Hyatt v. Kappos ( 2010 )


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  •   United States Court of Appeals
    for the Federal Circuit
    __________________________
    GILBERT P. HYATT,
    Plaintiff-Appellant,
    v.
    DAVID KAPPOS, DIRECTOR, PATENT AND
    TRADEMARK OFFICE,
    Defendant-Appellee.
    __________________________
    2007-1066
    __________________________
    Appeal from the United States District Court for the
    District of Columbia in case No. 03-CV-901, Judge Henry
    H. Kennedy, Jr.
    ___________________________
    Decided: November 8, 2010
    ___________________________
    AARON M. PANNER, Kellogg, Huber, Hansen, Todd,
    Evans & Figel, P.L.L.C., of Washington, DC, argued for
    plaintiff-appellant on rehearing en banc. Of counsel on
    the brief were MICHAEL L. MARTINEZ, Crowell & Moring
    LLP, of Washington, DC, and GREGORY L. ROTH, Law
    Offices of Gregory L. Roth, of La Palma, California. On
    the initial brief were MICHAEL L. MARTINEZ and MICHAEL
    I. COE, Crowell & Moring LLP, of Washington, DC. Of
    counsel on the brief was GREGORY L. ROTH, Law Offices of
    HYATT   v. KAPPOS                                          2
    Gregory L. Roth, of La Palma, California. Of counsel was
    KENNETH C. BASS, III, Sterne, Kessler, Goldstein & Fox
    P.L.L.C., of Washington, DC, and J. ROBERT CHAMBERS,
    Wood Herron & Evans, LLP, of Cincinnati, Ohio.
    BETH S. BRINKMANN, Deputy Assistant Attorney Gen-
    eral, Appellate Staff, Civil Division, United States De-
    partment of Justice, of Washington, DC, argued for
    defendant-appellee on rehearing en banc. With her on the
    brief were TONY WEST, Assistant Attorney General, and
    SCOTT R. MCINTOSH and MARK R. FREEMAN, Attorneys. Of
    counsel on the brief were RAYMOND T. CHEN, Solicitor, and
    ROBERT J. MCMANUS and THOMAS W. KRAUSE, Associate
    Solicitors, Office of the Solicitor, United States Patent and
    Trademark Office, of Arlington, Virginia. On initial brief
    were STEPHEN WALSH, Acting Solicitor, and ROBERT J.
    MCMANUS and WILLIAM G. JENKS, Associate Solicitors,
    Office of the Solicitor, United States Patent and Trade-
    mark Office, of Arlington, Virginia. Of counsel were
    RAYMOND T. CHEN, Acting Solicitor, and THOMAS W.
    KRAUSE, Associate Solicitor.
    MAXIM H. WALDBAUM, Schiff Hardin LLP, of New
    York, New York for amicus curiae Federation Interna-
    tionale Des Conseils en Propriete Industrielle on rehear-
    ing en banc.
    MARK J. ABATE, New York Intellectual Property Law
    Association, of New York, New York, for amicus curiae
    New York Intellectual Property Law Association on
    rehearing en banc.
    DANIEL B. RAVICHER, Benjamin N. Cardozo School of
    Law, of New York, New York, for amicus curiae Public
    Patent Foundation on rehearing en banc.
    3                                            HYATT   v. KAPPOS
    HERBERT C. WAMSLEY, Intellectual Property Owners
    Association, of Washington, DC, for amicus curiae Intel-
    lectual Property Owners Association on rehearing en
    banc. On the brief were DOUGLAS K. NORMAN and KEVIN
    H. RHODES, Intellectual Property Owners Association, of
    Washington, DC; and ROBERT M. ISACKSON, NICHOLAS H.
    LAM, and JACOB A. SNOW, Orrick, Herrington & Sutcliffe
    LLP, of New York, New York.
    LAUREN A. DEGNAN, Fish & Richardson, P.C., of
    Washington, DC, for amicus curiae Intel Corporation on
    rehearing en banc. With her on the brief was JOHN A.
    DRAGSETH, of Minneapolis, Minnesota. Of counsel on the
    brief was HARRY F. MANBECK, JR., Rothwell, Figg, Ernst &
    Manbeck P.C., of Washington, DC.
    ANN M. MCCRACKIN, Franklin Pierce Law Center, of
    Concord, New Hampshire, for amicus curiae Franklin
    Pierce Law Center on rehearing en banc. With her on
    the brief was J. JEFFREY HAWLEY.
    __________________________
    Before RADER, Chief Judge, NEWMAN, LOURIE, BRYSON,
    GAJARSA, LINN, DYK, PROST, and MOORE, Circuit Judges.
    Opinion for the court filed by Circuit Judge MOORE, in
    which Chief Judge RADER and Circuit Judges LOURIE,
    BRYSON, LINN, and PROST join.
    Concurring-in-part, dissenting-in-part opinion filed by
    Circuit Judge NEWMAN.
    Dissenting opinion filed by Circuit Judge DYK, in which
    Circuit Judge GAJARSA joins.
    MOORE, Circuit Judge.
    Under the patent laws, a patent applicant who is dis-
    satisfied with the decision of the Board of Patent Appeals
    and Interferences (Board) regarding his application may
    choose one of two paths. The applicant may appeal the
    Board’s decision to the Court of Appeals for the Federal
    Circuit, which will review the Board’s decision on the
    record that was before the U.S. Patent and Trademark
    Office (Patent Office). Alternatively, the applicant may
    file a civil action in district court, and the court will
    determine whether the applicant “is entitled to receive a
    patent for his invention . . . as the facts in the case may
    appear.” 
    35 U.S.C. § 145
    . This case presents the issue of
    what limitations exist on an applicant’s right to introduce
    new evidence in a § 145 civil action.
    We have characterized this civil action as a “hybrid”
    action. It is not an appeal; the language of § 145 ex-
    pressly distinguishes its civil action from a direct appeal,
    and the Supreme Court has recognized that an applicant
    may introduce new evidence before the district court that
    was not presented to the Patent Office. However, it is
    also not an entirely de novo proceeding. Issues that were
    not considered by the Patent Office cannot be raised with
    the district court in most circumstances, and if no new
    evidence is introduced, the court reviews the action on the
    administrative record, subject to the court/agency stan-
    dard of review. The particular significance of a § 145 civil
    action is that it affords an applicant the opportunity to
    introduce new evidence after the close of the administra-
    tive proceedings—and once an applicant introduces new
    evidence on an issue, the district court reviews that issue
    de novo. Thus, an applicant’s ability to introduce new
    evidence is the hallmark of a § 145 action. It is the pri-
    mary factor that distinguishes a civil action under § 145
    from an appeal.
    5                                           HYATT   v. KAPPOS
    We hold that 
    35 U.S.C. § 145
     imposes no limitation on
    an applicant’s right to introduce new evidence before the
    district court, apart from the evidentiary limitations
    applicable to all civil actions contained in the Federal
    Rules of Evidence and Federal Rules of Civil Procedure.
    In doing so, we reject the Director’s proposal that only
    “new evidence that could not reasonably have been pro-
    vided to the agency in the first instance” is admissible in a
    § 145 action. Dir. Br. at 8. While the proceedings before
    the Patent Office do not limit the admissibility of new
    evidence in the district court, they may be considered by
    the district court if they cast doubt on the reliability of
    late-produced evidence, as with inconsistent statements
    or new recollections of previously forgotten events. As
    with any evidence introduced in a civil action, the district
    court as factfinder may give less weight to evidence
    introduced by an applicant in a § 145 action if the district
    court questions its credibility or reliability. Because the
    district court abused its discretion when it excluded Mr.
    Hyatt’s declaration under the wrong legal standard, we
    vacate the decision of the district court and remand.
    I.   BACKGROUND
    Gilbert P. Hyatt is the sole named inventor of U.S.
    Patent Application No. 08/471,702 (the ’702 application),
    titled “Improved Memory Architecture Having a Multiple
    Buffer Output Arrangement.” The ’702 application re-
    lates to a computerized display system for processing
    image information.
    Mr. Hyatt filed the ’702 application on June 6, 1995.
    As filed, the ’702 application included a 238-page specifi-
    cation, 40 pages of figures, and 15 claims; it originally
    claimed priority through a chain of related applications to
    an application filed in 1984 and was later amended to
    HYATT   v. KAPPOS                                        6
    claim priority to a 1975 application. Mr. Hyatt filed
    several preliminary amendments in which he amended
    the drawings and specification and added 74 new claims.
    The examiner issued a nonfinal office action rejecting
    all pending claims on various grounds, including aban-
    donment, obviousness, and double patenting. Mr. Hyatt
    filed a response, in which he traversed the abandonment
    and obviousness rejections and amended the claims to
    distinguish over the claims of his copending applications.
    Mr. Hyatt also cancelled various claims and added new
    ones, bringing the total number of claims to 117.
    The examiner informed Mr. Hyatt that the response
    was incomplete because Mr. Hyatt had failed to identify
    the novelty of and support in the specification for his
    amended and added claims. Mr. Hyatt identified features
    of the new claims that allegedly distinguished over the
    prior art. Mr. Hyatt also listed pages of the specification
    that contained representative support for each of the
    distinguishing features of the claims.
    The examiner issued a final office action rejecting all
    117 claims. He identified particular categories of claimed
    subject matter that he concluded lacked support in the
    specification and rejected all claims under 
    35 U.S.C. § 112
    , first paragraph, for failure to comply with the
    written description and enablement requirements. He
    also rejected all claims for both obviousness-type and
    Schneller-type double patenting over eight references.
    Finally, he rejected nine claims as being anticipated and
    seven as being obvious over a combination of three refer-
    ences. All told, the examiner issued 2546 separate rejec-
    tions of Mr. Hyatt’s 117 claims.
    7                                            HYATT   v. KAPPOS
    Mr. Hyatt appealed to the Board, addressing every
    one of the examiner’s grounds for rejection in a 129-page
    appeal brief. With respect to the written description
    rejections, Mr. Hyatt argued that the limitations identi-
    fied by the examiner as lacking sufficient written descrip-
    tion had “extensive basis” in the specification. J.A. 10830.
    Mr. Hyatt included a table (Table 1) that listed represen-
    tative pages in the specification containing the “terminol-
    ogy” objected to by the examiner. J.A.10832. For certain
    terms, Mr. Hyatt also identified figures and page ranges
    of the specification that described the relevant terms.
    The Board reversed all of the examiner’s rejections for
    obvious-type and Schneller-type double patenting. The
    Board also reversed all of the anticipation and obvious-
    ness rejections. With respect to the written description
    rejections, the Board noted that merely pointing to the
    occurrence of isolated words in the specification—as Mr.
    Hyatt had done in Table I—did not adequately establish
    that the specification contained written description for the
    particular combination of elements that made up each
    limitation. Still, after performing its own review of the
    specification, as it is required to do, the Board reversed all
    of the examiner’s written description and enablement
    rejections with respect to 38 of the pending claims and
    many of these rejections for the other 79 claims, finding
    that the features identified by the examiner as lacking
    written description were either adequately disclosed or
    were not claimed. Thus, Mr. Hyatt prevailed on over 93%
    of the examiner’s rejections at the Board level. The Board
    affirmed at least one of the examiner’s written description
    and enablement rejections with respect to each of 79
    claims. Mr. Hyatt filed a Request for Rehearing; the
    Board dismissed the Request without considering the
    merits, finding that Mr. Hyatt raised new arguments that
    HYATT   v. KAPPOS                                            8
    could have been presented earlier to either the examiner
    or the Board.
    Following the Board’s decision dismissing his Request
    for Rehearing, Mr. Hyatt filed a civil action in the United
    States District Court for the District of Columbia against
    the Director of the Patent Office (Director) pursuant to 
    35 U.S.C. § 145
    . The Director moved for summary judgment
    that the pending claims were invalid for failure to comply
    with the written description requirement. Mr. Hyatt
    opposed the motion, arguing that genuine issues of mate-
    rial fact existed to preclude summary judgment as to
    written description. In support of his opposition, Mr.
    Hyatt submitted a written declaration in which he identi-
    fied portions of the specification that one of skill in the art
    would understand to describe the limitations challenged
    by the Director. The Director argued that the court
    should not consider Mr. Hyatt’s declaration because he
    did not previously submit it to the examiner or the Board.
    The district court determined that it could not con-
    sider Mr. Hyatt’s declaration. Hyatt v. Dudas, 
    2005 U.S. Dist. LEXIS 45319
    , at *12 (D.D.C. Sept. 30, 2005). The
    court found that the Board’s written description rejections
    were substantively identical to, albeit more detailed than,
    the rejections issued by the examiner. 
    Id. at *19
    . Be-
    cause Mr. Hyatt’s declaration was directed to those writ-
    ten description rejections, the court concluded that he
    could have presented the declaration earlier, “certainly by
    the time his patent application was considered by the
    Board.” 
    Id. at *24
    . Finding that Mr. Hyatt had no expla-
    nation for why he failed to offer his declaration during the
    proceedings before the Board, the court determined that
    “[Mr.] Hyatt's failure to explain why he didn’t submit his
    declaration earlier is negligent, and the district court
    9                                           HYATT   v. KAPPOS
    need not consider evidence negligently submitted after
    the end of administrative proceedings.” 
    Id. at *26
    .
    Mr. Hyatt did not submit any evidence to the district
    court apart from his declaration, which the court ex-
    cluded. Therefore, the court reviewed the Board’s fact
    findings for substantial evidence and granted summary
    judgment to the Director that the pending claims were
    unpatentable for failure to comply with the written de-
    scription requirement. 
    Id. at *27
    .
    Mr. Hyatt appealed, and a divided panel of this court
    affirmed. Hyatt v. Doll, 
    576 F.3d 1246
     (Fed. Cir. 2009).
    The panel majority acknowledged that “it is beyond
    question that in appropriate circumstances new evidence
    may be submitted to the district court in a § 145 action
    (subject, at least, to the Federal Rules of Evidence).” Id.
    at 1266. However, the majority stated that there was a
    “general practice” among federal courts “in some circum-
    stances to exclude evidence which a party could and
    should have introduced before the Patent Office but did
    not despite an obligation to do so.” Id. at 1266. The
    majority also concluded that the Administrative Proce-
    dure Act (APA) imposed restrictions on the admission of
    new evidence in a § 145 action. Id. at 1270. The majority
    noted that judicial review of an agency action is generally
    restricted to the agency record and that the Patent Office
    is an agency whose findings of fact must be reviewed
    according to the APA’s court/agency standard of review.
    Id. at 1267, 1269. Therefore, the majority determined
    that although review in a § 145 action is “[o]f course . . .
    not strictly confined to the agency record,” “neither are
    [§ 145] proceedings wholly de novo.” Id. at 1269.
    Turning to the merits of Mr. Hyatt’s case, the major-
    ity stated that although Mr. Hyatt could have identified
    HYATT   v. KAPPOS                                        10
    the portions in the specification that provided written
    description support for the disputed limitations any time
    after the office action, he “refused to cooperate, even
    though he necessarily possessed the information the
    examiner sought by the time he filed his application.” Id.
    Although the majority acknowledged the district court’s
    finding that Mr. Hyatt’s failure to submit the evidence in
    his declaration earlier was negligent, the majority deter-
    mined that “it is clear from the record that Hyatt willfully
    refused to provide evidence in his possession in response
    to a valid action by the examiner.” Id. (emphasis added).
    In light of Mr. Hyatt’s “willful non-cooperation,” the
    majority held that the district court did not abuse its
    discretion in excluding the declaration. Id. The majority
    then affirmed the court’s grant of summary judgment. Id.
    at 1279.
    The dissenting judge disagreed, arguing that the dis-
    trict court abused its discretion by applying the wrong
    legal test for the admissibility of the evidence. The dis-
    sent argued that the plain language, legislative history,
    and Supreme Court jurisprudence relating to § 145 estab-
    lish that an applicant’s right to present new evidence in a
    § 145 action is subject only to the Federal Rules of Evi-
    dence and Civil Procedure. Id. at 1280-81, 1284. Further,
    the dissent disputed the propriety of determining on
    appeal that Mr. Hyatt willfully withheld his declaration.
    We agreed to rehear the appeal en banc and vacated
    the judgment of the panel. Hyatt v. Kappos, 
    366 Fed. Appx. 170
     (Fed. Cir. 2010). We asked the parties to direct
    their briefs to the following questions:
    (a) Are there any limitations on the admissibility
    of evidence in section 145 proceedings? In par-
    ticular-
    11                                           HYATT   v. KAPPOS
    (i) Does the Administrative Procedure Act
    require review on the agency record in
    proceedings pursuant to section 145?
    (ii) Does section 145 provide for a de novo
    proceeding in the district court?
    (iii) If section 145 does not provide for a de
    novo proceeding in the district court, what
    limitations exist on the presentation of
    new evidence before the district court?
    (b) Did the district court properly exclude the Hyatt
    declaration?
    In addition to the parties’ briefs, we received seven
    amicus briefs. Amicus briefs submitted by amici Public
    Patent Foundation, American Intellectual Property Law
    Association (AIPLA), Fédération Internationale des
    Conseils en Propriété Industrielle, New York Intellectual
    Property Law Association (NYIPLA), and Intellectual
    Property Owners Association (IPO) opposed the panel
    majority’s imposition of limitations on the evidence ad-
    missible in a § 145 action. Amici Intel Corporation and
    the Franklin Pierce Law Center submitted briefs arguing
    in favor of greater limitations on the admissibility of
    evidence in § 145 actions, though neither argued in favor
    of the standard proposed by the Patent Office in this case.
    We heard oral argument on July 8, 2010. For the rea-
    sons below, we hold that the only limitations on the
    admissibility of evidence applicable to a § 145 proceeding
    are the limitations imposed by the Federal Rules of Evi-
    dence and Federal Rules of Civil Procedure. Therefore,
    we hold that the district court applied the wrong legal
    standard for the admissibility of evidence in a § 145
    HYATT   v. KAPPOS                                        12
    proceeding and abused its discretion when it excluded Mr.
    Hyatt’s declaration.
    II.   DISCUSSION
    On rehearing, Mr. Hyatt argues that the only limita-
    tions on the admissibility of new evidence in a § 145
    proceeding are the rules of evidence generally applicable
    to all civil actions. Mr. Hyatt asserts that the legislative
    history of § 145 and its predecessor statute shows that
    Congress intended to provide a genuine alternative to an
    on-the-record appeal that permits an applicant to bring a
    new case, complete with new evidence, to show that his
    patent should issue. Mr. Hyatt asserts that case law from
    the Supreme Court and this circuit supports his interpre-
    tation. Mr. Hyatt also argues that nothing in the APA
    limits the introduction of new evidence in a § 145 proceed-
    ing. Therefore, Mr. Hyatt contends that the district court
    acted improperly in excluding his declaration.
    The Director, in contrast, argues that § 145 should be
    interpreted to prohibit an applicant from introducing new
    evidence before the district court unless the applicant
    could not reasonably have provided that evidence to the
    Patent Office in the first instance. The Director asserts
    that the proceeding authorized by the predecessor statute
    of § 145 was effectively a suit to set aside a judgment and
    that under established rules of equity practice, a court
    presiding over such a suit would have excluded evidence
    that the plaintiff failed, without reasonable excuse, to
    present previously. Further, the Director argues that
    APA principles and various policy considerations weigh in
    favor of limiting an applicant’s right to introduce new
    evidence. The Director contends that because Mr. Hyatt
    could have presented the declaration to the examiner and
    13                                           HYATT   v. KAPPOS
    to the Board prior to instigating the present action, the
    district court correctly excluded the declaration.
    A.
    Section 145, titled “Civil action to obtain patent,” pro-
    vides as follows:
    An applicant dissatisfied with the decision of the
    Board of Patent Appeals and Interferences in an
    appeal under section 134(a) of this title may,
    unless appeal has been taken to the United States
    Court of Appeals for the Federal Circuit, have
    remedy by civil action against the Director in the
    United States District Court for the District of Co-
    lumbia if commenced within such time after such
    decision, not less than sixty days, as the Director
    appoints. The court may adjudge that such appli-
    cant is entitled to receive a patent for his inven-
    tion, as specified in any of his claims involved in
    the decision of the Board of Patent Appeals and
    Interferences, as the facts in the case may appear
    and such adjudication shall authorize the Director
    to issue such patent on compliance with the re-
    quirements of law. All the expenses of the pro-
    ceedings shall be paid by the applicant.
    
