In Re Lipitor Antitrust Litigation , 855 F.3d 126 ( 2017 )


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  •                                           PRECEDENTIAL
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    ______
    Nos. 14-4202, 14-4203, 14-4204, 14-4205, 14-4206, 14-4602
    & 14-4632
    ______
    IN RE: LIPITOR ANTITRUST LITIGATION
    Rite Aid Corporation; Rite Aid Hdqtrs. Corporation; JC (PJC)
    USA, LLC; Maxi Drug, Inc. d/b/a Brooks Pharmacy; Eckerd
    Corporation,
    Appellants in No. 14-4202
    Walgreen Company; The Kroger Co.; Safeway, Inc.;
    Supervalu, Inc.; HEB Grocery Company L.P.,
    Appellants in No. 14-4203
    Giant Eagle, Inc.,
    Appellant in No. 14-4204
    Meijer, Inc.; Meijer Distribution, Inc.,
    Appellants in No. 14-4205
    Rochester Drug Co-Operative, Inc.; Stephen L. LaFrance
    Pharmacy, Inc. d/b/a SAJ Distributors; Burlington Drug
    Company, Inc.; Value Drug Company; Professional Drug
    Company, Inc.; American Sales Company LLC,
    Appellants in No. 14-4206
    A.F.L.-A.G.C. Building Trades Welfare Plan; Mayor and City
    Council of Baltimore, Maryland; New Mexico United Food
    and Commercial Workers Union’s and Employers’ Health
    and Welfare Trust Fund; Louisiana Health Service Indemnity
    Company, d/b/a Blue Cross/Blue Shield of Louisiana; Bakers
    Local 433 Health Fund; Twin Cities Bakery Workers Health
    and Welfare Fund; Fraternal Order of Police, Fort Lauderdale
    Lodge 31, Insurance Trust Fund; International Brotherhood of
    Electrical Workers Local 98; New York Hotel Trades
    Counsel & Hotel Association of New York City, Inc., Health
    Benefits Fund; Edward Czarnecki; Emilie Heinle; Frank
    Palter; Andrew Livezey; Edward Ellenson; Jean Ellyne
    Dougan; Nancy Billington, on behalf of themselves and all
    others similarly situated,
    Appellants in No. 14-4602
    RP Healthcare, Inc.; Chimes Pharmacy, Inc.; James
    Clayworth, R.Ph., d/b/a Clayworth Pharmacy; Marin
    Apothecaries, Inc., d/b/a Ross Valley Pharmacy; Golden Gate
    Pharmacy Services, Inc., d/b/a Golden Gate Pharmacy;
    Pediatric Care Pharmacy, Inc.; Meyers Pharmacy, Inc.; Tony
    Mavrantonis R. Ph., d/b/a Jack’s Drugs; Tilley Apothecaries
    Inc., d/b/a Zweber’s Apothecary,
    Appellants in No. 14-4632
    2
    ______
    Nos. 15-1184, 15-1185, 15-1186, 15-1187, 15-1274, 15-1323
    & 15-1342
    ______
    IN RE: EFFEXOR XR ANTITRUST LITIGATION
    Walgreen, Co.; The Kroger, Co.; Safeway, Inc.; Supervalu,
    Inc.; HEB Grocery Company LP; American Sales Company,
    Inc.,
    Appellants in No. 15-1184
    Rite Aid Corporation; Rite Aid Hdqtrs., Corporation; JCG
    (PJC) USA, LLC; Maxi Drug, Inc. d/b/a Brooks Pharmacy;
    Eckerd Corporation; CVS Caremark Corporation,
    Appellants in No. 15-1185
    Giant Eagle, Inc.,
    Appellant in No. 15-1186
    Meijer, Inc.; Meijer Distribution, Inc.,
    Appellants in No. 15-1187
    Professional Drug Company, Inc.; Rochester Drug Co-
