physical phenomena, and abstract ideas.’” Bilski
    v. Kappos, 
    130 S. Ct. 3218
    , 3226 (2010) (quoting Chakra-
    barty, 447 U.S. at 309). These exceptions “rest[], not on
    the notion that natural phenomena are not processes [or
    other articulated statutory categories], but rather on the
    more fundamental understanding that they are not the
    kind of ‘discoveries’ that the statute was enacted to pro-
    tect.” Parker v. Flook, 
    437 U.S. 584
    , 593 (1978).
    Applying the judicially created exception to the oth-
    erwise broad demarcation of statutory subject matter in
    section 101 can be difficult. See Funk Bros. Seed Co. v.
    Kalo Inoculant Co., 
    333 U.S. 127
    , 134-45 (1948) (Frank-
    furter, J., concurring) (“[S]uch terms as ‘the work of
    nature’ and the ‘laws of nature’ . . . are vague and malle-
    able . . . . Arguments drawn from such terms for ascer-
    taining patentability could fairly be employed to challenge
    almost every patent.”). The analysis is relatively simple if
    the invention previously existed in nature exactly as
    claimed. For example, naturally existing minerals, a
    plant found in the wild, and physical laws such as gravity
    or E=mc2 are not patentable subject matter, even if they
    were “discovered” by an enterprising inventor. Chakra-
    barty, 447 U.S. at 309.
    Even when an invention does not exist in nature in
    the claimed state, it may still be directed to subject mat-
    ter that is not patentable. For example, in Funk Brothers,
    the Supreme Court held a patent to a combination of
    multiple naturally occurring bacterial strains was not
    patentable. Although there was “an advantage in the
    combination,” which was apparently “new and useful,”
    none of the bacterial strains “acquire[ed] a different use”
    in combination. Funk Bros., 333 U.S. at 131-32. The
    aggregation of the bacterial strains into a single product
    ASSOCIATION FOR MOLECULAR   v. PTO                         4
    produced “no new bacteria, no change in the six species of
    bacteria, and no enlargement of the range of their utility.
    Each species has the same effect it always had. The
    bacteria perform in their natural way. . . . They serve the
    ends nature originally provided and act quite independ-
    ently of any effort of the patentee.” Id.
    In contrast, the Supreme Court held bacteria that in-
    cluded extra genetic material introduced by the inventor
    were “a nonnaturally occurring manufacture or composi-
    tion of matter—a product of human ingenuity ‘having a
    distinctive name, character [and] use’” and therefore
    patentable. Chakrabarty, 447 U.S. at 309-310 (quoting
    Hartranft v. Wiegmann, 
    121 U.S. 609
    , 615 (1887)). Chak-
    rabarty explained that there is no distinction between
    inventions based on living and inanimate objects for the
    purpose of the patent statute; instead, the “relevant
    distinction” for the section 101 analysis is “between
    products of nature . . . and human-made inventions.” Id.
    at 312-13. Even if the invention was based on nature, and
    resulted in a living organism, it may fall within the scope
    of section 101. For example, “the work of the plant
    breeder ‘in aid of nature’ was patentable invention” be-
    cause “‘a plant discovery resulting from cultivation is
    unique, isolated, and is not repeated by nature, nor can it
    be reproduced by nature unaided by man.’” Id. (quoting
    S. Rep. No. 315, 71st Cong., 2d Sess., 6-8 (1930)). In
    Chakrabarty, the intervention of man resulted in bacteria
    with “markedly different characteristics” from nature and
    “the potential for significant utility,” resulting in pat-
    entable subject matter. Id. at 310.
    Funk Brothers and Chakrabarty do not stake out the
    exact bounds of patentable subject matter. Instead, each
    applies a flexible test to the specific question presented in
    order to determine whether the claimed invention falls
    within one of the judicial exceptions to patentability.
    5                         ASSOCIATION FOR MOLECULAR     v. PTO
    Funk Brothers indicates that an invention which “serve[s]
    the ends nature originally provided” is likely unpat-
    entable subject matter, but an invention that is an
    “enlargement of the range of . . . utility” as compared to
    nature may be patentable. 333 U.S. at 131. Likewise,
    Chakrabarty illustrates that an invention with a distinc-
    tive name, character, and use, e.g., markedly different
    characteristics with the potential for significant utility, is
    patentable subject matter. 447 U.S. at 309-10. Although
    the two cases result in different outcomes, the inquiry
    itself is similar.
    Courts applied an analogous patentability inquiry
    long before Funk Brothers or Chakrabarty. In one notable
    case, Judge Learned Hand held that purified adrenaline,
    a natural product, was patentable subject matter. Judge
    Hand explained that even if the claimed purified adrena-
    line were “merely an extracted product without change,
    there is no rule that such products are not patentable.”
    Parke-Davis & Co. v. H.K. Mulford Co., 
    189 F. 95
    , 103
    (S.D.N.Y. 1911). This is because “while it is of course
    possible logically to call this a purification of the princi-
    ple” the resulting purified adrenaline was “for every
    practical purpose a new thing commercially and thera-
    peutically.” Id. Similarly, in a case applying the Patent
    Act of 1952, 1 purified vitamin B-12, another natural
    product, was also held patentable subject matter within
    the meaning of section 101. Merck & Co. v. Olin Mathi-
    eson Chem. Corp., 
    253 F.2d 156
     (4th Cir. 1958). The
    Fourth Circuit explained that purified vitamin B-12 was
    “far from the premise of the [naturally occurring] princi-
    1   The Patent Act of 1952 was the first time pat-
    entable subject matter (the current section 101) was
    separated out from novelty (the current section 102).
    Previously, these two concepts were combined into a
    single section.
    ASSOCIATION FOR MOLECULAR   v. PTO                        6
    ple. . . . The new product, not just the method, had such
    advantageous characteristics as to replace the [naturally
    occurring] liver products. What was produced was, in no
    sense, an old product.” Id. at 162-63. These purified
    pharmaceutical cases are both consistent with Supreme
    Court precedent: the purified substance was “a new thing
    . . . therapeutically,” Parke-Davis, 189 F. at 103, and had
    such “advantageous characteristics” that what was pro-
    duced by purification “was, in no sense, an old product.”
    Merck, 253 F.2d at 162-63. In other words, the purified
    natural products were held to have “markedly different
    characteristics,” as compared to the impure products,
    which resulted in “the potential for significant utility.”
    Chakrabarty, 447 U.S. at 310.
    In contrast, mere purification of a naturally occurring
    element is typically insufficient to make it patentable
    subject matter. For example, our predecessor court held
    that claims to purified vanadium and purified uranium
    were not patentable subject matter since these were
    naturally occurring elements with inherent physical
    properties unchanged upon purification.         See In re
    Marden, 
    47 F.2d 958
    , 959 (CCPA 1931) (“[P]ure vanadium
    is not new in the inventive sense, and, it being a product
    of nature, no one is entitled to a monopoly of the same.”);
    In re Marden, 
    47 F.2d 957
     (CCPA 1931) (“ductile ura-
    nium” not patentable because uranium is inherently
    ductile). Likewise, claims to purified ductile tungsten
    were not patentable subject matter since pure tungsten
    existed in nature and was inherently ductile. General
    Electric Co. v. De Forest Radio Co., 
    28 F.2d 641
    , 643 (3d
    Cir. 1928). In each of these cases, purification did not
    result in an element with new properties. Instead, the
    court held the naturally occurring element inherently had
    the same characteristics and utility (e.g. ductility) as the
    claimed invention. Consistent with Funk Brothers and
    7                        ASSOCIATION FOR MOLECULAR   v. PTO
    Chakrabarty, the claims all fell within the laws of nature
    exception.
    As illustrated by these examples, courts have long ap-
    plied the principles articulated in Funk Brothers and
    Chakrabarty to different factual scenarios in order to
    determine whether an invention, as claimed, falls into the
    laws of nature exception. I see no reason to deviate from
    this longstanding flexible approach in this case.
    II.
    We reconsider whether the claims at issue in this case
    are directed to patentable subject matter following the
    remand from the Supreme Court in light of its opinion in
    Mayo Collaborative Services v. Prometheus Laboratories,
    Inc., 
    132 S. Ct. 1289
     (2012) (Prometheus). While the
    Prometheus decision does not control the outcome in this
    case, it is nonetheless instructive regarding the scope of
    the law of nature exception. As an initial matter, the
    Prometheus discussion of laws of nature (process claims)
    clearly ought to apply equally to manifestations of nature
    (composition claims). Myriad’s argument that Prome-
    theus is constrained to methods is an untenable position.
    As the Prometheus court explained: “If a law of nature
    is not patentable, then neither is a process reciting a law
    of nature, unless that process has additional features that
    provide practical assurance that the process is more than
    a drafting effort designed to monopolize the law of nature
    itself.” Id. at 1297. Prometheus did not, however, over-
    turn Funk Brothers or Chakrabarty; cases clearly more
    analogous to the one before us. Using the framework of
    Funk Brothers and Chakrabarty in conjunction with the
    direction of Prometheus, the applicable principles are: (1)
    laws of nature/manifestations of nature are not pat-
    entable; (2) a composition of matter with “markedly
    different characteristics” from that found in nature with
    ASSOCIATION FOR MOLECULAR   v. PTO                        8