    35 U.S.C. § 145
     (emphases added).
    On its face, § 145 authorizes a civil action in district
    court by which an applicant can prove his entitlement to a
    patent. The statute provides no indication that this civil
    action is somehow different from a customary civil action.
    In particular, § 145 does not provide that unique rules of
    evidence, separate from or supplementary to the Federal
    Rules of Evidence that apply to all civil actions, control to
    HYATT   v. KAPPOS                                         14
    limit an applicant’s ability to introduce new evidence
    before the district court. Additionally, § 145 makes clear
    that the civil action is distinct from an appeal, in which
    the applicant would be limited to the record before the
    Patent Office. See 
    35 U.S.C. § 144
    . Pursuant to the plain
    language of § 145, this civil action does not merely afford
    judicial review of agency action. Rather, the statute
    directs that the district court may “adjudge that such
    applicant is entitled to receive a patent for his invention .
    . . as the facts in the case may appear.”
    B.
    The lengthy legislative history of § 145 and its prede-
    cessor statute, which dates back nearly to the creation of
    the Patent Office, shows that Congress intended to pro-
    vide for a civil action in which an applicant would be free
    to introduce new evidence. Congress established the
    Patent Office and the patent examination scheme in 1836.
    Act of July 4, 1836, ch. 357, 
    5 Stat. 117
     (1836 Act). The
    1836 Act provided that the Commissioner of Patents
    would determine whether each applicant was entitled to a
    patent on his application. 
    Id.
     §§ 1, 7, 
    5 Stat. 117
    , 120. An
    applicant dissatisfied with the Commissioner’s decision
    regarding his application could appeal to a board of three
    examiners, which could overturn the Commissioner’s
    decision in full or in part. 
    Id.
     § 7, 
    5 Stat. 121
    .
    The decision of the board of examiners was final in ex
    parte cases. Id.; see also P.J. Federico, Evolution of
    Patent Office Appeals, 22 J. Pat. Off. Soc’y 838, 840
    (1940). However, in cases where the board rejected an
    application on the ground that it interfered with an
    unexpired patent, the 1836 Act provided that the appli-
    cant “may have remedy by bill in equity.” 
    Id.
     § 16, 
    5 Stat. 123
    -24. A bill in equity was the written mechanism that
    15                                          HYATT   v. KAPPOS
    commenced an original suit in a court of equity. See
    Shipman, Handbook of the Law of Equity Pleading § 101,
    p. 168 (West 1897). Courts with jurisdiction over an
    applicant’s bill in equity could “adjudge that such appli-
    cant is entitled . . . to have and receive a patent for his
    invention . . . as the fact of priority of right or invention
    shall in any such case be made to appear.” 1836 Act, § 16,
    
    5 Stat. 124
    . Three years later, Congress extended an
    applicant’s remedy by bill in equity beyond interferences
    to “all cases where patents are refused for any reason
    whatever.” Act of Mar. 3, 1839, ch. 88, § 10, 
    5 Stat. 353
    ,
    354.
    Congress made various changes to the appeal struc-
    ture within the Patent Office over the next few decades.
    None of these changes affected an applicant’s separate
    remedy by bill in equity, which continued to be available.
    In 1870, Congress passed an act to “revise, consolidate,
    and amend the Statutes relating to Patents and Copy-
    rights.” Act of July 8, 1870, ch. 230, 
    16 Stat. 198
     (1870
    Act). The 1870 Act provided for a three-tier appeal proc-
    ess within the Patent Office. An applicant whose applica-
    tion was rejected by the primary examiner could appeal to
    a board of examiners-in-chief. 
    Id.
     § 46, 
    16 Stat. 204
    -05.
    Similarly, a party to an interference could appeal an
    adverse decision by the examiner in charge of interfer-
    ences to the board. 
    Id.
     If the applicant or party to the
    interference was dissatisfied with the board’s decision, he
    could appeal first to the Commissioner of Patents and
    then to the supreme court of the District of Columbia. 
    Id.
    §§ 47-48, 
    16 Stat. 205
    .
    Pursuant to the 1870 Act, after all of these appeals
    were exhausted, the applicant could still seek remedy by
    bill in equity:
    HYATT   v. KAPPOS                                           16
    [W]henever a patent on application is refused . . .
    the applicant may have remedy by bill in equity;
    and the court . . . may adjudge that such applicant
    is entitled, according to law, to receive a patent for
    his invention . . . as the facts in the case may ap-
    pear. . . . [A]nd all the expenses of the proceeding
    shall be paid by the applicant, whether the final
    decision is in his favor or not.
    
    Id.
     § 52. Congress later recodified this section as § 4915
    of the Revised Statutes.
    Congress significantly modified the patent application
    review process in 1927, primarily in response to criticism
    regarding the length and complexity of the process. Act of
    March 2, 1927, ch. 273, 
    44 Stat. 1335
     (1927 Act); see also
    Federico, 22 J. Pat. Off. Soc’y at 941. 1 Various schemes
    were proposed to Congress for simplifying the process.
    Some proposals advocated eliminating one of the appeals;
    others advocated doing away with the bill in equity under
    § 4915. Id. at 941-42. The continued viability of § 4915
    was a particularly disputed issue, and Congress heard
    extensive testimony regarding the merits of the remedy
    by bill in equity in the hearings that preceded the Act.
    1    As P.J. Frederico explained in 1940, the “bill in
    equity” which in 1839 applied to both ex parte and inter-
    ference cases “was thus at this time [1839] given the scope
    which has been maintained to the present day.” Federico,
    22 J. Pat. Off. Soc’y at 935. While Congress considered
    and changed the appeals process in 1927, the language of
    § 4915 in the bills debated in February 1927 and Decem-
    ber 1927 was identical, and was ultimately enacted in §
    4915 including the requirement that “the record in the
    Patent Office shall be admitted . . . without prejudice,
    however, to the right of the parties to take further testi-
    mony.”
    17                                            HYATT   v. KAPPOS
    Those who favored retaining § 4915 argued that an
    applicant’s right to introduce evidence that had not been
    before the Patent Office created a truly distinct, and
    therefore valuable, alternative to an on-the-record appeal.
    Charles E. Howson, Chairman of the Committee on
    Patent Law Revision for the American Bar Association,
    explained the significance of § 4915 as follows:
    Section 4915 has always been regarded by the
    patent bar, or those experienced in patent prac-
    tice, as the final check on the Patent Office to en-
    able a deserving inventor to get his just deserts if
    everything else fails. The advantage of section
    4915 is that it enables the party in interest, desir-
    ing to obtain a patent, to take evidence in a court
    or tribunal whose business it is to try issues of
    facts and make up a record in addition to that he
    has been enabled to furnish the examiners in the
    Patent Office, and therefore get before a court of
    competent jurisdiction everything connected with
    his rights and every fact connected with his pat-
    ent; in other words, have before him everything
    that courts in the country have before them in in-
    fringement cases.
    To Amend Section 52 of Judicial Code and Other Statutes
    Affecting Procedure in Patent Office: Hearings on H.R.
    6252 and H.R. 7087 Before the H. Comm. on Patents, 69th
    Cong., 1st Sess. 20-21 (1926) (To Amend Section 52)
    (emphases added). Another proponent of § 4915, A.C.
    Paul, the Chairman of the Patent Section of the Legisla-
    tion Committee of the American Bar Association, testified
    that he understood § 4915 to grant an applicant the right
    to “have the case start de novo after the decision of the
    board.” Id. at 81. Mr. Paul distinguished the bill in
    equity under § 4915 from an on-the-record appeal, ex-
    HYATT   v. KAPPOS                                          18
    plaining that “the difference [between § 4915 and an
    appeal] would be then if we went to the court of appeals
    by an appeal the decision must be based upon the same
    record. If we go into a court of equity the parties may use
    the record that they have in the Patent Office and may
    supplement it by additional evidence.” Id. (emphasis
    added). Another committee member testified that the
    original suit under § 4915 allowed an inventor to
    strengthen his case by enabling an applicant to “take
    testimony and bring out all the facts pertinent and have
    an absolutely full hearing in the matter.” Id. at 13
    (statement of Henry Huxley, Member of the Patent Sec-
    tion of the Legislation Committee of the American Bar
    Association). Congressman Albert Vestal similarly ex-
    plained that “if a party feels aggrieved, he can bring his
    suit in the equity court [under § 4915], but it is not an
    appeal. It is the bringing of a new suit.” Id. at 36; see also
    id. at 66 (under § 4915, “you may go to a court of equity
    and take testimony in open court and use the testimony in
    the Patent Office or both and have it as a proceeding de
    novo, not appeal with the presumption in favor of what
    has been done, but where you stand and the court listens
    to what you have to say and decides it on the merits”)
    (statement of Otto R. Barnett, President, American Pat-
    ent Law Association, Chicago, Ill.).
    The opponents of § 4915 also recognized that the rem-
    edy by bill in equity allowed an applicant to freely intro-
    duce new evidence in the district court. Indeed, they
    objected to the provision on precisely this basis. For
    example, the Commissioner of Patents testified that §
    4915 entitled an applicant to “start de novo . . . and build
    up a new record” in district court. Id. at 80 (statement of
    Hon. Thomas E. Robertson, Commissioner of Patents).
    He cautioned that § 4915 permitted applicants to “bring[]
    in evidence that they could have brought in before [the
    19                                         HYATT   v. KAPPOS
    Patent Office] but did not.” Id. at 81. The Commissioner
    also recognized that this new action allowed the relitiga-
    tion of matters already decided by the Patent Office,
    permitting the applicant “to build up a new record for
    dragging an opponent through a second time.” Id. at 80;
    see also id. at 81 (“after dragging a man through all this
    procedure which you have said is so complicated and
    burdensome, [an applicant can] start de novo in court,
    and bring in testimony not taken the first time”). The
    former Assistant Commissioner similarly opposed § 4915,
    arguing that § 4915 “should be cut out entirely for ex
    parte applications” to force an applicant to introduce “all
    the testimony pertinent to his case” to the Patent Office.
    Id. at 76 (statement of Karl Fenning, former Assistant
    Commissioner of Patents).
    Thus, proponents and opponents of § 4915 alike rec-
    ognized, and conveyed to Congress, that the remedy by
    bill in equity allowed an applicant to introduce new
    evidence in the district court, regardless of whether that
    evidence had been provided to the Patent Office in earlier
    proceedings. Nothing in the Congressional record leading
    up to the 1927 Act indicates that any member of Congress
    or the bar contemplated any limit on this right apart from
    the limits imposed by the normal rules of equity practice.
    Despite being presented with the policy reasons for
    eliminating the remedy by bill in equity, Congress chose
    to retain § 4915. 1927 Act, § 3, 
    44 Stat. 1335
    -36. How-
    ever, Congress gave applicants a right to choose between
    an appeal and the remedy by bill in equity. An applicant
    who chose to appeal an adverse decision by the Patent
    Office thus “waive[d] his right to proceed under section
    4915.” 
    Id.
     § 8, 
    44 Stat. 1336
    .
    HYATT   v. KAPPOS                                       20
    Congress bifurcated § 4915 into two provisions in
    1952, sections 145 and 146 of Title 35 of the United States
    Code. 2 Act of July 19, 1952, ch. 950, §§ 145-46, 
    66 Stat. 792
    , 803 (1952 Act). Section 145, which controlled ex
    parte proceedings, provided that an “applicant dissatisfied
    with the decision of the Board of Appeals may unless
    appeal has been taken to the United States Court of
    Customs and Patent Appeals have remedy by civil action
    against the Commissioner.” 
    Id.
     § 145, 
    66 Stat. 803
     (em-
    phasis added). Section 146, which applied to interfer-
    ences, similarly provided for parties to an interference to
    have a “remedy by civil action” and that “the record in the
    Patent and Trademark Office shall be admitted . . . with-
    out prejudice to the right of the parties to take further
    testimony.” 
    Id.
     § 146, 
    66 Stat. 803
    . Congress stressed
    that the 1952 Act made “no fundamental change in the
    various appeals and other review of Patent Office action.”
    See S. Rep. No. 82-1979 (1952), reprinted in 1952
    U.S.C.C.A.N. 2394, 2400. Subsequent changes to § 145
    have not altered the substantive application of the statute
    in any way relevant to our analysis.
    Though the Director does not directly dispute any of
    the relevant legislative history, he nonetheless argues
    that Congress intended for new evidence to be admitted in
    § 145 actions only where it could not reasonably have
    been presented to the agency in the first instance. Dir.
    Br. at 28. The Director points to pre-1952 decisions of
    some federal courts which he characterizes as having
    2    As sections 145 and 146 both stem from § 4915,
    we have characterized these sections as “parallel provi-
    sions” to be treated similarly. Winner Int’l Royalty Corp.
    v. Wang, 
    202 F.3d 1340
    , 1345 (Fed. Cir. 2000). We see no
    rationale that would justify distinguishing between
    interferences and ex parte actions for admissibility pur-
    poses.
    21                                          HYATT   v. KAPPOS
    “excluded or discounted evidence which the applicant had
    failed, without reasonable excuse, to present to the
    agency.” Id. at 26. According to the Director, Congress
    must have intended to codify this “longstanding” interpre-
    tation when Congress reenacted § 4915 without substan-
    tive change as § 145. Id. at 28. The flaw with the
    Director’s claim is inherent in his argument—Congress
    could not have implicitly adopted the different approaches
    various courts took with regard to an admissibility stan-
    dard.
    The Director is correct that, prior to the 1952 Act,
    some regional circuits excluded or gave less weight to
    evidence based on an applicant’s conduct before the
    Patent Office. The courts did so under an array of incon-
    sistent standards (including willful withholding, inten-
    tional suppression, and bad faith). See, e.g., Barrett Co. v.
    Koppers Co., 
    22 F.2d 395
    , 397 (3d Cir. 1927) (holding that
    a when a party intentionally withholds evidence within
    his possession before the Patent Office, he may not later
    introduce that evidence in a suit under § 4915); Dowling
    v. Jones, 
    67 F.2d 537
    , 538 (2d Cir. 1933) (explaining that
    in Barrett “the Third Circuit refused to consider evidence
    which the inventor had deliberately suppressed in the
    interference, and used broader language than the exact
    situation required . . . However, it does not follow that it
    would have extended the doctrine to evidence not sup-
    pressed, but merely neglected through the plaintiff's
    slackness in preparation.”); Knutson v. Gallsworthy, 
    164 F.2d 497
    , 509 (D.C. Cir. 1947) (“[I]f no bad faith on the
    part of the profferer is involved, such as deliberate with-
    holding for some tactical reason, the court could receive
    the evidence.”). 3 In many of the cases cited by the Direc-
    3 Post-1952 cases added to the hodgepodge of stan-
    dards. See, e.g., Standard Oil Co. v. Montedison, S.p.A.,
    HYATT   v. KAPPOS                                        22
    tor, the court both admitted and considered the appli-
    cant’s new evidence. See, e.g., Globe-Union, Inc. v. Chi-
    cago Tel. Supply Co., 
    103 F.2d 722
    , 727 (7th Cir. 1939)
    (“We can not escape the strength and the compelling
    influence of the additional evidence that was adduced in
    the district court.”) Some courts held that an applicant’s
    failure to previously introduce the evidence before the
    Patent Office goes to the weight of the evidence, not to its
    admissibility. E.g., Western Electric Co. v. Fowler, 
    177 F. 224
    , 228-29 (7th Cir. 1910); Standard Cartridge Co. v.
    Peters Cartridge Co., 
    77 F. 630
    , 638 (6th Cir. 1896). As we
    explain in greater detail below, when failure to introduce
    the evidence earlier casts doubt as to its credibility or
    reliability, we believe this is the correct approach.
    We are not persuaded by the Director’s argument that
    Congress intended that only evidence that could not have
    reasonably been presented to the Patent Office in the first
    instance is admissible in § 145 proceedings. In view of the
    