    Operative, Inc.; Stephen L. LaFrance Holdings, Inc.; Stephen
    L. LaFrance Pharmacy, Inc. d/b/a SAJ Distributors;
    Uniondale Chemist, Inc.,
    Appellants in No. 15-1274
    Painters District Council No. 30 Health & Welfare Fund;
    Medical Mutual of Ohio,
    Appellants in No. 15-1323
    3
    A.F.L.-A.G.C. Building Trades Welfare Plan; Daryl Deino;
    IBEW-NECA Local 505 Health & Welfare Plan; Louisiana
    Health Service Indemnity Company d/b/a Blue Cross/Blue
    Shield of Louisiana; Man-U Service Contract Trust Fund;
    MC-UA Local 119 Health & Welfare Plan; New Mexico
    United Food and Commercial Workers Union’s and
    Employers’ Health and Welfare Trust Fund; Plumbers and
    Pipefitters Local 572 Health and Welfare Fund; Sergeants
    Benevolent Association Health and Welfare Fund; Patricia
    Sutter (together “End-Payor Class Plaintiffs”) on behalf of
    themselves and all others similarly situated,
    Appellants in No. 15-1342
    ______
    On Appeal from the United States District Court
    for the District of New Jersey
    (MDL 2332) / (D.N.J. No. 3-12-cv-02389) / (D.N.J. No. 3-
    12-cv-02478) / (D.N.J. No. 3-12-cv-02519) / (D.N.J. No. 3-
    12-cv-04115) / (D.N.J. No. 3-12-cv-04537) / (D.N.J. No. 3-
    12-cv-05129) / (D.N.J. No. 3-12-cv-06774) / (D.N.J. No. 3-
    12-cv-07561)
    (D.N.J. No. 3-11-cv-05479) / (D.N.J. No. 3-11-cv-05590) /
    (D.N.J. No. 3-11-cv-05661) / (D.N.J. No. 3-11-cv-06985) /
    (D.N.J. No. 3-11-cv-07504) / (D.N.J. No. 3-12-cv-03116) /
    (D.N.J. No. 3-12-cv-03523)
    District Judge: Honorable Peter G. Sheridan
    ______
    4
    Argued: September 27, 2016
    Before: AMBRO, SMITH* and FISHER, Circuit Judges.
    (Filed: April 13, 2017)
    Monica L. Rebuck
    Hangley Aronchick Segal Pudlin & Schiller
    4400 Deer Path Road, Suite 200
    Harrisburg, PA 17110
    Maureen S. Lawrence
    Barry L. Refsin [ARGUED]
    Hangley Aronchick Segal Pudlin & Schiller
    One Logan Square
    18th & Cherry Streets, 27th Floor
    Philadelphia, PA 19103
    Counsel for Appellants Rite Aid Corp., Rite Aid Hdqtrs
    Corp., Maxi Drug Inc., Eckerd Corp. and JCG (PJC)
    USA LLC
    Anna T. Neill
    Scott E. Perwin [ARGUED]
    Lauren C. Ravkind
    Kenny Nachwalter, P.A.
    1441 Brickell Avenue
    *
    Honorable D. Brooks Smith, United States Circuit
    Judge for the Third Circuit, assumed Chief Judge status on
    October 1, 2016.
    
    Honorable D. Michael Fisher, United States Circuit
    Judge for the Third Circuit, assumed senior status on
    February 1, 2017.
    5
    Four Seasons Tower, Suite 1100
    Miami, FL 33131
    Counsel for Appellants Walgreen Co., Kroger Co.,
    Safeway Inc., Supervalu, Inc., HEB Grocery Co. LP
    and American Sales Co. LLC
    David P. Germaine
    Joseph M. Vanek
    Vanek, Vickers & Masini, P.C.
    55 West Monroe Street, Suite 3500
    Chicago, IL 60603
    Bradley J. Demuth
    Linda P. Nussbaum
    Nussbaum Law Group P.C.