    the potential for significant utility is directed to pat-
    entable subject matter.
    Does the isolation process change the DNA from an
    unpatentable manifestation of nature into a patentable
    composition of matter? Id. at 1299. Does the claimed
    isolated DNA have markedly different characteristics
    with the potential for significant utility, e.g., an
    “enlargement of the range of . . . utility” as compared to
    nature? Chakrabarty, 447 U.S. at 309-310; Funk Bros.,
    333 U.S. at 131.
    The isolated DNA claims of the patents in suit fall
    into two categories. The first category of claims is di-
    rected to isolated sequences that are identical to naturally
    occurring gene sequences. These include claims encom-
    passing both the isolated full length gene sequence (e.g.
    claim 1 of ’282 patent), which are thousands of nucleo-
    tides, and claims to shorter isolated DNA strands, with as
    few as fifteen nucleotides, whose nucleotide sequence is
    found on the chromosome (e.g. claim 5 of ’282 patent).
    The second category of claims is directed to isolated DNA
    sequences that are different from the naturally occurring
    gene sequences. These include claims to isolated cDNA
    molecules (e.g. claim 2 of the ’282 patent), which differ
    from the natural gene sequence in that the introns are
    removed, and are the opposite (complementary) sequence
    of the naturally occurring RNA.
    The cDNA claims present the easiest analysis. Al-
    though the plaintiffs (now plaintiff) in the suit argue, and
    the district court held, that cDNA falls within the “laws of
    nature” exception to section 101 patentability, the claimed
    cDNA sequences do not exist in nature. Moreover, since
    cDNA has all of the introns removed, and only contains
    the coding nucleotides, it can be used to express a protein
    in a cell which does not normally produce it. Of course,
    9                         ASSOCIATION FOR MOLECULAR    v. PTO
    the claimed isolated cDNA is inspired by nature—after all
    naturally occurring RNA is the template upon which
    cDNA is constructed. Because it is used as a template,
    however, cDNA has a complementary sequence of nucleo-
    tides, and therefore has a completely different nucleotide
    sequence than the RNA. Moreover, DNA has a different
    chemical structure than RNA, including a different base
    (T instead of U, respectively) and sugar units (deoxyribose
    instead of ribose, respectively). This results in, among
    other things, greater stability for the DNA sequence as
    compared to the RNA sequence.
    cDNA sequences thus have a distinctive character and
    use, with markedly different chemical characteristics
    from either the naturally occurring RNA or any continu-
    ous DNA sequence found on the chromosome. The
    claimed isolated cDNA sequences are the creation of man,
    made using biological tools and the naturally occurring
    mRNA as a template. cDNA is therefore not one of the
    “‘manifestations of . . . nature, free to all men and re-
    served exclusively to none’” that falls outside of the patent
    system. Chakrabarty, 447 U.S. at 309 (quoting Funk
    Bros., 333 U.S. at 130). I decline to extend the laws of
    nature exception to reach entirely manmade sequences of
    isolated cDNA, even if those sequences are inspired by a
    natural template. I therefore join the majority opinion
    with respect to the claims to cDNA sequences. 2
    DNA sequences that have the same pattern of DNA
    bases as a natural gene, in whole or in part, present a
    more difficult issue. Unlike the isolated cDNA molecules,
    whose sequence is not present in nature, the isolated
    2   To the extent the claims to shorter portions of
    cDNA include only naturally occurring sequences found in
    the chromosome, for example claim 6 of the ’282 patent,
    my reasoning is the same as for the isolated sequences of
    claim 5, discussed below.
    ASSOCIATION FOR MOLECULAR   v. PTO                       10
    DNA claims include nucleotide sequences which are found
    in the human body, albeit as part of a much larger mole-
    cule, the chromosome. To the extent the majority rests its
    conclusion on the chemical differences between genomic
    and isolated DNA (breaking the covalent bonds), I cannot
    agree that this is sufficient to hold that the claims to
    human genes are directed to patentable subject matter. I
    agree that isolated genes are a different molecule and are
    therefore not squarely analogous to unpatentable miner-
    als, created by nature without the assistance of man. The
    claimed isolated DNA molecules, which are truncations
    (with different ends) of the naturally occurring DNA
    found as part of the chromosome in nature, are not natu-
    rally produced without the intervention of man.
    I begin with the short isolated sequences such as
    those covered by claim 5 which is directed to “an isolated
    DNA having at least 15 nucleotides of the DNA of claim
    1.” This claim covers a sequence as short as 15 nucleo-
    tides and arguably as long as the entire gene. For this
    claim to be patent eligible, all of the sequences ranging
    from the 15 nucleotide sequence to the full gene must be
    patentable subject matter. The shorter isolated DNA
    sequences have a variety of applications and uses in
    isolation that are new and distinct as compared to the
    sequence as it occurs in nature. For example, these
    sequences can be used as primers in a diagnostic screen-
    ing process to detect gene mutations. These smaller
    isolated DNA sequences—including isolated radiolabeled
    sequences mirroring those on the chromosome—can also
    be used as the basis for probes. Naturally occurring DNA
    cannot do this. Unlike the isolated DNA, naturally occur-
    ring DNA simply does not have the requisite chemical and
    physical properties needed to perform these functions.
    The ability to use isolated DNA molecules as the basis
    for diagnostic genetic testing is clearly an “enlargement of
    11                       ASSOCIATION FOR MOLECULAR    v. PTO
    the range of . . . utility” as compared to nature. Funk
    Bros., 333 U.S. at 131. In Prometheus, the Supreme
    Court held that the claims at issue were not directed to
    patentable subject matter because they merely “set forth
    laws of nature—namely, relationships between concentra-
    tions of certain metabolites in the blood and the likelihood
    that a dosage of a thiopurine drug will prove ineffective or
    cause harm.” 132 S. Ct. at 1296-97. The claimed rela-
    tionship was “a consequence of the ways in which thio-
    purine compounds are metabolized by the body—entirely
    natural processes.” Id. at 1297.
    There is no suggestion that the human body naturally
    uses 15-mers as primers to synthesize DNA, or that the
    attendant process of “probing” a patient’s DNA to detect a
    mutation is somehow a natural law. The ability to use a
    short strand of DNA as a primer or probe to determine
    whether a patient has a mutation is a new and important
    utility substantially different from the role of that DNA as
    it occurs in nature. Indeed, many of the plaintiffs in this
    case submitted declarations indicating that they wanted
    to either offer such testing or receive such testing. Unlike
    Prometheus, the claims to short isolated strands of DNA
    are not directed to the relationship between the mutation
    and cancer, but rather to a new tool that can be used to
    determine if that relationship exists. The short isolated
    DNA sequences have markedly different properties which
    are directly responsible for their new and significant
    utility. Chakrabarty, 447 U.S. at 309-10. It is not the
    chemical change alone, but that change combined with
    the different and beneficial utility that leads me to con-
    clude that small isolated DNA fragments are patentable
    subject matter. Id. at 310.
    In fact, much of the dissent’s analysis with regard to
    the full gene would seem to support my conclusion that
    small isolated DNA molecules are directed to patent-
    ASSOCIATION FOR MOLECULAR   v. PTO                       12
    eligible subject matter. The dissent explains why the
    baseball bat is directed to patent eligible subject matter:
    “man has defined the parts that are to be retained and the
    parts that are to be discarded, and he has molded the
    retained portion into a product that bears little resem-
    blance to that which occurs naturally.” Dissent at 11-12.
    The exact same thing is true with regard to primer and
    probe claims. Man has whittled the chromosomal DNA
    molecule down to a 15 nucleotide sequence – defining the
    parts to be retained and discarded. 3 And the result is a
    product with a function (primer or probe) that is entirely
    different from the full gene from which it was obtained. 4
    I conclude that the small, isolated DNA molecules are an
    alteration of the natural product “with markedly different
    characteristics from any found in nature and one having
    the potential for significant utility.” 447 U.S. at 310.
    Turning now to the longer strands of isolated DNA,
    isolated strands which include most or all of the gene
    present a more difficult case. Some of the claims at issue,
    for example ’282 patent claim 5, are genus claims, drafted
    3     If adding functionality to a naturally occurring
    molecule, for example adding a lipid chain, is a creation of
    man then removing functionality, for example truncating
    a natural DNA sequence or protein to yield smaller mole-
    cules with new properties should also be. In either case,
    it is the intervention of man that created a new molecule.
    After all, the hand of man is just as apparent in the
    David, created by removing stone from a block of marble,
    as the ceiling of the Sistine Chapel, created by adding
    layers of paint to an existing structure.
    4    The dissent analogizes the full BRCA gene to a
    slab of marble found in the earth as distinct from the
    sculpture carved into it – which the dissent indicates
    would be worthy of intellectual property protection. If the
    multi-thousand nucleotide BRCA gene is the slab, isn’t
    the 15 nucleotide primer the sculpture?