    664 F.2d 356
    , 376 (3d Cir. 1981) (rejecting the argument
    that the district court should have required the party to
    explain why it was offering evidence for the first time
    before the district court and holding that “new expert
    testimony is clearly admissible in a section 146 action
    without such justification”); Velsicol Chem. Co. v. Mon-
    santo Co., 
    579 F.2d 1038
     (7th Cir. 1978) (adopting a
    reasonably diligent standard); Heil Co. v. Snyder Indus.
    Inc., 
    763 F. Supp. 422
    , 426 (D. Neb. 1991) (holding that
    new evidence is admissible subject only to the rules of
    evidence). Our court previously recognized: “We are
    aware that this provision has received varying interpreta-
    tions in the circuits. In our view, since an action under 
    35 U.S.C. § 146
     has the hybrid nature of an appeal and a
    trial de novo, the statute authorizes the district court to
    accept all proffered testimony on issues raised by the
    parties during the proceedings below or by the board’s
    decision.” Case v. CPC Int’l, Inc., 
    730 F.2d 745
    , 752 (Fed.
    Cir. 1984).
    23                                         HYATT   v. KAPPOS
    language of the statute and the extensive legislative
    history, we agree with Mr. Hyatt that Congress intended
    that applicants would be free to introduce new evidence in
    § 145 proceedings subject only to the rules applicable to
    all civil actions, the Federal Rules of Evidence and the
    Federal Rules of Civil Procedure.
    C.
    The Director does not dispute that § 145, like its
    predecessor provisions, permits applicants to introduce
    new evidence in the district court proceedings. See, e.g.,
    Dir. Br. at 9, 12, 18. However, the Director contends that
    the applicant is only allowed to introduce new evidence
    that “the applicant could not reasonably have provided to
    the agency in the first instance.” Id. at 9. The Director
    argues that this limitation stems from the rules of equity
    practice applicable to § 4915 actions, which would have
    prohibited an applicant from introducing new evidence
    except in limited circumstances. The Director also asserts
    that the APA and various policy considerations operate to
    impose additional limitations on an applicant’s right to
    introduce new evidence. We address each of these argu-
    ments in turn.
    1.
    The Director argues that the rules of equity practice
    barred an applicant from introducing evidence in a § 4915
    suit if the applicant failed, without reasonable excuse, to
    provide the evidence to the Patent Office in the first
    instance. The Director relies for this proposition on
    Morgan v. Daniels, 
    153 U.S. 120
     (1894), where the Su-
    preme Court characterized a suit under § 4915 as “some-
    thing in the nature of a suit to set aside a judgment.” Id.
    HYATT   v. KAPPOS                                       24
    at 124. The Director argues that a suit to set aside a
    judgment is a specific type of bill in equity used to seek
    reversal of a prior decree or judgment and was called a
    “bill of review.” The Director explains that a court pre-
    sented with a bill of review to overturn a judgment would
    not consider any new evidence unless the plaintiff could
    not have obtained the evidence before the first trial with-
    out reasonable diligence. See Shipman, supra, at § 101, p.
    168. The Director argues that the evidentiary constraints
    applicable to a bill of review applied to actions under §
    4915 and, therefore, asserts that an applicant could not
    introduce any new evidence in a § 4915 action unless he
    could not reasonably have introduced it to the Patent
    Office in the first instance.
    There are several problems with the Director’s reli-
    ance on Morgan and the analogy to a bill of review. The
    Supreme Court’s decision in Morgan does not provide
    support for the Director’s “reasonable excuse” admissibil-
    ity standard. In fact, Morgan does not relate to the
    admissibility of new evidence at all: the parties in that
    case did not seek to introduce any new evidence before the
    Circuit Court. 
    153 U.S. at 122
    . Instead, when the Su-
    preme Court indicated that the suit under § 4915 was
    “something in the nature of a suit to set aside a judg-
    ment,” it was referring to the standard of review applica-
    ble to Patent Office fact findings when no new evidence is
    introduced in the district court. The Supreme Court
    considered what “rule . . . should control the [reviewing]
    court in the determination of this case.” Id. at 123. The
    Court observed that the Circuit Court, which had re-
    quired the plaintiff to provide “a clear and undoubted
    preponderance of proof,” apparently applied the standard
    of review used by “an appellate court in reviewing find-
    ings of fact made by the trial court.” Id. at 123. “The
    [Morgan] Court, in other words, reasoned strongly that a
    25                                          HYATT   v. KAPPOS
    court/court review standard is not proper [for a court
    reviewing Patent Office fact findings]. . . And its reason-
    ing makes clear that it meant those words to stand for the
    court/agency review standard.” Dickinson v. Zurko, 
    527 U.S. 150
    , 159-60 (1999).
    Thus, Morgan is a case about what standard of review
    ought to apply when the district court decides whether an
    applicant is entitled to a patent on exactly the same
    record that was before the Patent Office. When no new
    evidence is introduced, the § 145 action is “something in
    the nature of a suit to set aside a judgment,” and the
    district court reviews the Patent Office fact findings for
    substantial evidence (i.e., according to the court/agency
    standard of review). Morgan offers no guidance on the
    scope of admissibility of evidence in a § 4915 proceeding.
    There are, however, other Supreme Court cases that have
    spoken to the admissibility of evidence in these types of
    proceedings. In Butterworth v. Hoe, 
    112 U.S. 50
     (1884),
    the Supreme Court explained:
    It is thereby provided [in § 4915] that the appli-
    cant may have remedy by bill in equity. This
    means a proceeding in a court of the United
    States having original equity jurisdiction under
    the patent laws, according to the ordinary course
    of equity practice and procedure. It is not a tech-
    nical appeal from the patent-office, like that au-
    thorized in section 4911, confined to the case as
    made in the record of that office, but is prepared
    and heard upon all competent evidence adduced
    and upon the whole merits.
    Id. at 61 (emphasis added).
    HYATT   v. KAPPOS                                        26
    The Butterworth Court identified three circuit court
    cases as exemplifying “the uniform and correct practice in
    the Circuit Courts” with respect to suits under § 4915.
    
    112 U.S. at 61
    . In each of these cases, the Circuit Court
    explicitly recognized that a § 4915 suit was to be heard
    upon all competent evidence that the parties chose to
    introduce, regardless of whether the evidence was or
    could have been provided to the Patent Office. Evidence
    was “competent” for admissibility purposes so long as it
    complied with the “rules and practice of a court of equity.”
    See In re Squire, 
    22 F. Cas. 1015
    , 1016 (C.C.E.D. Mo.
    1877) (“Either party, therefore, is at liberty to introduce
    additional evidence, or rather, to speak more accurately,
    the hearing is altogether independent of that before the
    commissioner, and takes place on such testimony as the
    parties may see fit to produce agreeably to the rules and
    practice of a court of equity.”); Butler v. Shaw, 
    21 F. 321
    ,
    327 (C.C.D. Mass. 1884) (“[§ 4915] contains no provision
    requiring the case to be heard upon the evidence produced
    before the commissioner . . . and, as has been held in this
    and other circuits, the court may receive new evidence,
    and has the same powers as in other cases in equity”);
    Whipple v. Miner, 
    15 F. 117
    , 118 (C.C.D. Mass. 1883) (“[§
    4915] is, plainly, an independent, original jurisdiction
    which is given to the courts”). Admitting evidence in
    accordance with the “ordinary course of equity practice
    and procedure” is admitting evidence in accordance with
    the Federal Rules of Evidence and Civil Procedure.
    The Supreme Court has consistently recognized that
    new evidence may be introduced in these district court
    proceedings. See, e.g., Gandy v. Marble, 
    122 U.S. 432
    , 439
    (1887) (explaining that the § 4915 suit in equity was “not
    a technical appeal from the Patent Office, nor confined to
    the case as made in the record on that office”); Hoover Co.
    v. Coe, 
    325 U.S. 79
    , 83 (1945) (explaining that the bill in
    27                                          HYATT   v. KAPPOS
    equity in a § 4915 action afforded applicants “a formal
    trial . . . on proof which may include evidence not pre-
    sented in the Patent Office”). No Supreme Court case has
    ever placed any limitations on the admissibility of evi-
    dence in a § 145 or § 4915 proceeding apart from the
    ordinary rules applicable to all civil actions. To the
    contrary, the Supreme Court observed that the remedy by
    bill in equity provided by § 4915 “sav[ed] to litigants the
    option of producing new evidence in a court.” Hoover Co.,
    
    325 U.S. at 87
    . Most recently, in Zurko, the Supreme
    Court stated that “[Section 145] permits the disappointed
    applicant to present to the court evidence that the appli-
    cant did not present to the PTO. The presence of such
    new or different evidence makes a factfinder of the dis-
    trict judge.” 
    527 U.S. at 164
    . Our court has likewise held
    that a § 145 applicant is “entitled to” and may “choose to”
    to introduce new evidence in the district court proceed-
    ings. See, e.g., Mazzari v. Rogan, 
    323 F.3d 1000
    , 1004-05
    (Fed. Cir. 2003) (“A section 145 review . . . affords the
    applicant an opportunity to present additional evidence or
    argue the previous evidence afresh” and “[i]f the parties
    choose to present additional evidence to the district court .
    . . the district court would make de novo factual find-
    ings.”) (emphasis added); Fregeau v. Mossinghoff, 
    776 F.2d 1034
    , 1037 (Fed. Cir. 1985) (“The [§145] proceeding,
    however, is not simply an appeal since the parties are
    entitled to submit additional evidence.”) (emphasis
    added).
    To the extent that the Supreme Court precedent offers
    guidance on the admissibility of evidence in these pro-
    ceedings, it indicates that all competent evidence is
    admissible subject only to the ordinary course of equity
    practice and procedure, which is the Federal Rules of
    Evidence and Civil Procedure that are applicable to all
    civil actions. There is no support for the Director’s pro-
    HYATT   v. KAPPOS                                          28
    posed standard, which would allow new evidence only if
    the evidence could not reasonably have been provided to
    the Patent Office.
    The Director’s argument also fails because the bill in
    equity authorized by § 4915 is not a bill in review. The
    Director is correct in his characterization of the admissi-
    bility rules that would apply if a § 145 proceeding was
    nothing more than a bill of review. As the Director points
    out, a party filing a bill of review could introduce new
    evidence only if that evidence “could not have been dis-
    covered and presented by the exercise of due diligence
    before the decree in question was made.” Shipman,
    supra, at § 216; see also Beard v. Burts, 
    95 U.S. 434
    , 436
    (1877). However, the bill in equity authorized by § 4915
    is not a bill of review. A bill in equity was the written
    mechanism that began a judicial proceeding in any court
    of equity. See 1 Street, Federal Equity Practice § 135
    (1909). A bill in equity could be either an original bill,
    which began “an independent suit in equity unconnected
    with any other previous or pending suit in the same
    court,” or a “dependent” bill, which “relate[d] to some
    matter already litigated in the court by the same parties.”
    Id. § 141, § 142. A bill of review was a particular type of
    dependent bill. Id. at § 146.
    The bill in equity authorized by § 4915 is fundamen-
    tally different from a bill of review. Although the § 4915
    action is “in fact, and necessarily, a part of the application
    for a patent,” Gandy, 
    122 U.S. at 439
    , it is not a bill of
    review. A bill of review was a mechanism by which a
    court could reverse its own decree. 2 Street, Federal
    Equity Practice § 2121 (1909) (“that a bill of review will lie
    only in the court where the decree to be reversed was
    rendered is subject to no exception whatever”) (emphasis
    added). The Supreme Court explained the distinction in
    29                                          HYATT   v. KAPPOS
    Barrow v. Hunton, 
    99 U.S. 80
     (1878): a bill in equity
    authorized “the investigation of a new case arising upon
    new facts, although having relation to the validity of an
    actual judgment or decree,” while a bill of review involved
    “a mere revision of errors and irregularities, or of the
    legality and correctness of the judgments and decrees.”
    