    570 Lexington Avenue, 19th Floor
    New York, NY 10022
    Counsel for Appellants Meijer, Inc. and Meijer
    Distribution
    Moira Cain-Mannix
    Bernard D. Marcus
    Marcus & Shapira LLP
    One Oxford Centre
    35th Floor
    Pittsburgh, PA 15219
    Counsel for Appellant Giant Eagle, Inc.
    Gregory T. Arnold
    Kristen A. Johnson
    Kristie A. LaSalle
    Thomas M. Sobol
    Hagens Berman Sobol & Shapiro LLP
    6
    55 Cambridge Parkway, Suite 301
    Cambridge, MA 02142
    Caitlin Coslett
    Eric L. Cramer
    Jennifer MacNaughton, Esq.
    Daniel Simons, Esq.
    David F. Sorensen, Esq. [ARGUED]
    Berger & Montague, P.C.
    1622 Locust Street
    Philadelphia, PA 19103
    Elena K. Chan
    Bruce E. Gerstein
    Kimberly Hennings
    Garwin Gerstein & Fisher LLP
    88 Pine Street, 10th Floor
    New York, NY 10005
    Peter Kohn
    Richard D. Schwartz
    Faruqi & Faruqi LLP
    101 Greenwood Avenue, Suite 600
    Jenkintown, PA 19046
    Miles Greaves
    Barry S. Taus
    Taus Cebulash & Landau, LLP
    80 Maiden Lane, Suite 1204
    New York, NY 10038
    7
    Erin C. Burns
    Dianne M. Nast
    NastLaw LLC
    1101 Market Street, Suite 2801
    Philadelphia, PA 19107
    Don Barrett
    Barrett Law Group
    404 Court Square
    P.O. Box 927
    Lexington, MS 39095
    Counsel for Appellants Direct-Purchaser Class
    Plaintiffs Rochester Drug Co-Operative, Inc., et al.
    James E. Cecchi [ARGUED]
    Lindsey H. Taylor
    Carella, Byrne, Cecchi, Olstein, Brody, & Agnello, P.C.
    5 Becker Farm Road
    Roseland, NJ 07068
    Peter S. Pearlman
    Cohn Lifland Pearlman Herrmann & Knopf LLP
    Park 80 West - Plaza One
    250 Pehle Avenue, Suite 401
    Saddle Brook, NJ 07663
    Liaison Counsel for Appellants Direct-Purchaser
    Class Plaintiffs Rochester Drug Co-Operative, Inc., et
    al.
    Justin N. Boley
    Bethany R. Turke
    Kenneth A. Wexler
    Wexler Wallace LLP
    8
    55 W. Monroe Street, Suite 3300
    Chicago, IL 60603
    James W. Anderson
    Vincent J. Esades
    Renae Steiner
    David Woodward
    Heins Mills & Olson, P.L.C.
    310 Clifton Avenue
    Minneapolis, MN 55403
    J. Douglas Richards
    Sharon K. Robertson
    Cohen Milstein Sellers & Toll, PLLC
    88 Pine Street, 14th floor
    New York, NY 10005
    Michael M. Buchman
    Alex Straus, Esq.
    Motley Rice LLC
    600 Third Avenue, Suite 2101
    New York, NY 10016
    Jeffrey L. Kodroff
    John A. Macoretta
    Spector Roseman Kodroff & Willis
    181 Market Street
    Suite 2500
    Philadelphia, PA 19103
    Counsel for Appellants End-Payor Class Plaintiffs
    AFL-AGC Building Trades Welfare Plan, et al.
    9
    Lisa J. Rodriguez
    Schnader Harrison Segal & Lewis LLP
    Woodland Falls Corporate Park
    220 Lake Drive East, Suite 200
    Cherry Hill, NJ 08002-1165
    Liaison Counsel for Appellants End-Payor Class
    Plaintiffs AFL-AGC Building Trades Welfare Plan, et
    al.
    Joseph M. Alioto [ARGUED]
    Jamie L. Miller
    Theresa Driscoll Moore
    Alioto Law Firm
    One Sansome Street, 35th Floor
    San Francisco, CA 94104
    Timothy A.C. May
    Gil D. Messina
    Messina Law Firm, P.C.