    13                       ASSOCIATION FOR MOLECULAR   v. PTO
    broadly enough to include both short fragments as well as
    the entire isolated gene sequence. While I ultimately
    conclude that these longer isolated sequences, including
    the isolated gene sequence as a whole, are also patentable
    subject matter, I do so for a reason different than for the
    shorter sequences.
    All of the same structural arguments apply to any
    length of isolated DNA so, like the shorter strands, an
    isolated DNA coding for a gene does have a literal chemi-
    cal difference from the gene as it appears on the chromo-
    some. Unlike the shorter strands of isolated DNA, the
    chemical and structural differences in the isolated gene do
    not clearly lead to an “enlargement of the range of . . .
    utility” as compared to nature. Funk Bros., 333 U.S. at
    131. For example, the full length gene is too large to be
    used as a probe. See J.A. 4322 (a probe is a DNA molecule
    usually 100-1,000 bases long). Likewise, an entire iso-
    lated gene appears unsuitable for use as a primer in
    genetic screening for mutations in that same gene. See
    J.A. 4323 (Primers “are complementary to an exact loca-
    tion of a much larger target DNA molecule.”). The iso-
    lated full length gene does not clearly have a new utility
    and appears to simply serve the same ends devised by
    nature, namely to act as a gene encoding a protein se-
    quence.
    If I were deciding this case on a blank canvas, I might
    conclude that an isolated DNA sequence that includes
    most or all of a gene is not patentable subject matter. The
    scope of the law of nature/manifestation of nature excep-
    tion was certainly enlarged in Prometheus. But we do not
    decide this case on a blank canvas. Congress has, for
    centuries, authorized an expansive scope of patentable
    subject matter. Likewise, the United States Patent Office
    has allowed patents on isolated DNA sequences for dec-
    ades, and, more generally, has allowed patents on purified
    ASSOCIATION FOR MOLECULAR   v. PTO                     14
    natural products for centuries. There are now thousands
    of patents with claims to isolated DNA, and some un-
    known (but certainly large) number of patents to purified
    natural products or fragments thereof. 5 As I explain
    below, I believe we must be particularly wary of expand-
    ing the judicial exception to patentable subject matter
    where both settled expectations and extensive property
    rights are involved. 6
    III.
    For more than a decade the Patent Office’s policy has
    been that “[a]n isolated and purified DNA molecule that
    has the same sequence as a naturally occurring gene is
    eligible for a patent because . . . that DNA molecule does
    5   See, e.g., U.S. Patent 3,067,099 (claiming vanco-
    mycin, an antibiotic produced by bacteria found in soil)
    and U.S. Patent 4,552,701 (claiming a vancomycin frag-
    ment produced by removing a sugar unit). A natural
    product fragment, for example a naturally occurring
    antibiotic with a sugar moiety removed, is highly analo-
    gous to isolated DNA. In each case, the claimed molecule
    is a smaller fragment of a naturally occurring molecule,
    with some naturally occurring functionality removed. See
    U.S. Patent 4,552,701, col.3-4 (compare entry 2 with
    entries 10 and 13).
    6    My analysis of the claims at issue assumes that
    they do not include an isolated, full length chromosome. I
    do not believe that a claim to an entire chromosome, for
    example chromosome 17, is patentable subject matter.
    First, there is no indication that the chromosome in
    isolation has markedly different characteristics compared
    to the chromosome in nature. Second, unlike claims to
    isolated genes, there is no indication of either settled
    expectations or extensive property rights for claims to
    isolated chromosomes. This is undoubtedly due to the
    small number of chromosomes as compared to the number
    of genes.
    15                       ASSOCIATION FOR MOLECULAR    v. PTO
    not occur in that isolated form in nature . . . .” 66 Fed.
    Reg. 1092, 1093 (Jan. 5, 2001). I do not agree with the
    dissent’s characterization of the PTO position as perfunc-
    tory. The PTO concluded that isolated DNA is patentable
    because it is different from what is found in nature – the
    process of synthesizing it or isolating it changes it. While
    the PTO lacks substantive rule making authority, it is not
    without expertise in this area. The explicit statement of
    the Patent Office’s position on isolated DNA, however, is
    simply a continuation of a longstanding and consistent
    policy of allowing patents for isolated natural products.
    See id. (noting U.S. Patent 141,072, claiming “[y]east, free
    from organic germs of disease,” issued to Louis Pasteur in
    1873); cf. In re Bergstrom, 
    427 F.2d 1394
     (CCPA 1970)
    (isolated prostaglandins patentable). According to the
    Patent Office, isolated DNA is no different from the
    isolated natural products of Parke-Davis. See 66 Fed.
    Reg. at 1093 (quoting Parke-Davis).
    Even before the current guidelines formalized the
    Patent Office’s position, it granted patents to human
    genes in the early 1980s, and subsequently issued thou-
    sands of patents on “isolated DNA.” Majority at 54. In
    fact, claims similar to the ones at issue in this case have
    been the focal point of important litigation. For example,
    Amgen, Inc. v. Chugai Pharmaceutical Co., 
    927 F.2d 1200
    (Fed. Cir. 1991) involved a claim to “‘[a] purified and
    isolated DNA sequence consisting essentially of a DNA
    sequence encoding human erythropoietin.’” Id. at 1203-04
    (quoting U.S. Patent No. 4,703,008, claim 2). We affirmed
    that this claim was valid and infringed. Id. at 1219.
    Erythropoietin, also known as EPO, went on to become
    the biggest-selling biotechnology drug developed to that
    point, resulted in billions of dollars in sales, and ac-
    counted for over 50% of Amgen’s revenue in 1997. Amgen,
    Inc. v. Hoechst Marion Roussel, Inc., 
    126 F. Supp. 2d 69
    , 77
    ASSOCIATION FOR MOLECULAR   v. PTO                       16
    (D. Mass. 2001). Isolated DNA claims, at least in the case
    of Amgen, represent crucial and exceedingly valuable
    property rights.
    The settled expectations of the biotechnology industry
    – not to mention the thousands of issued patents – cannot
    be taken lightly and deserve deference. This outpouring
    of scientific creativity, spurred by the patent system,
    reflects a substantial investment of time and money by
    the biotechnology industry to obtain property rights
    related to DNA sequences. The type of fundamental
    alteration in the scope of patentable subject matter ar-
    gued in this case “risk[s] destroying the legitimate expec-
    tations of inventors in their property.” Festo Corp. v.
    Shoketsu Kinzoku Kogyo Kabushiki Co., 
    535 U.S. 722
    , 739
    (2002). I believe leaving intact the settled expectations of
    property owners is particularly important in light of the
    large number of property rights involved, both to isolated
    DNA and to purified natural products generally.
    The Supreme Court has warned that “courts must be
    cautious before adopting changes that disrupt the settled
    expectations of the inventing community.” Id. at 739.
    The settled expectations of the inventing community with
    respect to isolated DNA claims are built upon the broad
    language of the statute, judicial precedent, such as Parke-
    Davis and Merck, and the Patent Office’s longstanding
    policy and practice. Neither Funk Brothers nor Chakra-
    barty purported to overrule either the early cases or the
    Patent Office’s practice; indeed, as discussed supra, these
    cases weigh the same considerations as Parke-Davis and
    Merck. “‘To change so substantially the rules of the game
    now,’” after more than a century of practice, “‘could very
    well subvert the various balances the PTO sought to
    strike when issuing the numerous patents which have not
    yet expired and which would be affected by our decision.’”
    17                       ASSOCIATION FOR MOLECULAR   v. PTO
    Festo, 535 U.S. at 739 (quoting Warner-Jenkinson Co. v.
    Hilton Davis Chem. Co., 
    520 U.S. 17
    , 32 n.6 (1997)).
    Although the Patent Office has consistently followed
    the same policy for a decade (and arguably a century or
    more), the United States, as an amicus, now argues that
    the Patent Office’s published guidelines are incorrect and
    a misstatement of the law. In place of these guidelines,
    the government suggested that a “magic microscope”
    would provide a useful metaphor for guiding our section
    101 analysis. The magic microscope, however, would not
    see the claimed DNA molecules at issue in this case. An
    isolated DNA molecule has different chemical bonds as
    compared to the “unisolated” sequence in the chromosome
    (the ends are different). In short, the claimed molecules
    cannot be seen in nature through the magic microscope.
    While you may be able to see the order of DNA nucleo-
    tides in the chromosome, the isolated fragment of DNA is
    a different molecule. Creating the claimed isolated DNA
    sequences therefore results in a distinctly unnatural
    molecule. 7 Even the dissent agrees that the isolated DNA
    molecules at issue require cleaving chemical bonds,
    though it disputes the importance of the resulting distinct
    7   This also illustrates why the government’s analo-
    gies to situations dealing with elements, for example
    lithium, are inapposite. Even assuming the government’s
    contention that lithium does not currently exist in iso-
    lated form in nature, it is nevertheless clear that elemen-
    tal lithium, a basic building block provided by nature, at
    some point must have reacted with, e.g., water to form the
    naturally occurring lithium salts. In contrast, an isolated
    DNA sequence did not necessarily exist before reacting
    further to produce the corresponding naturally occurring
    chromosomal DNA. Unlike a lithium salt, the chromo-