    Id. at 82-83
    . Because the bill in equity under § 4915 was
    not a bill of review, the evidentiary constraints peculiar to
    a bill of review do not control the admissibility of evidence
    in a § 145 civil action. Rather, the action is a civil action
    in which the district court is authorized to “adjudge that
    such applicant is entitled to receive a patent for his inven-
    tion . . . as the facts of the case may appear.” 
    35 U.S.C. § 145
    . While a § 145 proceeding is not completely inde-
    pendent from the prosecution process in the Patent Office,
    neither is it comparable to a bill of review.
    Certainly, the proceedings before the Patent Office
    remain relevant in a § 145 action. As we explained in
    Fregeau, “in the absence of additional evidence affecting a
    particular finding,” the district court must apply the
    court/agency standard of review to that fact finding. 
    776 F.2d at 1038
    . This deferential standard of review applies
    in recognition that the fact findings were made by the
    Patent Office—the knowledgeable agency charged with
    assessing patentability. “On the other hand, where new
    evidence is presented to the district court on a disputed
    fact question, a de novo finding will be necessary to take
    such evidence into account together with the evidence
    before the board.” 
    Id.
     We have also concluded that issues
    (and evidence relating to new issues) that were not raised
    in the Patent Office proceedings generally may not be
    raised in a § 145 proceeding. See Conservolite, Inc. v.
    Widmayer, 
    21 F.3d 1098
    , 1102 (Fed. Cir. 1994) (listing
    circumstances in which new issues may be raised before
    the district court). Moreover, as we observed in Fregeau,
    HYATT   v. KAPPOS                                         30
    in adjudicating entitlement to a patent, the district court
    must consider the record before the Patent Office as well
    as any new evidence admitted by the applicant. 
    776 F.2d at 1038
    . Although the Patent Office proceedings do
    impact § 145 proceedings in these various ways, we
    conclude that, consonant with the language of the statute,
    legislative history, and Supreme Court precedent, the
    only limitations on the admissibility of evidence in § 145
    proceedings (for issues raised before the Patent Office) are
    the Federal Rules of Evidence and Civil Procedure.
    Although we reject the Director’s proposed restriction
    on admissibility, the district court may consider the
    proceedings before and findings of the Patent Office in
    deciding what weight to afford an applicant’s newly-
    admitted evidence. As with any evidence introduced in a
    civil action, the weight given to evidence introduced by an
    applicant in a § 145 action falls within the discretion of
    the district court. Should the facts of a particular case
    cast suspicion on new evidence that an applicant failed to
    introduce before the Patent Office, the district court in a
    § 145 action would be within its discretion to give that
    evidence less weight. Indeed, as discussed above, courts
    have considered an applicant’s failure to introduce evi-
    dence before the Patent Office in determining what
    weight to afford to the evidence. See Standard Cartridge
    Co., 77 F. at 638 (concluding that the evidentiary weight
    of new witness testimony on oral declarations supposedly
    made by the patentee who died and thus lost all opportu-
    nity to explain or deny was “much impaired from the fact
    that . . . it was not introduced during the interference
    proceedings”); Western Electric Co., 177 F. at 228-29
    (finding new recollections unconvincing: “And how comes
    it that the testimony of these witnesses, at this later date,
    comes out with so much greater definiteness than it came
    out at the earlier date, when, under ordinary circum-
    31                                          HYATT   v. KAPPOS
    stances, the event, being much more recent, ought to have
    been fresher in the witnesses’ minds?”) The practice of
    giving less weight to evidence whose reliability is im-
    pacted by an applicant’s failure, without explanation, to
    provide it to the Patent Office, is entirely proper, and this
    practice is fully consistent with the rule that we announce
    today.
    Quite separate from the Director’s proposal, the dis-
    sent would have us rely on Citizens to Preserve Overton
    Park v. Volpe, 
    401 U.S. 402
    , 414-20 (1971) to hold that the
    only new evidence that we should allow is that which the
    applicant could not bring to the Patent Office due to the
    inadequacies of the Patent Office’s procedures. Dissent 7-
    9. First, the Director expressly rejects the applicability of
    Overton Park to § 145. Dir. Br. 19, n.4 (“We do not con-
    tend that an applicant’s ability to introduce new evidence
    under Section 145 is limited to circumstances in which
    ‘agency factfinding procedures are inadequate.’” citing
    Overton Park). Additionally, the statute in question in
    Overton Park only provided for “judicial review” of agency
    action. 
    401 U.S. at 410
    . Section 145 specifically permits
    a “civil action” where the district court may adjudge
    entitlement to a patent “as the facts in the case may
    appear.” Where the statute permits a “civil action” in
    relation to agency actions, the Supreme Court has held
    that this amounts to a trial de novo. See Chandler v.
    Roudebush, 
    425 U.S. 840
    , 845-46, 862 (1976) (“Here, by
    contrast, there is ‘specific statutory authorization’ of a
    district court ‘civil action,’ which both the plain language
    of the statute and the legislative history reveal to be a
    trial de novo.”). Here, the language of the statute and
    legislative history support the admission of new evidence
    in § 145 actions subject only to the Federal Rules of
    Evidence and Civil Procedure.
    HYATT   v. KAPPOS                                      32
    2.
    With respect to the Director’s APA argument, the Di-
    rector does not assert that the APA controls the admissi-
    bility of evidence in a § 145 action. To the contrary, the
    Director consistently acknowledges throughout his brief
    that new evidence is admissible in a § 145 action—unlike
    a typical APA action, in which judicial review is strictly
    limited to the administrative record. The Director’s
    argument instead is that when no new evidence is admit-
    ted in a § 145 action, the district court must review the
    fact findings of the Patent Office on the administrative
    record and subject to the APA.
    This is an uncontroversial proposition: it is well-
    settled that a reviewing court must apply the APA’s
    court/agency standard of review to Patent Office fact
    findings when no new evidence is admitted in a § 145
    action. If the parties to a § 145 action do not introduce
    any new evidence before the district court, the court
    reviews the case on the same record presented to the
    agency and the reviewing court must apply the APA’s
    substantial evidence standard to Patent Office fact find-
    ings. See Mazzari, 
    323 F.3d at 1005
    .
    But when a party to a § 145 action does introduce new
    evidence, the court’s review is no longer limited to the
    administrative record. Instead, the court must consider
    the new evidence in addition to the record, and “[t]he
    presence of such new or different evidence makes a fact-
    finder of the district judge.” Zurko, 
    527 U.S. at 164
    .
    Because the court must determine the weight and import
    of this new evidence, we have held that the district court
    in a § 145 action must make de novo fact findings with
    respect to factual issues to which the new evidence re-
    lates. Fregeau, 
    776 F.2d at 1038
     (“where new evidence is
    33                                          HYATT   v. KAPPOS
    presented to the district court on a disputed fact question,
    a de novo finding will be necessary to take such evidence
    into account together with the evidence before the board”);
    see also Mazzari, 
    323 F.3d at 1005
     (“if the parties choose
    to present additional evidence to the district court [§ 145
    action] . . . the district court would make de novo factual
    findings if the evidence is conflicting [with the adminis-
    trative record]”). The Director does not dispute that these
    standards of review apply in a § 145 action.
    At most, the Director argues that the principles of
    deference to agency fact finding inherent in the APA
    scheme would tend to support more restrictions on the
    admissibility of evidence. However, this deference is
    already embodied in the standard of review applicable in
    a § 145 action. When the court reviews a case on the
    administrative record—that is, when no party introduces
    new evidence—the court applies the APA standard of
    review to Patent Office fact findings. Mazzari, 
    323 F.3d at 1005
    . When new evidence is introduced, the court acts
    as a factfinder with respect to that new evidence and
    would make de novo fact findings if the evidence conflicts
    with any related Patent Office finding. Id.; see also
    Zurko, 
    527 U.S. at 164
    . However, the court must still
    consider the administrative record in making its fact
    findings; we have made clear that the court’s de novo
    finding must “take [new] evidence into account together
    with the evidence before the board.” Fregeau, 
    776 F.2d at 1038
    . Therefore, the dual standards of review applicable
    in a § 145 action maintain an appropriate level of defer-
    ence to agency findings, while preserving to the court its
    role as factfinder with respect to new evidence.
    HYATT   v. KAPPOS                                       34
    3.
    Finally, the Director presents various policy consid-
    erations in support of its proposal that evidence is not
    admissible unless it could not have reasonably been
    presented to the Patent Office first. The Director first
    argues that requiring plaintiffs to completely present all
    arguments and evidence to the agency in the first in-
    stance protects agency authority and promotes judicial
    efficiency. Although we agree that encouraging full
    disclosure to administrative tribunals is sound policy,
    Congress—not the Federal Circuit—must decide how best
    to do this. Congress heard extensive testimony on the
    advantages and disadvantages of providing applicants
    with a civil action to obtain a patent. In fact, Congress
    heard testimony on this very issue: the former Assistant
    Commissioner of Patents argued that § 4915 “should be
    cut out entirely for ex parte applications,” to force an
    applicant to introduce “all the testimony pertinent to his
    case” to the Patent Office. To Amend Section 52, 69th
    Cong., 1st Sess., at 76. This was a policy decision commit-
    ted to the sole discretion of Congress; we may not replace
    Congress’ judgment with our own.
    The Director asserts that if we do not limit an appli-
    cant’s right to introduce new evidence in a § 145 action,
    applicants will inevitably choose this route of review over
    a direct appeal under § 141 or will withhold evidence from
    the Patent Office to avoid generating adverse prosecution
    history. To deter applicants from exactly the type of
    procedural gaming that concerns the Director, Congress
    imposed on the applicant the heavy economic burden of
    paying “[a]ll the expenses of the proceedings” regardless
    of the outcome. 
    35 U.S.C. § 145
    . An applicant has every
    incentive to provide the Patent Office with the best evi-
    35                                           HYATT   v. KAPPOS
    dence in its possession, to obtain a patent as quickly and
    inexpensively as possible. “It would be counterintuitive
    for an applicant to deliberately withhold non-cumulative
    evidence that would help persuade the BPAI to reverse
    the examiner’s rejection, and instead . . . present it later
    on in a civil action when the party (as plaintiff) would be
    obligated to pay all the expenses -- including the defen-
    dant PTO’s expenses.” NYIPLA Br. at 13; see also IPO
    Br. at 17 (“applicants proceeding before the PTO strike a
    strategic balance, submitting evidence likely sufficient to
    obtain a patent while avoiding overburdening the PTO”).
    Indeed, the fact that the vast majority of applicants
    pursue an on-the-record appeal instead of a § 145 action
    indicates that applicants generally consider the evidence
    before the Patent Office to be sufficient. Where an appli-
    cant decides to pursue a § 145 action, this may reflect a
    belief that the application at issue is or could be especially
    commercially significant; in such a case, the applicant
    likely believes that the additional cost of a § 145 action
    may be merited. See AIPLA Br. at 1.
    Next, the Director asserts that interpreting § 145 to
    allow applicants to freely introduce new evidence before
    the district court would disturb the rule that arguments
    waived in administrative proceedings may not be raised
    for the first time in federal court. We have held that, in
    general, parties may not raise issues in the district court
    that were not raised during the proceedings before the
    Patent Office or by the Board’s final decision. Conser-
    volite, 
    21 F.3d at 1102
     (listing exceptions where courts
    may allow new evidence on new issues). However, this
    rule does not preclude parties from introducing additional
    evidence as to issues that were raised before the Patent
    Office. Here, the issue is written description—the subject
    of Mr. Hyatt’s excluded declaration—and was raised
    HYATT   v. KAPPOS                                        36
    before the Patent Office. Therefore, the doctrine of waiver
    is not applicable to this case.
    D.
    We hold that new evidence is admissible in a civil ac-
    tion under 
    35 U.S.C. § 145
    , subject only to the Federal
    Rules of Evidence and Federal Rules of Civil Procedure.
    We now consider whether, under this standard, the
    district court abused its discretion in excluding Mr.
    Hyatt’s declaration.
    The district court found that Mr. Hyatt’s failure to ex-
    plain why he did not submit his declaration to the Patent
    Office was negligent. Stating that it “need not consider
    evidence negligently submitted after the end of adminis-
    trative proceedings,” the court excluded Mr. Hyatt’s
    declaration. Hyatt, 
    2005 U.S. Dist. LEXIS 45319
    , at *26.
    The district court erred in determining that Mr. Hyatt’s
    negligence affected admissibility and therefore abused its
    discretion in excluding the declaration. 4
    CONCLUSION
    For the reasons stated herein, the district court
    abused its discretion in excluding Mr. Hyatt’s declaration.
    We therefore vacate the judgment of the District Court for
    the District of Columbia and remand for further proceed-
    ings consistent with this opinion.
    VACATED AND REMANDED
    4    Nothing in In re Alton, 
    76 F.3d 1168
     (Fed. Cir.
    1996) is inconsistent with our decision today. An appli-
    cant may respond to a written description rejection in
    whatever way the applicant deems effective.
    United States Court of Appeals
    for the Federal Circuit
    __________________________
    GILBERT P. HYATT,
    Plaintiff-Appellant,
    v.
    DAVID KAPPOS, DIRECTOR, PATENT AND
    TRADEMARK OFFICE,
    Defendant-Appellee.
    __________________________
    2007-1066
    __________________________
    Appeal from the United States District Court for the
    District of Columbia in Case No. 03-CV-901, Judge Henry
    H. Kennedy, Jr.
    __________________________
    NEWMAN, Circuit Judge, concurring in part, dissenting in
    part.
    I join the en banc court’s holding that new evidence may
    be provided in a civil action brought in the district court
    under 
    35 U.S.C. §145
    . However, the court also holds that
    when no new evidence is provided, the findings and rulings
    of the PTO receive the same deferential treatment in the
    district court as would apply if the cause were not a civil
    action under section 145, but instead were an Administra-
    tive Procedure Act direct appeal to the Federal Circuit
    under 
    35 U.S.C. §141
    . That is not the statutory plan.
    HYATT   v. KAPPOS                                            2
    The statutory plan is designed to differ from such a du-
    plicative procedure, not to create it. Nonetheless, the court
    today holds that for those issues for which the applicant
    relies on the same evidence as was before the patent exam-
    iner, the ruling of the PTO is not determined de novo but is
    reviewed with APA deference, identically to the section 141
    appeal, except that the decision is initially made by one
    judge in the district court, en route to three-judge review if
    appeal is then taken to the Federal Circuit. No party pre-
    sented or even contemplated such a redundant procedure,
    and no amicus discussed it. It is contrary to statute, to
    precedent, and to almost two centuries of legislative policy.
    Section 145 requires the district court to determine
    whether “such applicant is entitled to receive a patent for
    his invention . . . as the facts in the case may appear.” Since
    it is a de novo proceeding, the PTO findings and fact-based
    rulings are not reviewed on the deferential “substantial
    evidence” standard, and the methodology of analysis of the
    evidence does not depend on whether the PTO had also
    received the same evidence. Although an applicant who
    chooses a section 145 civil action is quite likely to present
    new evidence as to some issues, on other issues the appli-
    cant may choose to reargue the evidence that was before the
    PTO.
    Usually the evidence before the PTO consists of refer-
    ences cited during examination—with the applicant argu-
    ing, in a section 145 action, that the PTO misweighed or
    misapplied or misunderstood the evidence. Such issues are
    often present in a section 145 action, where they receive de
    novo determination, whether or not new evidence is adduced
    in the district court. The purpose of the section 145 pro-
    ceeding is to achieve fresh judicial determination of pat-
    entability issues that had been decided by the Patent Office,
    and to conduct this determination de novo on the evidence
    3                                             HYATT   v. KAPPOS
    before the court, whether or not the same evidence or all of
    it was before the examiner. Thus, although this court’s
    affirmation of the principle of the de novo section 145 action
    is salutary, somehow a new flaw has crept in. The court’s
    promulgation of a different intellectual mechanism, depend-
    ing on whether an issue did or did not receive evidence in
    addition to that which was before the examiner, creates a
    convoluted analytical process, a burden on the court as well
    as on objective analysis.
    As the en banc court explains, the legislative purpose of
    the equity action was to assure that the courts had the last
    word as to entitlement to a patent. For a brief period after
    patent examination was renewed in 1836, only priority
    contests between competing inventors had judicial recourse.
    The Patent Act of 1839 extended judicial participation to
    “all cases where patents are refused for any reason what-
    ever.” As the patent statutes continued to receive legisla-
    tive attention, the Court explained in Butterworth v. Hoe,
    