    961 Holmdel Road
    Holmdel, NJ 07733
    James M. Dombroski
    Law Office of James M. Dombroski
    P.O. Box 751027
    Petaluma, CA 94975
    Counsel for Appellants RP Healthcare, Inc., et al.
    Lori A. Fanning
    Marvin A. Miller
    Matthew E. Van Tine
    Miller Law LLC
    115 South LaSalle Street, Suite 2910
    10
    Chicago, IL 60603
    Kevin P. Roddy
    Wilentz, Goldman & Spitzer, P.A.
    90 Woodbridge Center Drive, Suite 900
    Woodbridge, NJ 07095
    Mark S. Sandmann
    Hill Carter Franco Cole & Black, P.C.
    99102 Brinley Avenue, Suite 201
    Louisville, KY 40243
    Counsel for Appellants Painters District Council No.
    30 Health & Welfare Fund and Medical Mutual of
    Ohio
    Steve D. Shadowen
    Hilliard & Shadowen LLP
    919 Congress Avenue, Suite 1325
    Austin, TX 78701
    Michael A. Carrier
    Rutgers Law School
    217 North Fifth Street
    Camden, NJ 08102
    Counsel for 48 Law, Economics, and Business
    Professors and the American Antitrust Institute as
    Amici Curiae in support of Appellants
    Jonathan E. Nuechterlein, Former General Counsel
    David C. Shonka, Acting General Counsel
    Joel Marcus, Director of Litigation
    11
    Michele Arington, Assistant General Counsel
    Deborah L. Feinstein, Director
    Markus H. Meier, Acting Deputy Director
    Bradley S. Albert, Deputy Assistant Director
    Elizabeth R. Hilder
    Heather Johnson
    Jamie R. Towey
    Federal Trade Commission
    600 Pennsylvania Avenue, N.W.
    Washington, DC 20580
    Counsel for Federal Trade Commission as Amicus
    Curiae in support of Appellants
    Dimitrios T. Drivas
    Raj S. Gandesha
    Bryan D. Gant
    Sheryn E. George
    Robert A. Milne     [ARGUED]
    Brendan G. Woodard
    Amy E. Boddorff
    White & Case LLP
    1155 Avenue of the Americas
    New York, NY 10036
    Liza M. Walsh
    Connell Foley LLP
    One Newark Center
    1085 Raymond Boulevard, 19th Floor
    Newark, NJ 07102
    Counsel for Appellees Pfizer, Inc., Pfizer Ireland
    Pharmaceuticals, Warner-Lambert Company, Warner-
    Lambert Company LLC, Wyeth, Inc., Wyeth
    Pharmaceuticals, Inc., Wyeth-Whitehall
    12
    Pharmaceuticals LLC and Wyeth Pharmaceuticals
    Company
    Jonathan D. Janow
    John C. O’Quinn
    Gregory L. Skidmore
    Edwin J. U
    Karen N. Walker
    Kirkland & Ellis LLP
    655 15th Street, N.W., Suite 1200
    Washington, DC 20005
    Jay P. Lefkowitz,    [ARGUED]
    Joseph Serino, Jr.
    Steven J. Menashi
    Kirkland & Ellis LLP
    601 Lexington Avenue
    New York, NY 10022
    Counsel for Appellees Ranbaxy, Inc., Ranbaxy
    Pharmaceuticals, Inc., Ranbaxy Laboratories Ltd.,
    Teva Pharmaceutical Industries Ltd. and Teva
    Pharmaceuticals USA, Inc.
    Katherine A. Helm
    Noah M. Leibowitz [ARGUED]
    Simpson Thacher & Bartlett LLP
    425 Lexington Avenue
    New York, NY 10017
    David C. Kistler
    Blank Rome LLP
    301 Carnegie Center
    Princeton, NJ 08540
    13
    Counsel for Appellees Daiichi Sankyo Co. Ltd and
    Daiichi Sankyo, Inc.