    some does not imply that an isolated DNA molecule of 15
    nucleotides – or even a gene – necessarily previously
    existed as an isolated molecule in nature.
    ASSOCIATION FOR MOLECULAR   v. PTO                       18
    “‘molecular species.’” Dissent at 7 (quoting Linus Pauling,
    The Nature of the Chemical Bond 6 (3d ed. 1960)).
    The dissent claims that the Patent Office’s past views
    are “substantially undermined by the position the gov-
    ernment has taken in this case.” Dissent at 20. The
    Patent Office’s prior practice, however, is particularly
    important since it resulted in a large number of property
    rights over the past decades. If the government decided
    to change course in the Patent Office, and decline to issue
    new patents to isolated genes, it would not impact these
    existing property rights. This, however, is not what the
    government argues in this case. Instead the government
    argues for an entirely different interpretation of the law
    that would destroy existing property rights. Although the
    dissent points out that Chakrabarty overturned the
    Patent Office’s practice of denying patents to microorgan-
    isms, there is a clear difference between allowing addi-
    tional patent protection where none previously existed,
    and denying patent protection decades (or centuries) after
    the fact, thereby eliminating a large number of property
    rights. Chakrabarty, consistent with the broad language
    of the statute, allowed additional patents where none
    previously existed. In contrast, the government proposes
    to destroy existing property rights based on a judge made
    exception to that same broad language. This is a dra-
    matic step that I believe is best left to the Congress.
    Nevertheless, the government claims that “this is a
    pure question of law” and that we can therefore feel free
    to ignore the years of Patent Office practice and the
    accompanying expectations that practice created within
    the industry. The government argues that we should not
    defer to the broad language (all but unchanged since
    1793) provided by Congress in the patent statute, or allow
    Congress to decide whether it is necessary to correct the
    Patent Office’s practice through legislation. It is tempting
    19                       ASSOCIATION FOR MOLECULAR   v. PTO
    to use our judicial power in this fashion, especially when
    the patents in question raise substantial moral and
    ethical issues related to awarding a property right to
    isolated portions of human DNA – the very thing that
    makes us humans, and not chimpanzees.
    The invitation is tempting, but I decline the opportu-
    nity to act where Congress has chosen not to. Congress at
    least implicitly approved of the Patent Office’s policy of
    awarding patents on genes and DNA sequences. For
    example, Congress included, as part of the Patent Office’s
    appropriations, language affirming the Patent Office’s
    interpretation of section 101 to prohibit patents on human
    organisms. Consolidated Appropriations Act, 2004, Pub.
    L. No. 108-199, § 634, 118 Stat. 3, 101. Although Con-
    gress was aware “that there are many institutions . . .
    that have extensive patents on human genes,” 149 Cong.
    Rec. H7248, H7274, it explicitly declined to implement
    legislation to “affect any of those current existing pat-
    ents.” 149 Cong. Rec. E2417-01. To the contrary, it made
    clear that the language related to “human organisms” was
    not intended to change the Patent Office’s policy with
    respect to claims to genes, stem cells, or other similar
    inventions. 8 Far from oblivious to the patenting of genes,
    Congress introduced and declined to pass several bills
    8   “What I want to point out is that the U.S. Patent
    Office has already issued patents on genes, stem cells,
    animals with human genes, and a host of non-biologic
    products used by humans, but it has not issued patents on
    claims directed to human organisms, including human
    embryos and fetuses. My amendment would not affect the
    former, but would simply affirm the latter.” 149 Cong.
    Rec. E2417-01 (emphasis added); see also 157 Cong. Rec.
    E1177-04 (resubmitting this testimony in the context of
    the current patent reform legislation).
    ASSOCIATION FOR MOLECULAR   v. PTO                      20
    which would put a moratorium on gene patents, 9 author-
    ize funding for the study of whether genes ought to be
    patentable, 10 and exempt from patent infringement
    anyone who uses patented genes for non-commercial
    research purposes or medical practitioners who use ge-
    netic diagnostic tests. 11 Congress is obviously aware of
    the issues presented in this case and I believe “[a]ny re-
    calibration of the standard of [patentability] remains in
    its hands.” Microsoft Corp. v. i4i Ltd., 
    131 S. Ct. 2238
    ,
    2252 (2011).
    The judiciary cannot engage in an ad hoc innovation-
    based analysis, which is why the exceptions to patentabil-
    ity apply only to the clearest cases: a new mineral discov-
    ered in the earth, or a new plant found in the wild, or
    E=mc2, or the law of gravity. It is Congress, with “the
    constitutional authority and the institutional ability to
    accommodate fully the varied permutations of competing
    interests that are inevitably implicated by such new
    technology,” Sony Corp. of America v. Universal City
    Studios, Inc., 
    464 U.S. 417
    , 431 (1984), who must decide
    whether it is necessary to change the scope of section 101
    9   At least one bill was introduced in Congress to put
    a moratorium on patents to human genes or gene se-
    quences. See, e.g., The Animal and Gene Patent Morato-
    rium Bill (S.387 1993).
    10  The Genomic Science and Technology Innovation
    Act of 2002 (H.R. 3966).
    11   The Genomic Research and Diagnostic Accessibil-
    ity Act of 2002 (H.R. 3967). As the bill’s sponsor ex-
    plained: “It is important to note that this section would
    not overturn the commercial rights of patent holders. If a
    research [organization] utilizing the exemption makes a
    commercially viable finding, he or she would still have to
    negotiate any rights to market the new discovery with the
    patent holder.” 148 Cong. Rec. E353-03.
    21                       ASSOCIATION FOR MOLECULAR    v. PTO
    to exclude the kind of isolated DNA claims at issue here.
    It is not clear to me that Chakrabarty, Funk Brothers, or
    Prometheus leads inexorably to the conclusion that iso-
    lated DNA molecules are not patentable subject matter. I
    decline the invitation to broaden the law of nature excep-
    tion.
    Given the complicated technology and conflicting in-
    centives at issue here, any change must come from Con-
    gress. See Gottschalk v. Benson, 
    409 U.S. 63
    , 72-73 (1972)
    (A section 101 analysis raises “considerable problems . . .
    which only committees of Congress can manage, for broad
    powers of investigation are needed, including hearings
    which canvass the wide variety of views which those
    operating in this field entertain. The technological prob-
    lems tendered [by the parties] . . . indicate to us that
    considered action by the Congress is needed.”).
    IV.
    “The rule that the discovery of a law of nature cannot
    be patented rests . . . on the . . . fundamental understand-
    ing that they are not the kind of ‘discoveries’ that the
    statute was enacted to protect.” Flook, 437 U.S. at 593.
    Is an isolated kidney patentable? Probably not, but as far
    as I can tell nobody ever thought isolating organs from
    someone’s body was the kind of discovery “that the statute
    was enacted to protect.” In contrast, purifying or isolating
    natural products has historically been exactly the kind of
    discovery protected by the patent statutes. There is a
    century-long history of affirming patent protection for
    isolated and purified biological products ranging from
    hormones to vitamins to proteins to antibiotics. These
    inventions must have seemed miraculous at the time,
    providing previously unknown therapeutic options to
    treat sickness. The fact that these molecules might have
    existed in nature did not foreclose patent protection in
    ASSOCIATION FOR MOLECULAR   v. PTO                     22
    view of the extraordinary benefits accessible to man after
    isolation.
    The Patent Office has, for more than a decade, af-
    firmatively stated its belief that isolated DNA is pat-
    entable for the same reasons as isolated vitamins or
    hormones. There is no indication from Congress that this
    view is wrong; to the contrary, it appears Congress also
    believes DNA is patentable. This long-term policy of
    protecting isolated DNA molecules has resulted in an
    explosion of innovation in the biotechnology industry, an
    industry which, unlike the financial services industry or
    even the software industry, depends on patents to sur-
    vive. Holding isolated DNA not patentable would destroy
    long settled industry expectations for no reason other
    than a gut feeling that DNA is too close to nature to be
    patentable, an arbitrary decision based on a judge-made
    exception. I believe that isolated DNA fragments, which
    have both chemical changes from the naturally occurring
    genomic DNA as well as new utility, are “the kind of
    ‘discoveries’ that the statute was enacted to protect.” I
    therefore decline to extend the “laws of nature” exception
    to include isolated DNA sequences.
    This case typifies an observation by the late Chief
    Judge Markey, our first Chief Judge, that “[o]nly God
    works from nothing. Men must work with old elements.”
    Fromson v. Advance Offset Plate, Inc., 
    755 F.2d 1549
    ,
    1556 n.3 (Fed. Cir. 1985) (quotation, citations omitted).
    Human DNA is, for better or worse, one of the old ele-
    ments bequeathed to men to use in their work. The
    patents in this case revealed a new molecular understand-
    ing about ourselves; “the inventions most benefiting
    mankind are those that ‘push back the frontiers of chem-
    istry, physics, and the like.’” Chakrabarty, 447 U.S. at
    316 (quoting Great A.&P. Tea Co. v. Supermarket Corp.,
    