    112 U.S. 50
    , 61 (1884):
    It is thereby provided that the applicant may have
    remedy by bill in equity. This means a proceeding
    in a court of the United States having original eq-
    uity jurisdiction under the patent laws, according to
    the ordinary course of equity practice and proce-
    dure. It is not a technical appeal from the patent-
    office . . . confined to the case as made in the record
    of that office, but is prepared and heard upon all
    competent evidence adduced, and upon the whole
    merits.
    The Court observed that “such de novo determination has
    been the uniform and correct practice in the circuit courts.”
    Id.; see, e.g., Ex parte Squire, 
    22 F. Cas. 1015
    , 1016
    (C.C.E.D. Mo. 1877) (“[T]he hearing is altogether independ-
    HYATT   v. KAPPOS                                           4
    ent of that before the commissioner, and takes place on such
    testimony as the parties may see fit to produce agreeably to
    the rules and practice of a court of equity.”).
    The Court’s decision in Dickinson v. Zurko, 
    527 U.S. 150
    (1999), applying the Administrative Procedure Act’s stan-
    dard of review to direct appeals to the Federal Circuit on the
    administrative record, did not deal with the section 145 civil
    action. Indeed, the APA recognized the preservation of
    previously existing judicial review mechanisms including
    those that provided for a trial de novo, stating that “[t]he
    form of the proceeding for judicial review is the special
    statutory review proceeding relevant to the subject matter
    in a court specified by the statute.” 
    5 U.S.C. §703
    . The APA
    states that nothing in the judicial review provisions of the
    APA “limit[s] or repeal[s] additional requirements imposed
    by statute or otherwise recognized by law.” 
    5 U.S.C. §559
    .
    Neither the APA nor Zurko obliterated the purpose or
    changed the structure of the section 145 action as a full de
    novo proceeding. In preserving this traditional path, anal-
    ogy is seen to tax refund suits in the district courts or the
    Court of Federal Claims, where “a refund suit is a de novo
    proceeding.” Democratic Leadership Council, Inc. v. United
    States, 
    542 F. Supp. 2d 63
    , 70 (D.D.C. 2008); see Vons Cos. v.
    United States, 
    51 Fed. Cl. 1
    , 5 (2001) (“We begin with the
    axiomatic principle that tax refund cases are de novo pro-
    ceedings. Lewis v. Reynolds, 
    284 U.S. 281
    , 283 (1932).
    Factual issues in such cases ‘are tried . . . with no weight
    given to subsidiary factual findings made by the Service in
    its internal administrative proceedings.’ Cook v. United
    States, 
    46 Fed. Cl. 110
    , 113 (2000). See also Dixon v. United
    States, 
    381 U.S. 68
    , 74–75 (1965).”).
    Such a de novo path, whether or not on the same evi-
    dence that was before the examiner, has long characterized
    5                                              HYATT   v. KAPPOS
    section 145 actions and its predecessor bills in equity. See,
    e.g., Bernardin v. Northall, 
    77 F. 849
    , 851 (C.C.D. Ind. 1897)
    (“The constitution and laws give a property right in his
    invention or discovery to an inventor, and it was the mani-
    fest legislative intent that such inventor should not be
    deprived of his property right in his invention until he had
    had his day in a court in which the party aggrieved by the
    determination of an executive officer might pursue his
    remedy judicially, according to the practice of a court of
    chancery.”).
    Legislation concerning the bill of equity/civil action con-
    sistently recognized that the proceeding is a “new suit.” For
    example, in connection with the Patent Act of 1927 the
    Chairman of the House Committee on Patents, Congress-
    man Albert H. Vestal, stated “if a party feels aggrieved, he
    can bring his suit in the equity court, but it is not an appeal.
    It is the bringing of a new suit.” To Amend Section 52 of
    Judicial Code and Other Statutes Affecting Procedure in
    Patent Office: Hearings on H.R. 6252 and H.R. 7087 Before
    the H. Comm. on Patents, 69th Cong., 1st Sess. 36 (1926).
    The issues of patentability are determined in accordance
    with the laws of patentability, on original jurisdiction undis-
    turbed by whether the same evidence was previously before
    the patent examiners. As summarized by Emerson String-
    ham, Patent Interference Equity Suits §7942, at 69 (1930):
    “A suit by a defeated applicant is an action de novo for the
    purpose of securing a patent.”
    No rule or protocol requires that the civil suit cannot re-
    ceive de novo adjudication based on the same documentary
    evidence that was before the Patent Office. See Central Ry.
    Signal Co. v. Jackson, 
    254 F. 103
    , 105 (E.D. Pa. 1918)
    (observing that although the purpose of a proceeding under
    section 4915 “is to secure the issue of a patent, the issue of
    which has been refused, it does not seek that issue through
    HYATT   v. KAPPOS                                              6
    a reversal of the ruling first made, but through an inde-
    pendent finding that the applicant is entitled upon the
    merits of his application to a patent”). The Court has re-
    peatedly confirmed this understanding. See In re Hein, 
    166 U.S. 432
    , 439 (1897) (“The bill in equity provided for by
    section 4915 is wholly different from the proceeding by
    appeal from the decision of the commissioner . . . . The one
    is in the exercise of original, the other of appellate, jurisdic-
    tion.”); Gandy v. Marble, 
    122 U.S. 432
    , 439 (1887) (“[T]he
    proceeding by bill in equity, under section 4915, on the
    refusal to grant an application for a patent, intends a suit
    according to the ordinary course of equity practice and
    procedure, and is not a technical appeal from the patent-
    office, nor confined to the case as made in the record of that
    office, but is prepared and heard upon all competent evi-
    dence adduced, and upon the whole merits . . . .” (citing
    Butterworth, 
    112 U.S. at 61
    )).
    The applicant may not wish, or need, to present new
    evidence as to every issue of patentability. P.J. Federico
    observed in his definitive article, “Evolution of Patent Office
    Appeals,” that “[t]he bill in equity is not a technical appeal
    from a decision of the Patent Office, but is ‘a suit according
    to the ordinary course of equity practice and procedure.’” 22
    J. Pat. Off. Soc’y 838, 937 (1940). Such “ordinary course”
    takes up the issues that the examiner had decided adversely
    to the applicant, on whatever evidence the applicant and the
    Patent Office present to the district court. I have come upon
    no legislative or precedential hint that there should be
    judicial deference in the equity action to the examiner’s
    findings for those issues upon which no new evidence is
    presented to the court.
    The history of section 145 differs from that for priority
    contests between competing inventors, as discussed in
    Morgan v. Daniels, 
    153 U.S. 120
     (1894), now relied on by
    7                                             HYATT   v. KAPPOS
    this court as meaning that in the absence of new evidence
    “the district court reviews the Patent Office fact findings for
    substantial evidence (i.e., according to the court/agency
    standard of review).” Maj. Op. 25. That interpretation is
    contrary to Morgan v. Daniels itself, for the Court there
    recognized that it was dealing with a different statute,
    “where the question decided in the Patent Office is one
    between contesting parties as to priority of invention.” 
    153 U.S. at 125
    . Judicial review of priority contests is now
    codified at 
    35 U.S.C. §146
    , which expressly provides for
    admission of the PTO record to “have the same effect as if
    originally taken and produced in the suit.” There is no
    similar provision in section 145, which instead requires the
    district court to adjudge entitlement to a patent “as the facts
    in the case may appear.” Section 145 calls upon the inde-
    pendent judgment of the district court, whether the evi-
    dence before the court augments or simply repeats the
    evidence that was before the Patent Office. 1
    This court’s new dual standard of evidentiary analysis
    in section 145 actions will not only come as a surprise to
    practitioners, but raises new problems of adjudication, for
    the weight of findings on various issues often must be
    balanced, in reaching the ultimate determination of pat-
    entability. I must, respectfully, dissent from this additional
    and unnecessary encumbrance on the patenting process.
    1     The PTO Solicitor and my colleagues in dissent ar-
    gue that applicants will deliberately withhold evidence in
    their possession, in order to spring it on the district court
    under section 145. I share the view of the amici curiae that
    it is unlikely that applicants will withhold winning evidence
    from the examiner, in favor of a multi-year and expensive
    civil action in the district court.
    United States Court of Appeals
    for the Federal Circuit
    __________________________
    GILBERT P. HYATT,
    Plaintiff-Appellant,
    v.
    DAVID KAPPOS, DIRECTOR, PATENT AND
    TRADEMARK OFFICE,
    Defendant-Appellee.
    __________________________
    2007-1066
    __________________________
    Appeal from the United States District Court for the
    District of Columbia in case No. 03-CV-901, Judge Henry
    H. Kennedy, Jr.
    ON PETITION FOR REHEARING EN BANC
    __________________________
    DYK, Circuit Judge, with whom GAJARSA, Circuit Judge,
    joins, dissenting.
    In my view today’s majority decision reflects a re-
    markable departure from settled principles of administra-
    tive law.   The majority holds today that a patent
    applicant may decline to present his evidence supporting
    a patent application to the Patent and Trademark Office
    (“PTO”), the expert agency charged by Congress with
    reviewing patent applications. Instead, he may elect to
    present that evidence to a district court in a de novo
    proceeding. As the majority itself states, “We hold that 35
    HYATT   v. KAPPOS 
    2 U.S.C. § 145
     imposes no limitation on an applicant’s right
    to introduce new evidence before the district court, apart
    from the evidentiary limitations applicable to all civil
    actions . . . .” Maj. op. at 5 (emphasis added). Moreover,
    when the district court considers that new evidence, it
    owes no deference to the PTO’s resolution of the fact
    issues. Rather, the district court makes de novo findings
    of fact. See 
    id.
    The established administrative law standard, embod-
    ied in section 706 of the Administrative Procedure Act
    (“APA”), 
    5 U.S.C. § 706
    , requires judicial review on the
    agency record and submission of all relevant evidence to
    the agency. In general, it permits supplementation in
    court only when agency procedures are inadequate. See
    Citizens to Preserve Overton Park v. Volpe, 
    401 U.S. 402
    ,
    414–20 (1971). Here, the agency procedures are inade-
    quate only insofar as they do not provide for live testi-
    mony.
    There is no question that Hyatt’s affidavit evidence
    here could have been submitted to the Patent Office
    during the examination. The PTO rules specifically
    provide that “[w]hen any claim of an application . . . is
    rejected or objected to, any evidence submitted to traverse
    the rejection or objection on a basis not otherwise pro-
    vided for must be by way of an oath or declaration under
    this section.” 
    37 C.F.R. § 1.132
    . The Manual of Patent
    Examining Procedures recognizes that section 1.132 “sets
    forth the general policy of the Office consistently followed
    for a long period of time of receiving affidavit evidence
    traversing rejections or objections.” MPEP § 716 (8th ed.
    Rev. 7, Sept. 2008). 1 But the examination proceedings are
    1   The PTO rules also provide that affidavits may be
    submitted after final rejection “upon a showing of good
    and sufficient reasons why the affidavit or other evidence
    3                                           HYATT   v. KAPPOS
    based on a paper record (except for interviews with the
    examiner). There is no provision for the receipt of live
    testimony from witnesses.
    As discussed below, while section 145 contemplates
    the introduction of live testimony (because that testimony
    could not be submitted to the PTO), section 145 does not
    provide for a trial de novo or excuse the applicant from
    submitting affidavit evidence to the PTO. Limiting new
    evidence in the section 145 action to evidence, such as live
    testimony, that could not be presented to the PTO in the
    first instance would recognize that section 145 is fully
    consistent with traditional administrative law standards.
    Allowing a trial de novo in the district court deni-
    grates the important expertise of the PTO, is contrary to
    established principles of administrative law, finds no
    support in the language of the statute, and is contrary to
    decisions of at least five other circuits. The majority
    opinion invites applicants to deliberately withhold evi-
    dence from the PTO in favor of a more hospitable district
    court forum. Today’s decision reflects yet another mis-
    guided effort to craft special rules for patent cases that
    the Supreme Court in other cases has held to be imper-
    missible. See eBay v. MercExchange, LLP, 
    547 U.S. 388
    (2006) (overturning this court’s special test for issuing
    permanent injunctions in patent cases); MedImmune v.
    Genetech, Inc., 
    549 U.S. 118
     (2007) (rejecting this court’s
    Declaratory Judgment Act test). The majority decision is
    all the more remarkable because the Court has previously
    rejected our efforts to craft a special rule for review of
    PTO decisions in Dickinson v. Zurko, 
    527 U.S. 150
    , 152
    (1999), holding that review under section 141 must pro-
    is necessary and was not earlier presented.” 
    37 C.F.R. § 1.116
    (e).
    HYATT   v. KAPPOS                                          4
    ceed under the established administrative law substantial
    evidence standard. I respectfully dissent.
    I
    The majority speaks hardly at all to the important ex-
    pert role that the PTO plays in patent examination pro-
    ceedings. The statute provides a variety of grounds for
    rejecting a patent application. In each case the inquiry is
    either entirely factual or has factual components. For
    example, questions involving anticipation, obviousness,
    indefiniteness, written description, and enablement
    typically involve fact questions that are beyond the
    knowledge of an ordinary layman, and must be addressed
    by those skilled in the particular art.
    The PTO examiner corps and the Board of Patent Ap-
    peals and Interferences (“Board”) possess such expertise,
    and the examination process is carefully structured to
    utilize that expertise. For example, when a patent appli-
    cation is received, the proposed invention is classified so
    that it can be given to the proper art unit, which then
    determines whether the application “properly belongs” in
    the unit and assigns the application to an examiner
    within the art unit with the expertise necessary to con-
    duct a field search of the prior art. See MPEP §§ 903.02,
    903.08, 904 (8th ed. Rev. 7, Sept. 2008). With respect to
    the Board, its Standard Operating Procedures state that
    the Chief Judge should “designate judges as the merits
    panel to decide ex parte appeals based upon their legal
    and technical expertise.” B.P.A.I., Standard Operating
    Procedure 1 (Revision 13) (2009), available at
    http://www.uspto.gov/web/offices/dcom/bpai/sop1.pdf.
    The importance of PTO expertise in the examination
    process is confirmed by the history of the statute. Al-
    though the original patent act provided for examination of
    patents, Act of Apr. 10, 1790, ch. 7, 
    1 Stat. 109
    , 112, three
    5                                            HYATT   v. KAPPOS
    years later, Congress abolished the examination of pat-
    ents, and for the next three decades the United States
    operated under a regime of patent registration. See Act of
    Feb. 21, 1793, ch. 11, § 1, 
    1 Stat. 318
    ; P.J. Federico,
    Evolution of Patent Office Appeals, 22 J. Pat. Off. Soc'y
    838 (1940). This approach was found to be entirely unsat-
    isfying.
    The legislative history of the 1836 Act, substituting
    an examination system for the registration system, cites
    the following evils of the existing registration system:
    [1] A considerable portion of all the patents
    granted are worthless and void . . . ; [2] The coun-
    try becomes flooded with patent monopolies, em-
    barrassing to bona fide patentees, whose rights
    are thus invaded on all sides . . . ; [3] Out of this
    interference and collision of patents and privi-
    leges, a great number of lawsuits arise, which are
    daily increasing in alarming degree, onerous to
    the courts, ruinous to the parties, and injurious to
    society; [4] It opens the door to frauds, which have
    already become extensive and serious.
    S. Rept. No. 24-338, at 3 (1836). In the new law in 1836,
    Congress created the Patent Office and the post of Com-
    missioner of Patents, and this was intended to “establish
    a check upon the granting of patents, allowing them to
    issue only for such inventions as are in fact new and
    entitled, by the merit of originality and utility, to be
    protected by law.” 
    Id. at 4
    .
    The system created by Congress relied heavily on the
    expertise of the Commissioner and his staff who were
    responsible for evaluating the merits of patent applica-
    tions. See Act of July 4, 1836, ch. 357 at §§ 2, 7, 5 Stat.
    HYATT   v. KAPPOS                                         6
    117, 118–20. As the legislative history reveals, the pur-
    pose of the act was to bring specialized expertise to bear
    on questions of patentability:
    The duty of examination and investigation neces-
    sary to a first decision at the Patent Office, is an
    important one, and will call for the exercise and
    application of much scientific acquirement and
    knowledge of the existing state of the arts in all
    their branches, not only our own, but in other
    countries.    Such qualifications in the officers
    charged with the duty, will be the more necessary
    and desirable, because the information upon which
    a rejection is made at the office, will be available
    in the final decision. It becomes necessary, then,
    to give the Patent Office a new organization, and
    secure to it a character altogether above a mere
    clerkship. The competency and efficiency of its of-
    ficers should correspond with their responsibility,
    and with the nature and importance of the duties
    required of them.
    S. Rep. No. 24-338, at 4 (emphases added). An applicant
    dissatisfied with the Commissioner's decision could ap-
    peal to a “board of examiners” appointed by the Secretary
    of State. In creating the Board, Congress also drew on the
    expertise of those skilled in the art. At least one board
    member was “to be selected, if practicable and convenient,
    for his knowledge and skill in the particular art, manufac-
    ture, or branch of science to which the alleged invention
    appertains.” Act of July 4, 1836, ch. 357 at § 7, 5, Stat.
    117, 119–20. The de novo standard in today’s decision
    will allow applicants to bypass the PTO expertise that
    7                                           HYATT   v. KAPPOS
    Congress viewed as critical to effective patent examina-
    tion. 2
    II
    Today’s decision not only departs from the Congres-
    sional design for the examination of patents. It also
    departs from settled principles of administrative law
    applicable to expert agency review generally and to the
    PTO in particular. The Supreme Court has emphasized
    that in general the PTO should be treated like other
    administrative agencies; that patent cases are subject to
    the same general administrative law principles under the
    APA; and that departure from those principles requires
    clear statutory language––language that is absent here.
    See Zurko, 
    527 U.S. at
    161–65; In re Comiskey, 
    554 F.3d 967
    , 974 (Fed. Cir. 2009).
    2   Allowing the applicant to bypass PTO expertise is
    particularly problematic where, as here, the applicant
    submitted multiple applications over a long period with
    multiple claims and multiple rejections. The ’702 applica-
    tion at issue in this case is one of at least 39 identical
    applications filed by Hyatt in 1995. Appellee’s Brief at 3.
    Indeed, Hyatt appears to have a long history before the
    Board as well as this court. See, e.g., Hyatt v. Dudas, 
    492 F.3d 1365
    , 1371 (Fed. Cir. 2007) (rejecting Hyatt’s claim
    that the examiner failed to establish a prima facie case for
    a lack of written description); In re Hyatt, 
    211 F.3d 1367
    ,
    1371 (Fed. Cir. 2000) (rejecting Hyatt’s claim that the
    Board failed to analyze the claims on an element-by-
    element and claim-by-claim basis and affirming the
    Board’s anticipation determination); In re Hyatt, No. 87-
    1597, 
    1988 WL 57813
    . at *2 (Fed. Cir. 1988) (holding that
    the examiner raised substantial questions concerning
    enablement, shifting the burden to applicant, who failed
    to offer any competent evidence to overcome the exam-
    iner’s prima facie case).
    HYATT   v. KAPPOS                                        8
    Except in very rare circumstances, judicial review of
    administrative action is based on the agency record. See,
    e.g., Camp v. Pitts, 
    411 U.S. 138
    , 141–42 (1973); Overton
    Park, 
    401 U.S. at
    414–20; Axiom Res. Mgmt., Inc. v.
    United States, 
    564 F.3d 1374
    , 1381 (Fed. Cir. 2009) (“The
    focus of judicial review of agency action remains the
    administrative record, which should be supplemented
    only if the existing record is insufficient to permit mean-
    ingful review consistent with the APA.”); 33 Wright &
    Koch, Federal Practice and Procedure: Judicial Review of
    Administrative Action § 8306 (2006) (“[E]xcept in the rare
    case, review in a federal court must be based on the
    record before the agency and, hence, a reviewing court
    may not go outside the administrative record.”).
    As the Supreme Court stated in Overton Park, the cir-
    cumstances under which de novo review of factual issues
    is appropriate are “narrow” indeed. 
    401 U.S. at 414
    . One
    example of such an exception is when “the agency fact-
    finding procedures are inadequate.” 3 
    Id. at 415
    . This
    same standard could apply to PTO review. As noted
    earlier, the PTO in examination proceedings generally
    can receive affidavit evidence but cannot receive live
    testimony. The PTO agrees that in such circumstances
    live testimony in district court may be appropriate.
    Appellee’s Brief at 9 (noting an applicant can introduce
    new evidence that “the applicant could not reasonably
    3   Another exception enumerated in Overton
    Park is not applicable here. De novo review is also au-
    thorized “when issues that were not before the agency are
    raised in a proceeding to enforce nonadjudicatory agency
    action.” 
    401 U.S. at 415
    . This exception does not apply to
    section 145 cases because new issues cannot be raised in a
    section 145 action. See Newman v. Quigg, 
    877 F.2d 1575
    ,
    1579 (Fed. Cir. 1989) (citing DeSeversky v. Brenner, 
    424 F.2d 857
    , 858 (D.C. Cir. 1970)).
    9                                            HYATT   v. KAPPOS
    have provided to the agency in the first instance”). For
    example, in a narrow class of cases under section 145, the
    outcome will hinge on credibility determinations, such as
    where there is a question about the date of reduction to
    practice. In such circumstances, PTO procedures may be
    inadequate and it makes sense to permit the district court
    to take live testimony under Overton Park to resolve
    credibility issues. Where credibility issues are not pre-
    sented, however, there is nothing inadequate about the
    PTO factfinding process, and under general administra-
    tive law principles, the district court should be confined to
    the record presented to the PTO where the applicant
    could have presented the evidence in the first instance. 4
    The necessity of presenting evidence to the adminis-
    trative agency in the first instance when the agency can
    receive the evidence is supported as well by principles of
    4    While the PTO states that “[w]e do not contend
    that an applicant’s ability to introduce new evidence is
    limited to situations in which ‘agency factfinding proce-
    dures are inadequate,’” Appellee’s Brief at 19 n.4, there is
    little difference between the standard for the receipt of
    new evidence urged by the PTO and the standard I think
    is appropriate. The PTO agrees that new evidence that
    could not be submitted to the PTO may be introduced in
    district court. Id. at 29. In exceptional circumstances,
    the PTO apparently would allow other evidence in district
    court where there was a reasonable excuse for not submit-
    ting it to the PTO in the first instance and the evidence
    would be conclusive. See id. Those circumstances seem
    to be limited to situations where the evidence “in charac-
    ter and amount carries thorough conviction that the
    agency’s decision was mistaken.” Id. (internal quotation
    omitted). That describes situations where the failure to
    submit the evidence to the PTO would be harmless error.
    Where new evidence is discovered after the PTO proceed-
    ing and is presented to the district court, the district court
    in most instances should remand to the agency for its
    initial consideration.
    HYATT   v. KAPPOS                                         10
    administrative exhaustion, which require that evidence
    and arguments both be presented in the first instance to
    the agency. The ordinary rule is that “no one is entitled
    to judicial relief for a supposed or threatened injury until
    the prescribed administrative remedy has been ex-
    hausted.” McKart v. United States, 
    395 U.S. 185
    , 194
    (1969) (internal quotation omitted); see Woodford v. Ngo,
    