    Victor E. Schwartz
    Philip S. Goldberg
    Cary Silverman
    Shook, Hardy & Bacon L.L.P.
    1155 F Street NW, Suite 200
    Washington, DC 20004
    Counsel for American Tort Reform Association and
    Pharmaceutical Research and Manufacturers of
    America as Amici Curiae in support of Appellees
    Jonathan D. Hacker
    Edward Hassi
    O’Melveny & Myers LLP
    1625 Eye Street NW
    Washington, DC 20006
    Counsel for Antitrust Economists as Amici Curiae in
    support of Appellees
    Ashley Bass
    Stephen Bartenstein
    Andrew D. Lazerow
    Covington & Burling LLP
    850 10th Street, N.W.
    One City Center
    Washington, D.C. 20001
    Counsel for Pharmaceutical Research and
    Manufacturers of America as Amicus Curiae in
    support of Appellees
    14
    Roy Chamcharas
    Peter J. Curtin
    William A. Rakoczy
    Rakoczy Molino Mazzochi & Siwik LLP
    6 West Hubbard Street, Suite 500
    Chicago, IL 60654
    Brian T. Burgess
    Goodwin Procter LLP
    901 New York Avenue, NW
    Suite 900 East
    Washington, DC 20001
    Christopher T. Holding
    Goodwin Procter LLP
    100 Northern Avenue
    Boston, MA 02210
    Counsel for Generic Pharmaceutical Association as
    Amicus Curiae in support of Appellees
    ______
    OPINION OF THE COURT
    ______
    FISHER, Circuit Judge.
    A pharmaceutical company holding the patent on a drug
    sues the manufacturer of a generic version of that drug for
    patent infringement. The patent-holder and the generic
    manufacturer later settle, with the former paying the latter not
    to produce a generic until the patents at issue expire. In FTC
    v. Actavis, Inc., 
    133 S. Ct. 2233
     (2013), the Supreme Court
    15
    recognized that such a settlement—commonly known as a
    “reverse payment”—where large and unjustified, can
    sometimes unreasonably diminish competition in violation of
    the antitrust laws. To answer the antitrust question, Actavis
    explained, “it is not normally necessary to litigate patent
    validity” because “the size of the unexplained reverse payment
    can provide a workable surrogate for a patent’s weakness.” 
    Id. at 2236-37
    .
    These two sets of consolidated appeals involve
    allegations that the companies holding the patents for Lipitor
    and Effexor XR delayed entry into the market of generic
    versions of those drugs. The companies did so, plaintiffs say,
    by engaging in an overarching monopolistic scheme that
    involved fraudulently procuring and enforcing the underlying
    patents and then entering into a reverse-payment settlement
    agreement with a generic manufacturer. With a single
    exception, every complaint asserts one of these
    monopolization claims against the patent-holders. The cases
    were assigned to the same district judge, who ultimately
    dismissed the bulk of plaintiffs’ claims.
    In this opinion, we address two questions of federal
    jurisdiction. First, do plaintiffs’ allegations of fraudulent
    procurement and enforcement of the patents require us to
    transfer these appeals to the Court of Appeals for the Federal
    Circuit? That court has exclusive jurisdiction over appeals
    from civil actions “arising under” patent law. 
    28 U.S.C. § 1295
    (a)(1). But not all cases presenting questions of patent law
    necessarily arise under patent law. See Christianson v. Colt
    Indus. Operating Corp., 
    486 U.S. 800
     (1986). Where, as here,
    patent law neither creates plaintiffs’ cause of action nor is a
    necessary element to any of plaintiffs’ well-pleaded claims,
    jurisdiction lies in this Court, not the Federal Circuit.
    16
    The second jurisdictional question we confront is
    confined to one of the Lipitor appeals, RP Healthcare, Inc. v.
    Pfizer, Inc., No. 14-4632. That case, brought by a group of
    California pharmacists, involves claims solely under
    California law and was filed in California state court.