    340 U.S. 147
    , 154 (1950)). We cannot, after decades of
    23                       ASSOCIATION FOR MOLECULAR    v. PTO
    patents and judicial precedent, now call human DNA fruit
    from the poisonous tree, and punish those inquisitive
    enough to investigate, isolate, and patent it. “Our task
    . . . is the narrow one of determining what Congress
    meant by the words it used in the statute; once that is
    done our powers are exhausted.” Id. at 318. This inquiry
    does not have moral, ethical, or theological components.
    Cf. id. at 316-17 (“[W]e are without competence to enter-
    tain” arguments about “the grave risks” generated by
    genetic research.). “The choice we are urged to make is a
    matter of high policy for resolution within the legislative
    process after the kind of investigation, examination, and
    study that legislative bodies can provide and courts
    cannot.” Id. at 317. The patents in this case might well
    deserve to be excluded from the patent system, but that is
    a debate for Congress to resolve. I will not strip an entire
    industry of the property rights it has invested in, earned,
    and owned for decades unchallenged under the facts of
    this case.
    United States Court of Appeals
    for the Federal Circuit
    __________________________
    THE ASSOCIATION FOR MOLECULAR
    PATHOLOGY, THE AMERICAN COLLEGE OF
    MEDICAL GENETICS, THE AMERICAN SOCIETY
    FOR CLINICAL PATHOLOGY, THE COLLEGE OF
    AMERICAN PATHOLOGISTS, HAIG KAZAZIAN,
    MD, ARUPA GANGULY, PHD, WENDY CHUNG, MD,
    PHD, HARRY OSTRER, MD, DAVID LEDBETTER,
    PHD, STEPHEN WARREN, PHD, ELLEN
    MATLOFF, M.S., ELSA REICH, M.S., BREAST
    CANCER ACTION, BOSTON WOMEN’S HEALTH
    BOOK COLLECTIVE, LISBETH CERIANI, RUNI
    LIMARY, GENAE GIRARD, PATRICE FORTUNE,
    VICKY THOMASON, AND KATHLEEN RAKER,
    Plaintiffs-Appellees,
    v.
    UNITED STATES PATENT AND TRADEMARK
    OFFICE,
    Defendant,
    and
    MYRIAD GENETICS, INC.,
    Defendant-Appellant,
    and
    LORRIS BETZ, ROGER BOYER, JACK BRITTAIN,
    ARNOLD B. COMBE, RAYMOND GESTELAND,
    JAMES U. JENSEN, JOHN KENDALL MORRIS,
    THOMAS PARKS, DAVID W. PERSHING, AND
    MICHAEL K. YOUNG,
    ASSOCIATION FOR MOLECULAR   v. PTO                        2
    IN THEIR OFFICIAL CAPACITY AS DIRECTORS OF THE
    UNIVERSITY OF UTAH RESEARCH FOUNDATION,
    Defendants-Appellants.
    __________________________
    2010-1406
    __________________________
    Appeal from the United States District Court for the
    Southern District of New York in case No. 09-CV-4515,
    Senior Judge Robert W. Sweet.
    __________________________
    BRYSON, Circuit Judge, concurring in part and dissenting
    in part:
    I concur with the portions of this court’s judgment
    that are directed to standing, the patentability of the
    cDNA claims, and the patentability of the method claims.
    I respectfully dissent from the court’s holding that Myr-
    iad’s BRCA gene claims and its claims to gene fragments
    are patent-eligible. In my view, those claims are not
    directed to patentable subject matter, and the court’s
    decision, if sustained, will likely have broad consequences,
    such as preempting methods for whole-genome sequenc-
    ing, even though Myriad’s contribution to the field is not
    remotely consonant with such effects.
    In its simplest form, the question in this case is
    whether an individual can obtain patent rights to a hu-
    man gene. From a common-sense point of view, most
    observers would answer, “Of course not. Patents are for
    inventions. A human gene is not an invention.” The
    essence of Myriad’s argument in this case is to say that it
    has not patented a human gene, but something quite
    different—an isolated human gene, which differs from a
    3                        ASSOCIATION FOR MOLECULAR    v. PTO
    native gene because the process of extracting it results in
    changes in its molecular structure (although not in its
    genetic code).    We are therefore required to decide
    whether the process of isolating genetic material from a
    human DNA molecule makes the isolated genetic mate-
    rial a patentable invention. The court concludes that it
    does; I conclude that it does not.
    At the outset, it is important to identify the inventive
    contribution underlying Myriad’s patents. Myriad was
    not the first to map a BRCA gene to its chromosomal
    location. That discovery was made by a team of research-
    ers led by Dr. Mary-Claire King. See Jeff M. Hall et al.,
    Linkage of Early-Onset Familial Breast Cancer to Chro-
    mosome 17q21, 250 Science 1684 (1990). And Myriad did
    not invent a new method of nucleotide sequencing. In-
    stead, it applied known sequencing techniques to identify
    the nucleotide order of the BRCA genes. 1 Myriad’s dis-
    covery of those sequences entailed difficult work, and the
    identified sequences have had important applications in
    the fight against breast cancer. But the discovery of the
    sequences is an unprotectable fact, just like Dr. King’s
    discovery of the chromosomal location of the BRCA1 gene.
    Of course, Myriad is free to patent applications of its
    discovery. As the first party with knowledge of the se-
    quences, Myriad was in an excellent position to claim
    applications of that knowledge. Many of its unchallenged
    claims are limited to such applications. See, e.g., ’441
    patent, claim 21; ’492 patent, claim 22; ’282 patent, claim
    1   There is some dispute over whether other inven-
    tors helped Myriad discover the BRCA sequences or
    discovered the BRCA2 sequence before Myriad. Because
    those disputes are irrelevant to the question of patentable
    subject matter, I refer to the discovery of the BRCA
    sequences as Myriad’s work.
    ASSOCIATION FOR MOLECULAR    v. PTO                          4
    9. Yet some of Myriad’s challenged composition claims
    effectively preempt any attempt to sequence the BRCA
    genes, including whole-genome sequencing. In my view,
    those claims encompass unpatentable subject matter, and
    a contrary ruling is likely to have substantial adverse
    effects on research and treatment in this important field.
    I
    As the majority and concurring opinions explain, the
    DNA claims at issue in this case fall into three categories:
    claims that cover the isolated BRCA genes (claim 1 of the
    ’282 patent, claim 1 of the ’473 patent, and claims 1 and 6
    of the ’492 patent); claims that cover only the BRCA
    cDNA (claims 2 and 7 of the ’282 patent and claim 7 of the
    ’492 patent); and claims that cover portions of the BRCA
    genes and cDNA as small as 15 nucleotides long (claims 5
    and 6 of the ’282 patent). I first address the claims to the
    BRCA genes.
    A
    In the seminal case of Diamond v. Chakrabarty, 
    447 U.S. 303
     (1980), the Supreme Court held that an artificial
    life form could be patented. In the course of its opinion,
    and critically for purposes of its reasoning, the Court
    stated that not all living things or other items found in
    nature were subject to patenting. The Court explained
    that although the language of section 101 of the Patent
    Act is broad, it is not the case that it “has no limits or that
    it embraces every discovery.” Id. at 309. The Court then
    set forth the general proposition that “laws of nature,
    physical phenomena, and abstract ideas have been held
    not patentable.” Id. As examples, the Court noted that “a
    new mineral discovered in the earth or a new plant found
    in the wild is not patentable subject matter.” Thus, even
    5                         ASSOCIATION FOR MOLECULAR    v. PTO
    though a mineral or a plant is a “composition of matter,”
    and could be viewed as falling within a broad construction
    of section 101, the Court explained that those “manifesta-
    tions of . . . nature” are not patentable subject matter, but
    are “free to all men and reserved exclusively to none.” Id.,
    quoting Funk Bros. Seed Co. v. Kalo Inoculant Co., 
    333 U.S. 127
    , 130 (1948); see also Bilski v. Kappos, 
    130 S. Ct. 3218
    , 3225 (2010).
    The Court in Chakrabarty held the artificial life form
    at issue in that case to be patentable because the claim
    was “not to a hitherto unknown natural phenomenon, but
    to a nonnaturally occurring manufacture or composition
    of matter—a product of human ingenuity ‘having a dis-
    tinctive name, character [and] use.’” 447 U.S. at 309-10,
    quoting Hartranft v. Wiegmann, 
    121 U.S. 609
    , 615 (1887).
    In distinguishing between naturally occurring substances
    and nonnaturally occurring manufactures, the Court
    relied heavily on its earlier decision in Funk Brothers, in
    which the inventor discovered that certain useful bacte-
    rial strains did not exert an inhibitive effect on one an-
    other. Based on that discovery, the inventor obtained a
    patent on a mixed culture of those non-inhibitive strains.
    The Supreme Court held the product unpatentable,
    however, because the bacteria remained structurally and
    functionally the same as in their natural state. Funk
    Bros., 333 U.S. at 131. By contrast, because Chakrabarty
    had produced “a new bacterium with markedly different
    characteristics from any found in nature and one having
    the potential for significant utility,” the Court held Chak-
    rabarty’s invention to be patentable. Chakrabarty, 447
    U.S. at 310.
    ASSOCIATION FOR MOLECULAR   v. PTO                         6
    B
    Myriad’s claims to the isolated BRCA genes seem to
    me to fall clearly on the “unpatentable” side of the line the
    Court drew in Chakrabarty. Myriad is claiming the genes
    themselves, which appear in nature on the chromosomes
    of living human beings. The only material change made
    to those genes from their natural state is the change that
    is necessarily incidental to the extraction of the genes
    from the environment in which they are found in nature.
    While the process of extraction is no doubt difficult, and
    may itself be patentable, the isolated genes are not mate-
    rially different from the native genes. In this respect, the
    genes are analogous to the “new mineral discovered in the
    earth,” or the “new plant found in the wild” that the
    Supreme Court referred to in Chakrabarty. It may be
    very difficult to extract the newly found mineral or to
    find, extract, and propagate the newly discovered plant.
    But that does not make those naturally occurring items
    the products of invention.
    The same is true for human genes. Like some miner-
    als, they are hard to extract from their natural setting.
    Also like minerals, they can be used for purposes that
    would be infeasible if they remained in their natural
    setting. And the process of extracting minerals, or taking
    cuttings from wild plants, like the process of isolating
    genetic material, can result in some physical or chemical
    changes to the natural substance. But such changes do
    not make extracted minerals or plant cuttings patentable,
    and they should not have that effect for isolated genes. In
    each case, merely isolating the products of nature by
    extracting them from their natural location and making
    those alterations that are attendant to their extraction
    does not give the extractor the right to patent the prod-
    ucts themselves.
    7                        ASSOCIATION FOR MOLECULAR   v. PTO
    The majority characterizes the isolated genes as new
    molecules and considers them different substances from
    the corresponding native DNA. 2 Because the native
    BRCA genes are chemically bonded to other genes and
    histone proteins, the majority concludes that cleaving
    those bonds to isolate the BRCA genes turns the isolated
    genes into “different materials.” Yet there is no magic to
    a chemical bond that requires us to recognize a new
    product when a chemical bond is created or broken, but
    not when other atomic or molecular forces are altered. 3 A
    chemical bond is merely a force between two atoms or
    groups of atoms strong enough “to make it convenient for
    the chemist to consider [the aggregate] as an independent
    molecular species.” Linus Pauling, The Nature of the
    Chemical Bond 6 (3d ed. 1960). Weaker interatomic
    forces will be broken when, for example, a dirty diamond
    is cleaned with water or another solvent, but that does
    not make the clean diamond a human-made invention.
    See Am. Fruit Growers, Inc. v. Brogdex Co., 
    283 U.S. 1
    , 12
    2   Although I recognize that Judge Lourie and Judge
    Moore, while reaching the same ultimate conclusions,
    have taken analytical paths that differ in some respects,
    for convenience I will refer to Judge Lourie’s opinion as
    the majority opinion and Judge Moore’s opinion as the
    concurring opinion.
    3   The majority characterizes the question in this
    case as turning on the breaking of covalent bonds linking
    the BRCA genes to the rest of the DNA in chromosomes
    13 and 17, but its analysis appears to place patentable
    weight on the breaking of other chemical bonds, such as
    the hydrogen bonds that are broken when separating
    DNA from histones or—in an example unrelated to this
    case—the ionic bonds that are broken when lithium is
    derived from a salt. It is difficult to see why differences
    between types of chemical bonds should matter for pat-
    entability purposes, and I see little support for such a
    distinction in the governing precedents.
    ASSOCIATION FOR MOLECULAR   v. PTO                         8
    (1931) (cleaning a shell by acid and then grinding off a
    layer with an emery wheel did not convert it into a differ-
    ent product). Nor should it make a difference for pur-
    poses of patentability if the portion of a wild plant that is
    collected for purposes of later regeneration is separated
    from the original plant by chemical means or by scissors.
    If the changes in the DNA molecule that occur as part
    of the process of isolation render the gene claims pat-
    entable, the same analysis would seem to apply to chemi-
    cal elements that do not appear in their atomic form in
    nature. For example, isolated lithium does not occur
    naturally because it reacts with air and water and thus is
    found in nature only as part of a chemical compound,
    ionically bound to other elements. Robert E. Krebs, The
    History and Use of Our Earth’s Chemical Elements 48 (2d
    ed. 2006). Once isolated, lithium has many industrial
    applications, and in order to isolate lithium, it is neces-
    sary to break ionic bonds in the lithium compounds that
    are found in nature. But it seems plain that elemental
    lithium (like other elements) would not be patentable
    subject matter, even if it could only be extracted from
    nature through an isolation process.
    The principles underlying that analysis apply to ge-
    netic material as well. In order to isolate the BRCA gene,
    it is necessary to break chemical bonds that hold the gene
    in its place in the body, but the genetic coding sequence
    that is the subject of each of the BRCA gene claims re-
    mains the same whether the gene is in the body or iso-
    lated. If we are to apply the conventional nomenclature of
    any field to determine whether Myriad’s isolated DNA
    claims are “new,” it would seem to make more sense to
    look to genetics, which provides the language of the
    claims, than to chemistry. Aside from Myriad’s cDNA
    claims, its composition claims are not defined by any
    9                        ASSOCIATION FOR MOLECULAR   v. PTO
    particular chemical formula. For example, claim 1 of the
    ’282 patent covers all isolated DNAs coding for the
    BRCA1 protein, with the protein being defined by the
    amino acid sequence encoded by the naturally occurring
    BRCA1 gene. From a molecular perspective, that claim
    covers a truly immense range of substances from the
    cDNA that is 5,914 nucleotides long to the isolated gene
    that contains more than 120,000 nucleotides. And the
    patent does not define the upper end of that range be-
    cause the patent does not identify a unique nucleotide
    sequence for the 120,000-nucleotide-long isolated BRCA1
    gene. Instead, the patent contains a sequence that is just
    24,000 nucleotides long with numerous gaps denoted
    “vvvvvvvvvvvvv.” ’282 patent, fig. 10. An almost incalcu-
    lably large number of new molecules could be created by
    filling in those gaps with almost any nucleotide sequence,
    and all of those molecules would fall within the scope of
    claim 1. Included in that set are many important molecu-
    lar variations to the BRCA1 gene that Myriad had not yet
    discovered and could not have chemically described. Yet
    those molecules would share only one unifying character-
    istic: each would code for the same protein as the natu-
    rally occurring BRCA1 gene.
    From a genetic perspective, that claim covers one
    “composition of matter”—the BRCA1 gene. The isolated
    BRCA genes are identical to the BRCA genes found on
    chromosomes 13 and 17. They have the same sequence,
    they code for the same proteins, and they represent the
    same units of heredity. It is true that the claimed mole-
    cules have been cleaved and that they possess terminal
    groups that differ from those found on naturally occurring
    genes. The majority attaches significance to those facts.
    But the function of the isolated DNA molecules is attrib-
    utable not to the nature of the isolation process or to the
    identity of the terminal groups on the molecules; the
    ASSOCIATION FOR MOLECULAR   v. PTO                       10
    function of the claimed molecules is dictated by the nu-
    cleotide sequence of the gene—a sequence that is deter-
    mined by nature and that appears in nature exactly as it
    appears in the claimed isolated DNA. During the tran-
    scription phase of protein synthesis, the BRCA genes are
    separated from chromosomal proteins. The transcription
    process then proceeds from a starting point called the
    promoter to a stopping point often called the terminator.
    James D. Watson et al., Molecular Biology of the Gene
    382, 394-96 (6th ed. 2008). The only difference between
    the naturally occurring BRCA genes during transcription
    and the claimed isolated DNA is that the claimed genes
    have been isolated according to nature’s predefined
    boundaries, i.e., at points that preserve the ability of the
    gene to express the protein for which it is coded.
    In that respect, extracting a gene is akin to snapping
    a leaf from a tree. Like a gene, a leaf has a natural start-
    ing and stopping point. It buds during spring from the
    same place that it breaks off and falls during autumn.
    Yet prematurely plucking the leaf would not turn it into a
    human-made invention. See Intervet Inc. v. Merial Ltd.,
    