    548 U.S. 81
    , 90 (2006). “Exhaustion concerns apply with
    particular force when the action under review involves
    exercise of the agency’s discretionary power or when the
    agency proceedings in question allow the agency to apply
    its special expertise.” McCarthy v. Madigan, 
    503 U.S. 140
    ,
    145 (1992) (citing McKart, 
    395 U.S. at 194
    ) (emphasis
    added). The majority ignores these important principles
    of administrative law, adopting a rule that effectively
    allows a patentee to decline to present his evidence sup-
    porting patent issuance to the PTO in the first instance.
    III
    The majority’s approach also finds no support in the
    language of the statute. Section 145 provides:
    An applicant dissatisfied with the decision of the
    Board of Patent Appeals and Interferences in an
    appeal under section 134(a) of this title may,
    unless appeal has been taken to the United States
    Court of Appeals for the Federal Circuit, have
    remedy by civil action against the Director in the
    United States District Court for the District of Co-
    lumbia if commenced within such time after such
    decision, not less than sixty days, as the Director
    appoints. The court may adjudge that such appli-
    cant is entitled to receive a patent for his inven-
    tion, as specified in any of his claims involved in
    the decision of the Board of Patent Appeals and
    Interferences, as the facts in the case may appear
    11                                         HYATT   v. KAPPOS
    and such adjudication shall authorize the Director
    to issue such patent on compliance with the re-
    quirements of law. All the expenses of the pro-
    ceedings shall be paid by the applicant.
    
    35 U.S.C. § 145
     (emphasis added). 5
    Contrary to the majority, the language of section 145
    providing for district court review does not in any way
    suggest that the proceedings should be de novo rather
    than generally on the agency record. Even before the
    1946 enactment of the APA, see Act of June 11, 1946, ch.
    324, 
    60 Stat. 237
    , the Supreme Court had held that
    5   The comparable provision for interference pro-
    ceedings, section 146, provides:
    Any party to an interference dissatisfied with the
    decision of the Board of Patent Appeals and Inter-
    ferences on the interference, may have remedy by
    civil action, if commenced within such time after
    such decision, not less than sixty days, as the Di-
    rector appoints or as provided in section 141 of
    this title, unless he has appealed to the United
    States Court of Appeals for the Federal Circuit,
    and such appeal is pending or has been decided.
    In such suits the record in the Patent and Trade-
    mark Office shall be admitted on motion of either
    party upon the terms and conditions as to costs,
    expenses, and the further cross-examination of the
    witnesses as the court imposes, without prejudice
    to the right of the parties to take further testi-
    mony. The testimony and exhibits of the record in
    the Patent and Trademark Office when admitted
    shall have the same effect as if originally taken
    and produced in the suit.
    
    35 U.S.C. § 146
     (emphasis added).
    HYATT   v. KAPPOS                                            12
    provisions for district court or trial court review of agency
    action would not be read to imply the power to go outside
    the agency record. For example, in Tagg Bros. & Moor-
    head v. United States, 
    280 U.S. 420
     (1930), the Court held
    that although the Packers and Stockyards Act of 1921, 
    7 U.S.C. §§ 181
    –229, provided for suits to be brought in
    federal district court to enjoin the enforcement of agency
    orders, this did not imply a trial de novo. 
    280 U.S. at
    444–45. The Court explained:
    A proceeding under section 316 of the Packers and
    Stockyards Act is a judicial review, not a trial de
    novo. The validity of an order of the Secretary, like
    that of an order of the Interstate Commerce Com-
    mission, must be determined upon the record of the
    proceedings before him . . . . On all other issues his
    findings must be accepted by the court as conclu-
    sive, if the evidence before him was legally suffi-
    cient to sustain them and there was no
    irregularity in the proceeding. To allow his find-
    ings to be attacked or supported in court by new
    evidence would substitute the court for the admin-
    istrative tribunal as the rate-making body. Where
    it is believed that the Secretary erred in his find-
    ings because important evidence was not brought
    to his attention, the appropriate remedy is to ap-
    ply for a rehearing before him or to institute new
    proceedings.
    
    Id.
     at 443–45 (emphases added; footnote omitted; cita-
    tions omitted).
    The Court disposed of similar arguments in the con-
    text of district court actions authorized by the judicial
    review provision of the Communications Act of 1934, 
    47 U.S.C. § 402
    (a). See Nat'l Broad. Co. v. United States,
    13                                           HYATT   v. KAPPOS
    
    319 U.S. 190
    , 227 (1943). The statute initially provided
    for “suits in equity” to “enjoin, set aside, annul, or sus-
    pend any order or requirement of the Commission . . . .” 6
    Communications Act of 1934, ch. 652, Title IV, § 402(a),
    
    48 Stat. 1064
    , 1093. The Court held that such suits were
    not de novo, and the review was limited to the agency
    record: “The court below correctly held that its inquiry
    was limited to review of the evidence before the Commis-
    sion. Trial de novo of the matters heard by the Commis-
    sion and dealt with in its Report would have been
    improper.” 
    Id. at 227
     (emphasis added).
    After enactment of the APA in 1946, the Supreme
    Court and other courts of appeals have repeatedly held
    that broad, general language such as “bill in equity” or
    “civil action” providing for trial court review does not
    create trial de novo, and that much more specific lan-
    guage is required. For example, in United States v. Carlo
    Bianchi & Co., 
    373 U.S. 709
     (1963), the Court held that
    “suit[s]” brought in the Court of Claims under the
    Wunderlich Act, Pub. L. No. 83-356, 
    68 Stat. 81
     (1954), 7
    6  This statute was later amended to transfer juris-
    diction to three-judge panels of the district courts under
    the Urgent Deficiencies Act of 1913, 
    38 Stat. 208
    , 219. A
    proceeding to set aside an order of the Commission under
    that act was also considered “a plenary suit in equity.”
    Columbia Broad. Sys., Inc. v. United States, 
    316 U.S. 407
    ,
    415 (1942).
    7   The statute provides:
    No provision of any contract entered into by the
    United States, relating to the finality or conclu-
    siveness of any decision of the head of any de-
    partment or agency or his duly authorized
    representative or board in a dispute involving a
    question arising under such contract, shall be
    pleaded in any suit now filed or to be filed as lim-
    iting judicial review of any such decision to cases
    HYATT   v. KAPPOS                                          14
    were not trials de novo. 
    373 U.S. at
    713–15 (1963). The
    Court noted that “the standards of review adopted in the
    Wunderlich Act—‘arbitrary,’ ‘capricious,’ and ‘not sup-
    ported by substantial evidence’—have frequently been
    used by Congress and have consistently been associated
    with a review limited to the administrative record.” 
    Id. at 715
    . The Court gave the following general rule:
    [T]he reviewing function is one ordinarily limited
    to consideration of the decision of the agency or
    court below and of the evidence on which it was
    based. Indeed, in cases where Congress has simply
    provided for review, without setting forth the stan-
    dards to be used or the procedures to be followed,
    this Court has held that consideration is to be con-
    fined to the administrative record and that no de
    novo proceeding may be held.
    
    Id. at 715
     (emphases added). Similarly, in Anderson v.
    District of Columbia, 
    877 F.2d 1018
     (D.C. Cir. 1989), the
    District of Columbia Circuit held that under the Individu-
    als with Disabilities Education Act, which explicitly
    provides for a “civil action” in which the district court can
    hear “additional evidence at the request of a party,” 
    20 U.S.C. § 1415
    (i)(2), “[t]he authority of the district court to
    receive new evidence does not transform the review
    proceedings into a trial de novo,” 877 F.2d at 1025.
    where fraud by such official or his said represen-
    tative or board is alleged: Provided, however,
    [t]hat any such decision shall be final and conclu-
    sive unless the same is fraudulent or capricious
    or arbitrary or so grossly erroneous as necessar-
    ily to imply bad faith, or is not supported by sub-
    stantial evidence.
    
    41 U.S.C. § 321
     (emphasis in original).
    15                                          HYATT   v. KAPPOS
    There is only one feature that distinguishes actions
    under section 145 from agency review in other contexts.
    Congress has provided for a dual avenue of review—
    review in this court under section 141 based on the
    agency record and review under section 145. This sug-
    gests that the two types of review proceedings are differ-
    ent, and that evidence that could not be submitted to the
    PTO may be received in section 145 actions. But it does
    nothing to suggest that district court review may proceed
    on an entirely new record or hold de novo proceedings, or
    that Congress intended to do anything more than permit
    evidence to be presented in district court that could not be
    presented before the Patent Office.
    The APA contemplates that statutes providing for de
    novo proceedings will specifically use that language.
    Under 
    5 U.S.C. § 706
    (2)(F), a reviewing court may “set
    aside agency action, findings, and conclusions” if “unwar-
    ranted by the facts[,] to the extent that the facts are
    subject to trial de novo by the reviewing court.” Other
    federal statutes that have been held to provide for de novo
    review provide for such review explicitly. See, e.g., Food
    Stamp Act, 
    7 U.S.C. § 2023
    (a)(15) (“The suit in the United
    States district court or State court shall be a trial de novo
    by the court in which the court shall determine the valid-
    ity of the questioned administrative action in issue . . .
    .”). 8 This distinction has been repeatedly recognized. For
    example, in Ibrahim v. U.S., 
    834 F.2d 52
     (2d Cir. 1987),
    the court held that,
    8  See also 
    19 U.S.C. § 1592
    (e) (providing that, for
    review of customs penalties for negligence or fraud,
    “[n]otwithstanding any other provision of law, in any
    proceeding commenced by the United States in the Court
    of International Trade for the recovery of any monetary
    penalty claimed under this section . . . all issues, includ-
    ing the amount of the penalty, shall be tried de novo”).
    HYATT   v. KAPPOS                                        16
    [t]he Food Stamp Act's de novo review provision
    embodies a different and broader scope of review
    than that available under the APA . . . [Cases re-
    quiring review on the agency record are different
    because there,] no statute or regulation provided
    for de novo review. The APA therefore governed.
    Here, in contrast, the Food Stamp Act specifically
    provides that review of FNS determinations ‘shall
    be a trial de novo.’ 
    7 U.S.C. § 2023
    (a). 9
    
    Id.
     at 53–54.
    As these statutes demonstrate, when Congress in-
    tends review by de novo trial, Congress explicitly author-
    izes de novo trial. In the absence of specific statutory
    authorization, “de novo review is generally not to be
    presumed.” Consolo v. Fed. Mar. Comm’n, 
    383 U.S. 607
    ,
    619 n.17 (1966). Section 145 does not include language
    providing for “de novo” review or the equivalent.
    The majority is unable to point to any Supreme Court
    authority that has construed a statute not providing
    explicitly for de novo review or the equivalent as provid-
    ing for such review. To be sure, the majority claims that
    Chandler v. Roudebush, 
    425 U.S. 840
     (1976), recognizes
    de novo review based solely on the provision for a district
    court “civil action.” See Maj. op. at 31 (“Where the statute
    permits a ‘civil action’ in relation to agency actions, the
    9   See United States v. Ford Motor Co., 
    463 F.3d 1286
    , 1298 (Fed. Cir. 2006) (finding that even the explicit
    language of § 1592(e) should interpreted narrowly as
    providing for de novo review only of certain aspects of the
    customs determination, not to “permit an importer to end-
    run the protest provisions”).
    17                                            HYATT   v. KAPPOS
    Supreme Court has held that this amounts to a trial de
    novo.”). That is not accurate.
    The Chandler Court found that the plain language
    (and legislative history) of that particular statute did
    provide for de novo review. Chandler, 
    425 U.S. at
    844–46.
    The Civil Rights Act of 1964 provided for “civil action[s]”
    in district courts to redress discrimination against gov-
    ernment employees. 
    Id. at 844
    . Significantly, the statute
    also provided that “the provisions of section 706(f)
    through (k) as applicable shall govern civil actions
    brought hereunder.” 
    Id. at 844
     (quoting 42 U.S.C. §
    2000e–16(d) (1970 ed., Supp. IV)). Those sections, dealing
    with civil actions involving private employees, had re-
    peatedly been interpreted as providing for a trial de novo
    based on specific language in the private employee provi-
    sion. Id. at 844–45. The Court held that the incorpora-
    tion of the private employee standard for a de novo trial
    meant that there was to be a trial de novo in government
    employee cases by virtue of the plain language of the
    statute. Id. at 845–46. The Court reasoned that the
    “terminology employed by Congress” in providing for a
    “civil action” in section 706, relating to private sector
    employees, “indicates clearly that the ‘civil action’ to
    which private-sector employees are entitled . . . is to be a
    trial de novo.” Id. “Since federal-sector employees are
    entitled by § 717(c) to ‘file a civil action as provided in
    section 706 [for private-sector employees]’ . . . [and] the
    civil action provided in § 706 is a trial de novo, it would
    seem to follow syllogistically that federal employees are
    entitled to a trial de novo . . . .” Id. Thus, based on that
    plain language of the statute and its legislative history, it
    found the general presumption against de novo review
    inapplicable because “here . . . there is a ‘specific statutory
    authorization’ of a district court ‘civil action,’ which both
    the plain language of the statute and the legislative
    HYATT   v. KAPPOS                                         18
    history reveal to be a trial de novo.” Id. at 862. There is
    no support for reading “civil action” language, standing
    alone, as requiring a trial de novo. The Supreme Court’s
    decision in Chandler supports that well-established rule.
    IV
    Additionally, the legislative history of the predecessor
    of section 145, when enacted in 1927, provides no support
    for the majority’s interpretation of the statutory text. The
    majority relies wholly on hearing testimony. As the
    Supreme Court stated in Kelly v. Robinson, 
    479 U.S. 36
    (1986), the Court has declined “to accord any significance
    to . . . statements” made in hearings. 
    479 U.S. at
    51 n.13.
    Earlier, in McCaughn v. Hershey Chocolate Co., 
    283 U.S. 488
     (1931), the Court noted, “such individual expressions
    [as statements made in committee hearings] are with out
    weight in the interpretation of a statute.” 
    Id.
     at 493–94.
    The majority’s decision here flies in the teeth of this
    established principle.
    Even if the statements in Committee hearings could
    be considered relevant legislative history, the materials
    cited by the majority would be entitled to little weight.
    The 1927 legislation was based initially on a proposal
    drafted by the American Bar Association. To Amend
    Section 52 of the Judicial Code and Other Statutes Affect-
    ing Procedure in the Patent Office: Hearings on H.R. 6252
    and H.R. 7087 Before the H. Comm. On Patents, 69th
    Cong. 14 (February 1926) [hereinafter To Amend Section
    52]. The purpose of the proposal was to simplify the
    appeals procedure both within the Patent Office and in
    the courts. Id. at 3. Under section 4915 (section 145’s
    predecessor) as it then existed, an appeal could be taken
    from the Patent Office decision to the Supreme Court of
    the District of Columbia. Act of March 2, 1927, ch. 273, §
    11, 
    44 Stat. 1335
    , 1336–37. Thereafter a “bill in equity”
    19                                          HYATT   v. KAPPOS
    proceeding could be brought to set aside the Patent Office
    decision in district court. 
    Id.
     The bills initially proposed
    to eliminate the appeal to the Supreme Court of the
    District of Columbia and to rely entirely on the bill in
    equity as the form of judicial review. To Amend Section
    52, at 9.
    Hearings were initially held in February of 1926 in
    the 69th Congress, First Session, on two separate bills.
    