    Following removal the District Court declined to remand the
    case to state court, citing potential patent defenses. That was
    error, as federal jurisdiction depends on the content of the
    plaintiff’s complaint, not a defendant’s possible defenses.
    Before final judgment, however, the remaining non-diverse
    defendants were voluntarily dismissed, thus raising the
    possibility that, notwithstanding the District Court’s failure to
    remand the case, it possessed diversity jurisdiction before the
    time it entered judgment. See Caterpillar Inc. v. Lewis, 
    519 U.S. 61
     (1996). But because the state of the record before us
    is unclear with regard to the citizenship of the parties, we
    cannot reach the merits of this appeal until that question is
    resolved. We will accordingly remand the RP Healthcare
    appeal to the District Court so it can conduct jurisdictional
    discovery and address the matter in the first instance.
    I
    It is necessary to begin by discussing the regulatory
    framework that forms the foundation for the issues presented
    by these appeals.
    A
    “Apparently most if not all reverse payment settlement
    agreements arise in the context of pharmaceutical drug
    regulation, and specifically in the context of suits brought
    under statutory provisions allowing a generic drug
    manufacturer (seeking speedy marketing approval) to
    challenge the validity of a patent owned by an already-
    approved brand-name drug owner.” Actavis, 133 S. Ct. at
    17
    2227. With the Drug Price Competition and Patent Term
    Restoration Act, 
    98 Stat. 1585
    , as amended, known as the
    Hatch-Waxman Act, Congress “attempted to balance the goal
    of ‘mak[ing] available more low cost generic drugs’ with the
    value of patent monopolies in incentivizing beneficial
    pharmaceutical advancement.” King Drug Co. v. SmithKline
    Beecham Corp., 
    791 F.3d 388
    , 394 (3d Cir. 2015) (alteration
    in original) (quoting H.R. Rep. No. 98-857, pt. 1, at 14-15
    (1984)), cert. denied, 
    137 S. Ct. 446
     (2016). “The Act seeks to
    accomplish this purpose, in part, by encouraging
    ‘manufacturers of generic drugs . . . to challenge weak or
    invalid patents on brand name drugs so consumers can enjoy
    lower drug prices.’” 
    Id.
     (alteration in original) (quoting S. Rep.
    No. 107-167, at 4 (2002)). In Actavis, the Supreme Court
    identified four relevant features of Hatch-Waxman’s
    regulatory framework. 133 S. Ct. at 2227-29; see also King
    Drug, 791 F.3d at 394-96.
    First, a drug manufacturer seeking to market a new,
    “pioneer” prescription drug must obtain approval from the
    Food and Drug Administration (FDA). See 
    21 U.S.C. § 355
    (b)(1). This approval process involves testing that is “long,
    costly, and comprehensive.” Actavis, 133 S. Ct. at 2228.
    Second, following FDA approval of a brand-name drug,
    a generic manufacturer can file an Abbreviated New Drug
    Application (ANDA) indicating that the generic “has the same
    active ingredients as, and is biologically equivalent to, the
    brand-name drug.” Caraco Pharm. Labs., Ltd. v. Novo
    Nordisk A/S, 
    566 U.S. 399
    , 405 (2012) (citing 
    21 U.S.C. § 355
    (j)(2)(A)(iv)).    The ANDA process furthers drug
    competition “by allowing the generic to piggy-back on the
    pioneer’s approval efforts.” Actavis, 133 S. Ct. at 2228.
    Third, the Hatch-Waxman Act “sets forth special
    18
    procedures for identifying, and resolving, related patent
    disputes.” Id. The new drug applicant is required to list any
    patents issued relating to the drug’s composition or methods of
    use. See 
    21 U.S.C. § 355
    (b)(1). If the FDA approves the new
    drug, it publishes this patent information, without verification,
    in its Orange Book (officially known as Approved Drug
    Products with Therapeutic Equivalence Applications). King
    Drug, 791 F.3d at 395 & n.5 (citing Caraco, 
    566 U.S. at
    405-
    06). In its ANDA, the generic manufacturer must “assure the
    FDA that its proposed generic drug will not infringe the
    brand’s patents.” Caraco, 
    566 U.S. at 406
    . One method of
    assurance is known as “paragraph IV certification,” whereby
    the generic may assert that the relevant listed patents are
    “invalid or will not be infringed by the manufacture, use, or
    sale of the [generic] drug.” 