    617 F.3d 1282
    , 1295 (Fed. Cir. 2010) (Dyk, J., concurring
    in part and dissenting in part). That would remain true if
    there were minor differences between the plucked leaf
    and the fallen autumn leaf, unless those differences
    imparted “markedly different characteristics” to the
    plucked leaf. Chakrabarty, 447 U.S. at 310.
    Another example underscores the problem with char-
    acterizing the isolated gene as a patentable invention. A
    human kidney is a product of nature; it does not become a
    patentable invention when it is removed from the body,
    even if the patentee has developed an improved procedure
    for extracting the kidney, and even if the improved proce-
    dure results in some physical or chemical changes to the
    11                        ASSOCIATION FOR MOLECULAR    v. PTO
    kidney at the points where the kidney was attached to the
    host body. But if that is so, then why should an isolated
    gene be treated differently for purposes of section 101?
    While the isolation of a gene involves the alteration of a
    single molecule, it is difficult to accept that it should
    make a difference, for purposes of patentability, whether
    the isolated substance is part of a single molecule, as in
    the case of the BRCA genes, or part of a very large aggre-
    gation of molecules, as in the case of a kidney.
    Both the majority and the concurring opinions attach
    significant weight to the fact that the claimed coding
    portions of the native BRCA genes are part of a much
    larger molecule and that the isolated BRCA genes, being
    smaller molecules extracted from the larger one, are
    therefore man-made inventions. But to argue that the
    isolated BRCA gene is patentable because in its native
    environment it is part of a much larger structure is no
    more persuasive than arguing that although an atom may
    not be patentable, a subatomic particle is patentable
    because it was previously part of a larger structure, or
    that while a tree is not patentable, a limb of the tree
    becomes a patentable invention when it is removed from
    the tree.
    Of course, it is an oversimplification to say that some-
    thing that can be characterized as “isolated” or “ex-
    tracted” from its natural setting always remains a natural
    product and is not patentable. One could say, for exam-
    ple, that a baseball bat is “extracted” or “isolated” from an
    ash tree, but in that case the process of “extracting” the
    baseball bat necessarily changes the nature, form, and
    use of the ash tree and thus results in a manmade manu-
    facture, not a naturally occurring product. In that set-
    ting, man has defined the parts that are to be retained
    and the parts that are to be discarded, and he has molded
    ASSOCIATION FOR MOLECULAR   v. PTO                        12
    the retained portion into a product that bears little re-
    semblance to that which occurs naturally. The result of
    the process of selection is a product with a function that is
    entirely different from that of the raw material from
    which it was obtained. In the case of the BRCA genes, by
    contrast, nature has defined the genes as independent
    entities by virtue of their capacity for protein synthesis
    and, ultimately, trait inheritance. Biochemists extract
    the target genes along lines defined by nature so as to
    preserve the structure and function that the gene pos-
    sessed in its natural environment. In such a case, the
    extraction of a product in a manner that retains the
    character and function of the product as found in nature
    does not result in the creation of a human invention. 4
    That principle was captured by the Supreme Court’s
    statement in Chakrabarty that the invention in that case
    was not to “a hitherto unknown natural phenomenon, but
    to a nonnaturally occurring manufacture or composition
    of matter ‘having a distinctive name, character [and]
    use.’” 447 U.S. at 309-10.
    Cases involving the “purification” of a natural sub-
    stance employ similar analysis. Our predecessor court
    recognized that merely purifying a naturally occurring
    substance does not render the substance patentable
    unless it results in a marked change in functionality. In
    re Merz, 
    97 F.2d 599
    , 601 (CCPA 1938) (holding that there
    was no right to a patent on a purer version of ultrama-
    rine, but recognizing that if a claimed article is “of such
    4   By analogy, extracting a slab of marble from the
    earth does not give rise to protectable intellectual prop-
    erty rights, but “extracting” a piece of sculpture from that
    slab of marble does. In the case of the BRCA gene claims,
    what Myriad has claimed is more akin to the slab of
    marble found in the earth than to the sculpture carved
    from it after its extraction.
    13                        ASSOCIATION FOR MOLECULAR     v. PTO
    purity that it differs not only in degree but in kind it may
    be patentable”); see also In re King, 
    107 F.2d 618
    , 620
    (CCPA 1939) (same, for purified vitamin C); In re Marden,
    