    Id.
     at 1–2; see To Amend the Statutes of the United States
    as to Procedure in the Patent Office: Hearings on H.R.
    7563 and H.R. 13487, 69th Cong. 5 (Dec. 1926) (explain-
    ing the prior hearings) [hereinafter Procedure in the
    Patent Office]. The quotes from the majority are taken
    entirely from the February 1926 hearings on bills that
    were not enacted into law insofar as they concerned
    revisions to section 4915. 10 The Commissioner of Patents
    objected to various provisions of the bill, and new bills
    were drafted reflecting substantial changes, including the
    creation of two alternative avenues for review—an appeal
    to the Court of Appeals for the District of Columbia based
    on the Patent Office record and the “bill in equity” proce-
    dure that would receive the full Patent Office record but
    allow supplementation. 11 Those February 1926 hearings
    10 The only bill that was enacted (H.R. 6252) con-
    cerned amendments to the jurisdictional rules in Section
    52 of the judicial code and allowed parties in a 4915
    action, if they resided in different districts, all to bring
    suit in the Supreme Court of the District of Columbia.
    Act of March 3, 1927 ch. 364, 
    44 Stat. 1394
    .
    11  A.C. Paul, Chairman of the Legislation Committee
    of the Patent Section of the American Bar Association
    explained, “We had a hearing before the committee on
    February 4, 1926. At that time some provisions of the bill
    were objected to by the commissioner, and after a hearing,
    as chairman of the legislation committee of the patent
    section of the American Bar Association, I undertook to
    see if we could get together and reconcile the views of the
    HYATT   v. KAPPOS                                       20
    were unlikely to be considered by members of Congress
    voting on a new and quite different bill in the subsequent
    session.
    New hearings were held in December 1926 on the bill
    that ultimately became law (S. 4812 and H.R. 13487). In
    those hearings, both proponents of section 4915 (from the
    bar) and opponents (from the Patent Office) described the
    motivation for the new legislation in identical terms.
    While the bill in equity was characterized by some as a
    “de novo” proceeding or as “starting all over,” 12 those
    statements did not suggest that the Patent Office could be
    bypassed in the presentation of evidence. Indeed, the
    proponents viewed section 145 proceedings as involving
    review of PTO decisions. A.C. Paul, the Chairman of the
    legislation committee of the patent section of the Ameri-
    can Bar Association viewed it as “practically another
    appeal.” See, e.g., Procedure in the Patent Office, at 8.
    Three features are significant. First, the statute, unlike
    the existing provision, allowed the Patent Office record to
    be received in section 4915 interference proceedings, and
    the hearings noted the benefits of using the Patent Office
    record in the bill of equity proceeding. For instance, Otto
    Barnett explained that the bill “for the first time . . .
    provided that in [the bill of equity proceeding] you may
    use the testimony taken in the Patent Office” and that the
    new law was preferable because “under the present law it
    commissioner and the members of the committee, and we
    had negotiations extending over a number of months.”
    Procedure in the Patent Office, at 5.
    12  Procedure in the Patent Office, at 11 (statement of
    Hon. Thomas E. Robertson, Comm’r of Patents); Amend-
    ing the Statutes of the United States as to Procedure in
    the Patent Office: Hearings on S. 4812, 69th Cong. 10
    (December 1926) (statement of Thomas E. Robertson,
    Comm’r of Patents) [hereinafter Senate Hearings].
    21                                           HYATT   v. KAPPOS
    is all lost, and you have to start a new record.” Senate
    Hearings, at 13 (Statement of Otto R. Barnett).
    Second, even more significantly, the purpose of the
    bill was described as permitting the presentation of live
    testimony in the bill in equity proceeding because it could
    not be submitted before the Patent Office. 13 For example,
    Edward S. Rogers explained,
    There was a faction . . . who were in favor of doing
    away with section 4915 [the predecessor of section
    145] . . . . It was thought inadvisable to do so, be-
    cause the court, in hearing cases, will see the wit-
    nesses.      The testimony in the Patent Office
    hearings is all taken by deposition, and you cannot
    take the bearing of a man in a deposition, and fre-
    quently there are clashes in the testimony and
    lapses of memory, if not actual perjury. So it
    seems quite necessary to have the men who are to
    testify put on the stand in court.
    Senate Hearings, at 15 (statement of Edward S. Rogers)
    (emphasis added). Similarly, Commissioner of Patents
    Robertson noted,
    My own preference would be to repeal entirely
    section 4915 . . . but the bar unquestionably wants
    that section 4915 to continue, because it does
    13 The prevailing situation had been described in the
    earlier hearing as follows: “[E]ach applicant [in interfer-
    ence proceedings] is allowed to put in as much testimony
    as he wishes, but they do not have the same cross-
    examination privileges that they have in open court . . . .
    In ex parte cases, there is no testimony except affidavits.”
    To Amend Section 52, at 37 (statements of Alexander J.
    Wedderburn, Patent Att’y & Karl Fenning, former Assis-
    tant Comm’r of Patents).
    HYATT   v. KAPPOS                                       22
    permit bringing the witnesses in open court which
    we can not have under the present procedure in the
    Patent Office and so we have all agreed . . . .
    Procedure in the Patent Office, at 11 (statement of Thomas
    E. Robertson, Comm’r of Patents) (emphasis added). 14
    The purpose of the new legislation would be entirely
    served by allowing in the trial court only evidence that
    could not have been submitted to the Patent Office, such
    as live testimony.
    Third, there was no suggestion in the December 1926
    hearings, as there was in the February 1926 hearing, that
    applicants in the bill in equity could “bring[] in evidence
    that they could have brought in before [the Patent Office]
    but did not.” To Amend Section 52, at 81 (statement of
    Thomas E. Robertson, Comm’r of Patents). That latter
    statement was made by the Commissioner of Patents only
    in February 1926 in his opposition to the bill. The omis-
    sion of such statements in later hearings could well be
    explained by the Commissioner’s receiving assurances in
    negotiations over the bill that it did not go that far. In
    any event, the earlier statement cannot be afforded any
    weight. As the Supreme Court noted in Bryan v. United
    States, 
    524 U.S. 184
     (1998), "the fears and doubts of the
    opposition are no authoritative guide to the construction
    of legislation. In their zeal to defeat a bill, they under-
    14   Commissioner Robertson also stated that “[t]he
    judges who decide these cases have never seen the wit-
    nesses [but if you] want a trial de novo under section 4915
    you can force your opponent to come under section 4915 so
    that the witnesses can be seen in court and have the
    testimony decided by the judges who actually see the
    witnesses as they testify.” Procedure in the Patent Office,
    at 14 (statement of Thomas E. Robertson, Comm’r of
    Patents) (emphasis added).
    23                                          HYATT   v. KAPPOS
    standably tend to overstate its reach." 
    524 U.S. at 196
    (citations, brackets, and quotation marks omitted).
    Far more pertinent than the committee hearings in
    connection with the 1927 Act is the history of the 1952
    codification. As I discuss below, at the time of the 1952
    codification the courts had uniformly rejected a de novo
    standard in interpreting section 4915. It is fair to assume
    that Congress approved that interpretation in codifying
    the section. Congress explicitly stated that codification of
    section 145 made “no fundamental change in the various
    appeals and other review of Patent Office action . . . .” S.
    Rep. No. 82-1979 (1952), reprinted in 1952 U.S.C.C.A.N.
    2394, 2400. The Supreme Court has recognized that the
    “evaluation of congressional action . . . must take into
    account its contemporary legal context,” Cannon v. Univ.
    of Chi., 
    441 U.S. 677
    , 698–99 (1979), and that “Congress
    is presumed to be aware of an administrative or judicial
    interpretation of a statute and to adopt that interpreta-
    tion when it re-enacts a statute without change,” Loril-
    lard v. Pons, 
    434 U.S. 575
    , 580 (1978).
    V
    The earlier Supreme Court cases relied on by the ma-
    jority do not suggest a different construction. None of the
    cases cited by the majority held that any and all evidence
    could be admitted without regard to whether it was
    submitted to the Patent Office. Hoover Co. v. Coe, 
    325 U.S. 79
     (1945), merely states that section 145 allows for
    an action “on proof which may include evidence not pre-
    sented in the Patent Office.” 
    325 U.S. at 83
     (emphasis
    added). Similarly, Gandy v. Marble, 
    122 U.S. 432
     (1887),
    merely noted that section 4915 was “not a technical
    appeal from the patent-office, nor confined to the case as
    made in the record of that office” and did not explicitly
    HYATT   v. KAPPOS                                           24
    state there were no limits on the evidence introduced.
    
    122 U.S. at 439
    .
    The majority, however, places emphasis on language
    in Butterworth v. Hoe, 
    112 U.S. 50
     (1884), stating that in
    an action under section 4915 of the Revised Statutes
    (section 145’s predecessor):
    Further provision, covering such and also all
    other cases in which an application for a patent
    has been refused, either by the commissioner of
    patents or by the supreme court of the district, is
    found in Revised Statutes, § 4915. It is thereby
    provided that the applicant may have remedy by
    bill in equity. This means a proceeding in a court
    of the United States having original equity juris-
    diction under the patent laws, according to the
    ordinary course of equity practice and procedure.
    It is not a technical appeal from the patent-office,
    like that authorized in section 4911, confined to
    the case as made in the record of that office, but is
    prepared and heard upon all competent evidence
    adduced, and upon the whole merits. Such has
    been the uniform and correct practice in the cir-
    cuit courts. Whipple v. Miner, 15 Fed. Rep. 117;
    Ex parte Squire, 
    3 Ban. & A. 133
    ; Butler v. Shaw,
    21 Fed. Rep. 321.
    Butterworth, 
    112 U.S. at 61
     (emphasis added).
    In fact, Butterworth is no help to the majority for sev-
    eral reasons. First, Butterworth and the cases that it
    cited were all interference cases. Pre-1927 decisions of
    the Supreme Court and other courts in interference
    proceedings concerning the ability and necessity of creat-
    25                                          HYATT   v. KAPPOS
    ing a new record in bill in equity proceedings are of no
    value in interpreting the 1927 legislation. That legisla-
    tion worked a major change on interference proceedings.
    The 1927 law explicitly provided that, for the first time,
    the PTO record would be received in the bill in equity
    interference proceedings and that “when admitted shall
    have the same force and effect as if originally taken and
    produced in the suit.” Act of March 2, 1927, ch. 273, § 11,
    
    44 Stat. 1335
    , 1337 (1927). Previously in the bill in equity
    proceedings, the Patent Office record, because of the
    informal procedures followed in the Patent Office, was
    viewed as having secondary value, and it was necessary to
    create a new duplicate record in the trial court. 15 This
    was recognized both in the hearings on the 1927 legisla-
    tion (as noted above) and in subsequent court cases. As
    the Third Circuit explained,
    [T]he evidence given in the interference proceed-
    ings could be introduced only as secondary evi-
    dence, after proper foundation laid. The
    competency of such evidence had to be determined
    according to the principles of equity jurispru-
    dence. In other words, the witnesses who had tes-
    tified in the interference proceedings had to
    testify anew in the suit in the district court. If
    they did not so testify their absence had to be ac-
    counted for in the usual way if the testimony
    taken in the interference was to be received as
    secondary evidence. The [1927] amendment was
    passed to avoid this arduous and expensive means
    of reproducing the evidence of the interference
    proceedings in the suit.
    15To be sure, in some cases the case did proceed
    based on the PTO record. See, e.g., Morgan v. Daniels,
    
    153 U.S. 120
    , 124 (1894).
    HYATT    v. KAPPOS                                         26
    Gen. Talking Pictures Corp. v. Am. Tri-Ergon Corp., 
    96 F.2d 800
    , 812 (3d Cir. 1938) (citations omitted). Under
    these circumstances, pre-1927 court cases naturally
    referred to the creation of a new record in the bill in
    equity proceedings. Under the 1927 legislation the crea-
    tion of a new record in interferences became unnecessary.
    The legislation provided that the Patent Office record
    would be received and left it to the trial court to deter-
    mine what additional cross examination and new testi-
    mony could appropriately be received. 16
    Second, Butterworth did not address the question
    whether evidence was required to be submitted to the
    Patent Office in the first instance if it was later to be used
    in bill in equity proceedings. The sole issue decided in
    16   Although sections 145 and 146 stem from the
    same root, namely, R.S. § 4915, they are distinct because
    they have different content and contain different proce-
    dures for admitting evidence. In section 145 ex parte
    proceedings, the Patent Office is a direct party to the
    action whereas in section 146 interferences, the two
    private parties to the interference are the parties in
    interest. Section 146 explicitly addresses the optional
    procedure for admitting the entire administrative record,
    and such language is absent from section 145 because the
    administrative record is automatically admitted in judi-
    cial review proceedings. Thus, it is inaccurate to conflate
    sections 145 and 146 with regard to admissibility. Section
    145 could be construed as a “mongrel” cause of action in
    the same sense that claim construction is “a mongrel
    practice,” as Justice Souter noted in Markman v. West-
    view Instruments, Inc., 
    517 U.S. 370
    , 378 (1996). Once
    again, as in Zurko, the majority is attempting to develop a
    distinction between patent administrative law and the
    traditional administrative agency procedure. In doing so,
    it fails to focus on the core of the matter, namely the
    discretion of a district court regarding the admissibility of
    evidence in a section 145 case.
    27                                          HYATT   v. KAPPOS
    Butterworth was whether the Secretary of the Interior
    could override the Patent Office decision approved by the
    court in a proceeding under section 4915. 
    112 U.S. at 54, 62
    , 68–69. The language of Butterworth is at best am-
    biguous. Like the other Supreme Court cases, it recog-
    nizes that new evidence may be received and considered
    in the trial court proceedings, 
    id. at 61
    , but it says noth-
    ing about whether that evidence had to be submitted to
    the Patent Office in the first instance if such a submission
    were possible.
    The three cases cited in Butterworth are no more il-
    luminating. Whipple simply held that the trial court
    proceeding was an “original proceeding” and that the trial
    court could generally not enjoin issuance of a patent
    pending its outcome. 15 F. at 117–18. Butler held that
    for interference cases the 4915 proceeding could be in-
    voked without first appealing to the Supreme Court of the
    District of Columbia, and noted that “the court may
    receive new evidence and has the same powers as in other
    cases in equity.” 21 F. at 326–27. Again, what new
    evidence could be heard remained unclear. In the third
    case the court rejected the contention that the court was
    confined entirely to the record before the Patent Office,
    holding that in addition to the Patent Office records “new
    and additional testimony” could be received in the equity
    proceedings. In re Squire, 22 F. Cas. at 1016. But again,
    the court was considering only a proposed blanket bar on
    new evidence; it did not consider whether the substance of
    testimony could be withheld from the Patent Office in the
    agency proceeding if the Patent Office could receive and
    consider it. 17
    17The language quoted by the majority is not in fact
    from Squire itself but from the earlier case of Atkinson v.
    Boardman quoted in Squire as part of the background
    HYATT   v. KAPPOS                                            28
    Third, Butterworth’s reference to “the ordinary course
    of equity practice and procedure” and “competent evi-
    dence” suggests meaningful limits on the admissibility of
    new evidence in section 4915 proceedings. See 
    112 U.S. at 61
    . As the Supreme Court explained in Morgan v.
    Daniels, a bill in equity 18 in the context of section 4915
    was
    an application to the court to set aside the action of
    one of the executive departments of the govern-
    ment. The one charged with the administration of
    the patent system had finished its investigations
    and made its determination with respect to the
    question of priority of invention. That determina-
    tion gave to the defendant the exclusive rights of a
    patentee. A new proceeding is instituted in the
    courts—a proceeding to set aside the conclusions
    reached by the administrative department, and to
    give to the plaintiff the rights there awarded to
    the defendant. It is something in the nature of a
    description. See Atkinson v. Boardman, 
    2 F. Cas. 97
    (C.C.N.Y. 1851).
    18   A “bill in equity,” also termed a “bill of complaint,”
    was the initial pleading that invoked the jurisdiction of
    the courts of equity. See Federal Equity Rule 25 (1913).
    Equity courts recognized various species of bills, depend-
    ing on the nature of the relief sought. The “bill of review”
    was a type of bill in equity seeking a reversal or modifica-
    tion of a prior decree or judgment. See, e.g., Kingsbury v.
    Buckner, 
    134 U.S. 650
    , 671–72 (1890); Thompson v.
    Maxwell, 
    95 U.S. 391
    , 395–96 (1877) (“It is manifest that
    the object of this bill, especially after being amended, was
    to set aside the decree made in the original cause, and to
    substitute therefor a new decree supposed to be more
    advantageous to the complainants, upon the same mat-
    ters which were before the court and under its considera-
    tion in the said cause. Under the guise of a bill for
    quieting title it was in reality a bill of review.”).
    29                                            HYATT   v. KAPPOS
    suit to set aside a judgment, and, as such, is not to
    be sustained by a mere preponderance of evidence.
    
    153 U.S. 120
    , 124 (1894) (emphases added); see also
    Fregeau v. Mossinghoff, 
    776 F.2d 1034
    , 1037 (Fed. Cir.
    1985) (applying Morgan to section 145 and noting that
    “an action under § 145 is . . . in essence a suit to set aside
    the final decision of the board, like the bill in equity from
    which it was derived”). Under settled principles of federal
    equity practice, a court presented with a bill to set aside a
    prior judgment would not rehear arguments or evidence
    that had been adjudicated in the prior proceeding, nor
    would it consider evidence that could have been produced
    during that proceeding in the exercise of reasonable
    diligence. Rather, the court would limit its review to (1)
    legal errors apparent on the face of the decree and (2) new
    evidence of such compelling character as to call into doubt
    the outcome of the prior proceeding. See, e.g., Beard v.
    Burts, 
    95 U.S. 434
    , 436 (1877); Scotten v. Littlefield, 
    235 U.S. 407
    , 411 (1914).
    In Beard, the Court explained:
    To sustain a bill of review, there must be errors of
    law apparent on the face of the decree, or some
    new matters of fact material in themselves, and
    discovered after the rendition of the decree. This is
    the general rule in equity . . . . The facts are not
    open for a re-trial, unless the bill asserts that new
    evidence has been discovered, not obtainable be-
    fore the first trial by the exercise of reasonable
    diligence.
    HYATT   v. KAPPOS                                        30
    Beard, 
    95 U.S. at 436
     (emphasis added). 19 Thus, federal
    courts in equity rejected attempts to litigate, through a
    bill of review, factual questions that could have been
    raised in the prior proceeding. See 
    id. at 436
    ; Purcell, 71
    U.S. (4 Wall.) at 521 (rejecting petitioner’s bill in equity
    because the complainant “offers no new evidence, but
    what he might as well have produced before”). These
    basic principles of equity practice would have been famil-
    iar to Congress in 1836, when it first authorized a “rem-
    edy by bill in equity” for applicants aggrieved by the final
    determination of the Commissioner of Patents. See Act of
    July 4, 1836, ch. 357, § 17, 
    5 Stat. 117
    , 124. Thus, the
    ordinary rules of equity practice tolerated nothing like the
    de novo relitigation that the majority adopts.
    Finally, and most significantly, none of the cases sub-
    sequent to Butterworth has interpreted it, or the cases
    that it cited, to require de novo review under the 1927
    legislation. The Supreme Court has never directly ad-
    dressed the de novo review issue. The only Supreme
    Court case to address the scope of section 145 after pas-
    sage of the 1927 Act, Dickinson v. Zurko, 
    527 U.S. 150
    (1990), does not address the issue of the scope of section
    145 with regard to new evidence. Zurko involved the
    19   See also Scotten, 
    235 U.S. at 411
     (explaining that
    a bill of review encompassed only manifest legal errors
    and “new facts discovered since the decree, which should
    materially affect the decree and probably induce a differ-
    ent result”); Purcell v. Miner, 71 U.S. (4 Wall.) 519, 521
    (1866) (“By Lord Chancellor Bacon's rules, it was de-
    clared: ‘No bill of review shall be admitted except it con-
    tain either error in law appearing in the body of the
    decree without further examination of matters in fact, or
    some new matter which hath arisen in time after the
    decree; and not on any new proof which might have been
    used when the decree was made.”); Whiting v. Bank of
    United States, 38 U.S. (13. Pet.) 6, 13–14 (1839).
    31                                          HYATT   v. KAPPOS
    question of what was the proper standard of review on
    direct appeal to the Federal Circuit under 
    35 U.S.C. § 141
    . 
    Id.
     at 152–53. Although the Supreme Court noted
    that a section 145 claimant can "present to the court
    evidence that the applicant did not present to the PTO,"
    the Court said nothing about when or under what circum-
    stances such evidence could be introduced. See 
    id. at 164
    .
    The decision in Zurko in fact undermines the majority’s
    holding both by recognizing the importance of applying
    traditional administrative law principles to the PTO and
    in recognizing that the “PTO is an expert body” that “can
    better deal with the technically complex subject matter” of
    patent applications than the federal courts. 
    Id. at 160
    .
    As will be seen in the next section, Butterworth has never
    been seen by other courts of appeals as barring limita-
    tions on new evidence that could have been presented to
    the Patent Office under the 1927 Act.
    VI.
    The majority opinion is, in fact, contrary to decades of
    circuit authority under the 1927 legislation, after Butter-
    worth, recognizing limits on the admissibility of new
    evidence in section 145 and section 146 proceedings. One
    of the more influential cases on the admissibility of evi-
    dence is Barrett Co. v. Koppers Co., 
    22 F.2d 395
     (3d Cir.
    1927), decided several months after the passage of the
    1927 legislation. There, during interference proceedings
    in the Patent Office, the Barrett Company instructed its
    employees not to answer questions about certain of its
    "commercial practices." 
    Id. at 396
    . The Barrett Company
    lost the interference, and then filed a bill in equity under
    Revised Statutes § 4915 and sought to introduce before
    the district court the exact testimony it had instructed its
    employees not to provide during the interference. Id. The
    Third Circuit found that the district court properly ex-
    cluded this evidence, saying:
    HYATT   v. KAPPOS                                           32
    The law gave the plaintiffs a day in court on the
    issue of priority. That was the day the interfer-
    ence was heard and if they chose not to avail
    themselves of their full rights but to gamble on
    the decision by giving only a part, and the weaker
    part, of the evidence they had in hand, they did it
    at their own risk. After losing on such evidence in
    what otherwise would be a train of futile appeals
    in the patent tribunals and Court of Appeals of
    the District of Columbia they cannot come into a
    District Court and say, now for the first time we
    shall tell the true story of reduction to practice
    and demand a patent.
    . . . When, as in this case, a party has refused to
    produce evidence for consideration by the Court of
    Appeals of the District of Columbia and then in
    the statutory action under section 4915, R.S., pro-
    duces that very evidence to overcome the effect of
    that court's decision, he comes very close to trifling
    with the courts’ processes. If in this case the Court
    of Appeals of the District of Columbia was wrong
    it was because the plaintiffs purposely kept it in
    the dark. If now this court were in effect to re-
    verse the decision of that court on evidence
    brought to light for the first time, we should be
    assisting the plaintiffs to profit by their own tech-
    nical wrong doing.
    . . . Particularly are we anxious that no one should
    think that we hold that any evidence not before
    the Court of Appeals of the District of Columbia is
    inadmissible in an action under section 4915, R.S.
    Such a notion would destroy the action given by
    section 4915, R.S. and throw overboard the whole
    doctrine of Morgan v. Daniels. Specifically our de-
    cision is that the plaintiffs in this action under
    33                                          HYATT   v. KAPPOS
    section 4915, R.S., are estopped to offer evidence
    which was wholly within their possession and con-
    trol at the interference proceeding and which they
    withheld from that proceeding and, therefore,
    withheld from the other patent tribunals and the
    Court of Appeals of the District of Columbia, and
    thereby made it impossible for those tribunals and
    that court to render what they, the plaintiffs, now
    maintain is the right decision.
    Id. at 397 (formatting altered; emphasis added).
    Subsequent to Barrett, three circuits—the District of
    Columbia, the Seventh, and the Eighth—have essentially
    followed the Barrett rule. The District of Columbia Cir-
    cuit in Cal. Research Corp. v. Ladd, 
    356 F.2d 813
     (D.C.
    Cir. 1966), adopted a negligence standard to limit the
    introduction of new evidence in a section 145 proceeding
    and explained that a section 145 action “may not be
    conducted in disregard of the general policy of encourag-
    ing full disclosure to administrative tribunals.” 
    Id. at 821
    . The Seventh Circuit adopted a “reasonably diligent”
    standard for determining whether evidence is admissible
    in a section 146 interference proceeding. In Velsicol
    Chem. Corp. v. Monsanto Co., 
    579 F.2d 1038
     (7th Cir.
    1978), it held “that absent special circumstances, the
    proper question for the district court was whether the
    failure of the proponent of the additional evidence to
    uncover its existence earlier or to procure it for the inter-
    ference proceeding occurred in spite of the proponent's
    diligence in preparing his case before the Board.” 
    Id. at 1046
    . The court cited the “policy of encouraging full
    disclosure” to the administrative tribunal as the reason
    for this limitation. Id.; see also Globe-Union v. Chi. Tel.
    Supply Co., 
    103 F.2d 722
    , 728 (7th Cir. 1939) (“We do not
    HYATT   v. KAPPOS                                         34
    dispute the soundness of the proposition that all pertinent
    evidence, actually available, should be submitted in the
    first instance. To permit partial presentation before the
    Patent Office is to sanction the destruction of administra-
    tive justice.” (emphasis added)).
    The Eighth Circuit adopted the rule that “deliberate,
    intentional, or willful withholding or suppression of
    pertinent and available evidence from the Patent Office,
    whether attended by reprehensible motives or not,
    whether it be for tactical or other reasons, justifies exclu-
    sion of such evidence in a section 146 proceeding.” Kir-
    schke v. Lamar, 
    426 F.2d 870
    , 874 (8th Cir. 1970). The
    court reasoned that a section 146 proceeding was not a
    “full trial de novo; rather, allowance of evidence in addi-
    tion to the Patent Office record must be tempered and
    circumscribed to some degree to effectuate the policy
    favoring full disclosure to administrative tribunals.” 
    Id.
    Although subsequent to Barrett the Third and Second
    Circuits limited the exclusion to testimony intentionally
    suppressed, their holdings too are inconsistent with the
    majority’s approach here. The Third Circuit continued to
    hold that intentionally suppressed evidence must be
    excluded. 20 The Second Circuit, which originally ap-
    20  See Minn. Mining & Mfg. Co. v. Carborun-
    dum, 
    155 F.2d 746
    , 748 (3d Cir. 1946) (distinguishing
    Barrett and allowing expert testimony that was not
    intentionally suppressed at the time of the Patent Office
    proceedings). Although another later Third Circuit case,
    Standard Oil Co. v. Montedison, S.P.A., 
    664 F.2d 356
    , 376
    (3d Cir. 1981), stated that “new expert testimony is
    clearly admissible in a section 146 proceeding without
    [showing special circumstances explaining why the testi-
    mony was not presented first to the Board] to the extent
    that it aids the court in understanding issues presented to
    the Board,” the court was apparently responding to an
    35                                          HYATT   v. KAPPOS
    proved of Barrett, see Greene v. Beidler, 
    58 F.2d 207
    , 208–
    09 (2d Cir. 1932), later suggested an exclusion might be
    limited to evidence “suppressed,” not “merely neglected
    through the plaintiff’s slackness in preparation,” Dowling
    v. Jones, 
    67 F.2d 537
    , 538 (2d Cir. 1933).
    Not a single court of appeals case has interpreted sec-
    tion 145 as permitting the submission of any and all new
    evidence. Although the cases suggest varying standards
    for the admission of new evidence, they all acknowledge
    the necessity of establishing significant limitations on the
    admission of new evidence, and recognize that to provide
    otherwise would undermine the requirement of adminis-
    trative exhaustion.      Today’s decision represents an
    anomalous and unjustified departure from prevailing
    circuit authority.
    VII
    The majority suggests that one should not be too con-
    cerned about its special rule for patent cases because
    general evidentiary principles will somehow allow the
    district court to discount evidence not submitted to the
    PTO and thus reach the same result at least in some
    cases. See Maj. op. at 30–31. This approach is remarka-
    bly similar to the argument rejected in Zurko where it
    was suggested that there was no meaningful difference
    between the APA substantial evidence standard and the
    clearly erroneous standard for review of PTO decisions.
    The Supreme Court concluded that while the differences
    were “subtle” and might not affect many cases, the differ-
    ences were nonetheless important. Zurko, 
    527 U.S. at
    161–65. Even if here the majority were right as to the
    consequences, this would not support application of the
    wrong law, as Zurko makes clear.
    attempt by the objecting party to place the burden of
    justifying the evidence on the party offering it.
    HYATT   v. KAPPOS                                        36
    But the majority is not right as to the consequences,
    and there is nothing subtle about the difference between
    excluding evidence and admitting it. The evidentiary
    cases cited by the majority offer no support for discount-
    ing evidence not submitted to the PTO on grounds that it
    would be too costly to do so, and the majority offers appli-
    cants a ready made excuse––the costs of making a full
    record before the PTO–– for the withholding of evidence
    under such circumstances. 21 The rules of evidence do not
    remotely offer a different path to the same result.
    In conclusion, I note the quite arresting policy argu-
    ment made by the majority for permitting applicants to
    bypass the PTO––that the applicant would bypass the
    PTO in favor of a de novo district court proceeding only in
    cases where the patent is commercially significant and
    the costs of a separate proceeding can be justified. See
    Maj. op. at 30–31. But those are exactly the cases in
    which PTO review is most important. In such cases,
    contrary to the majority, it is not somehow fantastic to
    imagine that applicants will elect to bypass the PTO in
    21   The majority suggests that two cases from the
    turn of the last century recognize that “courts have con-
    sidered an applicant’s failure to introduce evidence before
    the Patent Office in determining what weight to afford to
    the evidence.” Maj. op. at 30. The limited holdings of
    these cases impose no meaningful limits. The first simply
    recognizes that a witness’ new explanation, not offered in
    his Patent Office declaration, was not credible. W. Elec.
    Co. v. Fowler, 
    177 F. 224
    , 228–29 (7th Cir. 1910). The
    second recognizes that prior consistent declarations of a
    witness in the PTO proceeding, only introduced in district
    court after the witness had died, would be given little
    weight in evaluating the witness’ earlier testimony.
    Standard Cartridge Co. v. Peters Cartridge Co., 
    77 F. 630
    ,
    638 (6th Cir. 1896). These cases impose no limit on new
    evidence presented by new witnesses whose declarations
    were not supplied to the PTO.
    37                                        HYATT   v. KAPPOS
    favor of a second bite at the apple in the district court.
    They will do so exactly in those circumstances where an
    expert agency would reject the evidence but a non-expert
    district court might be convinced to accept it. A more
    pernicious approach is difficult to imagine.