    47 F.2d 958
    , 959 (CCPA 1931) (same, for purified vana-
    dium); Gen. Elec. Co. v. DeForest Radio Co., 
    28 F.2d 641
    ,
    643 (3d Cir. 1928) (same, for purified tungsten). On the
    other hand, the purified natural substance is patentable if
    the “purification” results in a product with such distinct
    characteristics that it becomes “for every practical pur-
    pose a new thing commercially and therapeutically.”
    Parke-Davis & Co. v. H.K. Mulford Co., 
    189 F. 95
    , 103
    (C.C.S.D.N.Y. 1911); see also Merck & Co. v. Olin Mathi-
    eson Chem. Corp., 
    253 F.2d 156
    , 161-64 (4th Cir. 1958)
    (holding that a purified composition of vitamin B-12 was
    patentable because the purification process resulted in a
    product that was therapeutically effective, whereas the
    natural form was not).
    In sum, the test employed by the Supreme Court in
    Chakrabarty requires us to focus on two things: (1) the
    similarity in structure between what is claimed and what
    is found in nature and (2) the similarity in utility between
    what is claimed and what is found in nature. What is
    claimed in the BRCA genes is the genetic coding material;
    that material is the same, structurally and functionally,
    in both the native gene and the isolated form of the gene.
    The structural differences between the claimed “iso-
    lated” genes and the corresponding portion of the native
    genes are irrelevant to the claim limitations, to the func-
    tioning of the genes, and to their utility in their isolated
    form. The use to which the genetic material can be put,
    i.e., determining its sequence in a clinical setting, is not a
    new use; it is only a consequence of possession. In order
    to sequence an isolated gene, each gene must function in
    the same manner in the laboratory as it does in the
    ASSOCIATION FOR MOLECULAR   v. PTO                       14
    human body. Indeed, that identity of function in the
    isolated gene is the key to its value. The naturally occur-
    ring genetic material thus has not been altered in a way
    that would matter under the standard set forth in Chak-
    rabarty. For that reason, the isolation of the naturally
    occurring genetic material does not make the claims to
    the isolated BRCA genes patent-eligible.
    The Supreme Court’s recent decision in Mayo Col-
    laborative Services v. Prometheus Laboratories, Inc., 
    132 S. Ct. 1289
    , 1293 (2012), does not decide this case, but the
    Court’s analysis is nonetheless instructive. In Mayo,
    which involved method claims, the representative claim
    involved the steps of administering a drug to a subject,
    determining a metabolite concentration in the subject’s
    blood, and inferring the need for a change in dosage based
    on that metabolite concentration. Id. at 1295. The Court
    found that the method was not directed to patent-eligible
    subject matter because it contributed nothing “inventive”
    to the law of nature that lay at the heart of the claimed
    invention, i.e., “the relationships between the concentra-
    tion in the blood of certain thiopurine metabolites and the
    likelihood that the drug dosage will be ineffective or
    induce harmful side-effects.” Id. at 1294. The Court
    examined “whether the claims do significantly more than
    simply describe these natural relations” and whether the
    “claims add enough to their statements of the correlations
    to allow the processes they described to qualify as patent-
    eligible processes that apply natural laws.” Id. at 1297
    (emphasis in original). In concluding that the claims did
    not add “enough” to the natural laws, the Court was
    particularly persuaded by the fact that “the steps of the
    claimed processes . . . involve well-understood, routine,
    conventional activity previously engaged in by research-
    ers in the field.” Id. at 1294.
    15                        ASSOCIATION FOR MOLECULAR    v. PTO
    Just as a patent involving a law of nature must have
    an “inventive concept” that does “significantly more than
    simply describe . . . natural relations,” Mayo, 132 S. Ct. at
    1294, 1297, a patent involving a product of nature should
    have an inventive concept that involves more than merely
    incidental changes to the naturally occurring product. In
    cases such as this one, in which the applicant claims a
    composition of matter that is nearly identical to a product
    of nature, it is appropriate to ask whether the applicant
    has done “enough” to distinguish his alleged invention
    from the similar product of nature. Has the applicant
    made an “inventive” contribution to the product of na-
    ture? Does the claimed composition involve more than
    “well-understood, routine, conventional” elements? Here,
    the answer to those questions is no.
    Neither isolation of the naturally occurring material
    nor the resulting breaking of covalent bonds makes the
    claimed molecules patentable. We have previously stated
    that “isolation of interesting compounds is a mainstay of
    the chemist’s art,” and that “[i]f it is known how to per-
    form such an isolation doing so ‘is likely the product not of
    innovation but of ordinary skill and common sense.’”
    Aventis Pharma Deutschland GmbH v. Lupin, Ltd., 
    499 F.3d 1293
    , 1302 (Fed. Cir. 2007), quoting KSR Int’l Co. v.
    Teleflex, Inc., 
    550 U.S. 398
    , 421 (2007). Similarly, the
    structural changes ancillary to the isolation of the gene do
    not render these claims patentable. The cleaving of
    covalent bonds incident to isolation is itself not inventive,
    and the fact that the cleaved molecules have terminal
    groups that differ from the naturally occurring nucleotide
    sequences does nothing to add any inventive character to
    the claimed molecules. The functional portion of the
    composition—the nucleotide sequence—remains identical
    to that of the naturally occurring gene.
    ASSOCIATION FOR MOLECULAR   v. PTO                       16
    The majority suggests that I have “focus[ed] not on
    the differences between isolated and native DNAs, but on
    one similarity: their informational content.” In light of
    Mayo, that approach seems appropriate. The informa-
    tional content of the nucleotide sequences is the critical
    aspect of these molecules; the terminal groups added to
    the molecules when the covalent bonds are broken—to
    which the majority and concurring opinions attribute
    such significance—are not even mentioned in the claims.
    The nucleotide sequences of the claimed molecules are the
    same as the nucleotide sequences found in naturally
    occurring human genes. In my view, that structural
    similarity dwarfs the significance of the structural differ-
    ences between isolated DNA and naturally occurring
    DNA, especially where the structural differences are
    merely ancillary to the breaking of covalent bonds, a
    process that is itself not inventive.
    II
    As noted, in addition to the BRCA gene claims dis-
    cussed above, the claims at issue in this appeal include
    four claims to BRCA cDNA and two claims to portions of
    the BRCA genes and cDNA as small as 15 nucleotides
    long.
    I agree with the court that the claims to BRCA cDNA
    are eligible for patenting. The cDNA cannot be isolated
    from nature, but instead must be created in the labora-
    tory. 5 The end product is a human-made invention with
    5    The appellees argue that the BRCA1 cDNA can be
    isolated from nature, and they refer to a BRCA1 pseu-
    dogene called BRCA1P1 that is found in the human
    genome. However, the appellees have failed to demon-
    strate that the pseudogene consists of the same sequence
    as the BRCA1 cDNA.
    17                       ASSOCIATION FOR MOLECULAR    v. PTO
    distinct structure because the introns that are found in
    the native gene are removed from the cDNA segment.
    Additionally, the cDNA has a utility not present in the
    naturally occurring BRCA DNA and mRNA because
    cDNA can be attached to a promoter and inserted into a
    non-human cell to drive protein expression.
    However, I disagree with the court as to the two
    claims to short segments of DNA having at least 15
    nucleotides. Claim 6 of the ’282 patent covers any se-
    quence of the BRCA1 cDNA that is at least 15 nucleotides
    long. That claim encompasses each BRCA1 exon, even
    though each exon is naturally defined by transcription.
    Moreover, because small sequences of DNA are repeated
    throughout the three billion nucleotides of the human
    genome, the claim covers portions of the cDNA of more
    than 4% of human genes. It also covers portions of the
    DNA of nearly all human genes. Accordingly, efforts to
    sequence almost any gene could infringe claim 6 even
    though Myriad’s specification has contributed nothing to
    human understanding of other genes. Myriad is not
    entitled to such broad protection. See Mayo, 132 S. Ct. at
    1301, 1303 (examining “how much future innovation is
    foreclosed relative to the contribution of the inventor” and
    warning of the “danger” that overly broad patent claims
    might “foreclose[] more future invention than the underly-
    ing discovery could reasonably justify").
    Myriad could easily have claimed more narrowly to
    achieve the utility it attaches to segments of cDNA. It
    contends that those segments can be used as probes and
    primers. DNA probes must be chemically altered or
    “tagged” before they can be so used, and Myriad could
    have claimed the tagged segments to achieve probe func-
    tionality. A claim to tagged segments would not encom-
    pass the BRCA1 exons. As to primer functionality, many
    ASSOCIATION FOR MOLECULAR   v. PTO                       18
    of the cDNA segments will not work. Some will be too
    long. Some will be too short. Some will be palindromic
    and fold in on themselves. Myriad could have identified a
    subset of the segments that work as primers, and such a
    claim could be patentable if it were limited to species with
    “markedly different characteristics from any found in
    nature and . . . having the potential for significant util-
    ity.” Chakrabarty, 447 U.S. at 310. The problem with
    claim 6 is that it is so broad that it includes products of
    nature (the BRCA1 exons) and portions of other genes; its
    validity is not salvaged because it includes some species
    that are not natural. Accordingly, I would hold claim 6
    unpatentable.
    The other claim to a short segment of DNA, claim 5 of
    the ’282 patent, is breathtakingly broad. That claim
    covers any segment of the DNA defined by claim 1, pro-
    vided that the segment is at least 15 nucleotides long.
    Claim 1, in turn, covers any isolated DNA that codes for
    the BRCA1 polypeptide. Thus, claim 5 would cover not
    only the isolated BRCA1 gene in each of its numerous
    molecular variations, but also any sub-sequence of those
    molecules, including portions that fall in the undefined
    range of those molecules denoted “vvvvvvvvvvvvv.” Claim
    5 would therefore be unpatentable for the same reasons
    as claim 1 and claim 6.
    Of course, in light of its breadth, claim 5 of the ’282
    patent is likely to be invalid on other grounds, and thus a
    ruling as to patent eligibility with respect to that claim
    may be superfluous. Nonetheless, it is important to
    consider the effects of such broad patent claims on the
    biotechnology industry. While Myriad has emphasized
    the biotechnology industry’s need of patent protection to
    encourage and reward research in this difficult and
    important field, there is another side to the coin. Broad
    19                        ASSOCIATION FOR MOLECULAR    v. PTO
    claims to genetic material present a significant obstacle to
    the next generation of innovation in genetic medicine—
    multiplex tests and whole-genome sequencing.             New
    technologies are being developed to sequence many genes
    or even an entire human genome rapidly, but firms devel-
    oping those technologies are encountering a thicket of
    patents.     Secretary’s Advisory Comm. on Genetics,
    Health, and Society, Dep’t of Health & Human Servs.,
    Gene Patents and Licensing Practices and Their Impact on
    Patient Access to Genetic Tests 49-62 (2010). In order to
    sequence an entire genome, a firm would have to license
    thousands of patents from many different licensors. See
    id. at 50-51. Even if many of those patents include claims
    that are invalid for anticipation or obviousness, the costs
    involved in determining the scope of all of those patents
    could be prohibitive.      See id. at 51-52; Rebecca S.
    Eisenberg, Noncompliance, Nonenforcement, Nonproblem?
    Rethinking the Anticommons in Biomedical Research, 45
    Hou. L. Rev. 1059, 1076-1080 (2008) (concluding that
    existing studies “have focused relatively little attention on
    downstream product development” and that interviews
    accompanying those studies suggest that, though smaller
    than initially feared, the costs associated with the patent
    thicket are “quite real in the calculations of product-
    developing firms”).
    My colleagues assign significant weight to the fact
    that since 2001 the PTO has had guidelines in place that
    have allowed patents on entire human genes. They
    conclude that those guidelines, and the PTO’s earlier
    practice, are entitled to deference from this court as to the
    question whether patents to isolated human genes consti-
    tute patent-eligible subject matter. I think the PTO’s
    practice and guidelines are not entitled to significant
    weight, for several reasons.
    ASSOCIATION FOR MOLECULAR   v. PTO                      20
    First, as we have recognized, the PTO lacks substan-
    tive rulemaking authority as to issues such as patentabil-
    ity. Animal Legal Def. Fund v. Quigg, 
    932 F.2d 920
    , 930
    (Fed. Cir. 1991). In areas of patent scope, we owe defer-
    ence only commensurate with “the thoroughness of its
    consideration and the validity of its reasoning.” Merck &
    Co. v. Kessler, 
    80 F.3d 1543
    , 1550 (Fed. Cir. 1996). The
    comments that the PTO issued at the time of its 2001
    guidelines in response to suggestions that isolated human
    genes were not patentable are, frankly, perfunctory. See
    John M. Conley & Roberte Makowski, Back to the Future:
    Rethinking the Product of Nature Doctrine as a Barrier to
    Biotechnology Patents, 85 J. Pat. & Trademark Off. Soc’y
    301 (2003). Because those comments, at least on their
    face, do not reflect thorough consideration and study of
    the issue, I do not regard them as worthy of much weight
    in the analysis of this complex question.
    Second, whatever force the PTO’s views on the issue
    of patent eligibility may have had in the past has, at the
    very least, been substantially undermined by the position
    the government has taken in this case. The Department
    of Justice has twice filed a brief on behalf of the United
    States in this court taking the position that Myriad’s gene
    claims (other than the cDNA claims) are not patent-
    eligible. Although the PTO did not “sign” the brief on
    either occasion and we are left to guess about the status
    of any possible continuing inter-agency disagreements
    about the issue, the Department of Justice speaks for the
    Executive Branch, and the PTO is part of the Executive
    Branch, so it is fair to conclude that the Executive Branch
    has modified its position from the one taken by the PTO
    in its 2001 guidelines and, informally, before that.
    Finally, prior to the Supreme Court’s decision in
    Chakrabarty, the PTO had determined that microorgan-
    21                       ASSOCIATION FOR MOLECULAR   v. PTO
    isms were not subject to patenting, but the Supreme
    Court gave no indication that it regarded that view as
    entitled to deference. Moreover, the Court gave short
    shrift to the Commissioner’s contention (which was made
    the lead argument in the government’s brief in that case)
    that the patentability of life-forms was an issue that
    should be left to Congress. Citing Marbury v. Madison, 5
    U.S. (1 Cranch) 137 (1803), the Court explained that
    “Congress has performed its constitutional role in defin-
    ing patentable subject matter in § 101; we perform ours in
    construing the language Congress has employed.” Chak-
    rabarty, 477 U.S. at 315. We have the same responsibility
    and should not shy away from deciding the issues of law
    that the parties have brought to us. Although my col-
    leagues believe our analysis of the legal question in this
    case should be influenced by purported expectations of the
    inventing community based on the PTO’s past practice of
    issuing patents on human genes, that is in effect to give
    the PTO lawmaking authority that Congress has not
    accorded it. 6 There is no collective right of adverse pos-
    session to intellectual property, and we should not create
    one. Our role is to interpret the law that Congress has
    written in accordance with the governing precedents. I
    would do so and would affirm the district court’s rulings
    as to the BRCA gene and BRCA gene segment claims.
    6  Because the asserted reliance interest is based on
    PTO practice and not on prior judicial decisions, this case
    is not analogous to Warner Jenkinson Co. v. Hilton Davis
    Chemical Co., 
    520 U.S. 17
     (1997), or Festo Corp. v.
    Shoketsu Kinzoku Kogyo Kabushiki Co., 
    535 U.S. 722
    (2002), where the expectations of the inventing commu-
    nity were based on longstanding Supreme Court prece-
    dent.
    

Document Info

Docket Number: 2010-1406

Citation Numbers: 689 F.3d 1303, 103 U.S.P.Q. 2d (BNA) 1681, 2012 U.S. App. LEXIS 17679, 2012 WL 3518509

Judges: Lourie, Bryson, Moore

Filed Date: 8/16/2012

Precedential Status: Precedential

Modified Date: 11/5/2024

Authorities (46)

Intervet Inc. v. Merial Limited , 617 F.3d 1282 ( 2010 )

Association for Molecular Pathology v. United States Patent ... , 702 F. Supp. 2d 181 ( 2010 )

Cochrane v. Badische Anilin & Soda Fabrik , 4 S. Ct. 455 ( 1884 )

Maryland Casualty Co. v. Pacific Coal & Oil Co. , 61 S. Ct. 510 ( 1941 )

Hartranft v. Wiegmann , 7 S. Ct. 1240 ( 1887 )

Bilski v. Kappos , 130 S. Ct. 3218 ( 2010 )

Gottschalk v. Benson , 93 S. Ct. 253 ( 1972 )

In Re King , 107 F.2d 618 ( 1939 )

In Re Marden , 47 F.2d 957 ( 1931 )

Parker v. Flook , 98 S. Ct. 2522 ( 1978 )

Diamond v. Diehr , 101 S. Ct. 1048 ( 1981 )

J. E. M. Ag Supply, Inc. v. Pioneer Hi-Bred International, ... , 122 S. Ct. 593 ( 2001 )

Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co. , 122 S. Ct. 1831 ( 2002 )

National Federation of Independent Business v. Sebelius , 132 S. Ct. 2566 ( 2012 )

Horne v. Flores , 129 S. Ct. 2579 ( 2009 )

In Re Ralph R. Grams and Dennis C. Lezotte , 888 F.2d 835 ( 1989 )

Village of Arlington Heights v. Metropolitan Housing ... , 97 S. Ct. 555 ( 1977 )

MedImmune, Inc. v. Genentech, Inc. , 127 S. Ct. 764 ( 2007 )

Association for Molecular Pathology v. United States Patent ... , 669 F. Supp. 2d 365 ( 2009 )

Amgen, Inc. v. Hoechst Marion Roussel, Inc. , 126 F. Supp. 2d 69 ( 2001 )

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