    21 U.S.C. § 355
    (j)(2)(A)(vii)(IV).
    The filing of a paragraph IV certification “means provoking
    litigation,” Caraco, 
    566 U.S. at 407
    , as the patent statute treats
    it as an act of automatic infringement, see 
    35 U.S.C. § 271
    (e)(2)(A).      If the brand-name patentee brings an
    infringement suit within 45 days, the FDA is required to
    withhold approving the generic for a 30-month period. If the
    courts decide the matter during that period, the FDA will
    follow that determination; if not, the FDA may move forward
    on its own. See 
    21 U.S.C. § 355
    (j)(5)(B)(iii).
    Fourth, “Hatch-Waxman provides a special incentive
    for a generic to be the first to file an [ANDA] taking the
    paragraph IV route.” Actavis, 133 S. Ct. at 2228-29. From the
    time it begins marketing its generic, the first-filer enjoys a 180-
    day exclusivity period during which no other generic can
    compete with the brand-name drug. See 
    21 U.S.C. § 355
    (j)(5)(B)(iv). This exclusivity period “can prove valuable,
    possibly ‘worth several hundred million dollars.’” Actavis,
    133 S. Ct. at 2229 (quoting C. Scott Hemphill, Paying for
    19
    Delay: Pharmaceutical Patent Settlement as a Regulatory
    Design Problem, 
    81 N.Y.U. L. Rev. 1553
    , 1579 (2006)). The
    right to exclusivity belongs to the first-filer alone and is
    nontransferable. See 
    21 U.S.C. § 355
    (j)(5)(D). However,
    Hatch-Waxman does not preclude the underlying patent-holder
    from marketing a brand-generic version of its drug—known as
    an “authorized generic”—during the 180-day exclusivity
    period. See Mylan Pharm., Inc. v. FDA, 
    454 F.3d 270
    , 276-77
    (4th Cir. 2006); Teva Pharm. Indus. Ltd. v. Crawford, 
    410 F.3d 51
    , 55 (D.C. Cir. 2005); see also King Drug, 791 F.3d at 393;
    Sanofi-Aventis v. Apotex Inc., 
    659 F.3d 1171
    , 1174-75 (Fed.
    Cir. 2011).
    B
    In Actavis, the Supreme Court addressed whether
    reverse-payment settlements in the Hatch-Waxman context are
    subject to antitrust scrutiny. The Court concluded that such
    settlements “can sometimes violate the antitrust laws.” 133 S.
    Ct. at 2227. That is so, the Court held, because “[a]n
    unexplained large reverse payment itself would normally
    suggest that the patentee has serious doubts about the patent’s
    survival,” thus “suggest[ing] that the payment’s objective is to
    maintain supracompetitive prices to be shared among the
    patentee and the challenger rather than face what might have
    been a competitive market.” Id. at 2237.
    Actavis rejected an approach known as the “scope of the
    patent” test, a near-categorical rule that “absent sham litigation
    or fraud in obtaining the patent, a reverse payment settlement
    is immune from antitrust attack so long as its anticompetitive
    effects fall within the scope of the exclusionary potential of the
    patent.” FTC v. Watson Pharm., Inc., 
    677 F.3d 1298
    , 1312
    (11th Cir. 2012), rev’d sub nom. Actavis, 
    133 S. Ct. 2223
    . The
    Court concluded that it would be “incongruous to determine
    20
    antitrust legality by measuring the settlement’s anticompetitive
    effects solely against patent law policy, rather than by
    measuring them against procompetitive antitrust policies as
    well.” Actavis, 
    133 S. Ct. at 2231
    . Instead, the Court’s
    precedents “indicated that patent and antitrust policies are both
    relevant in determining the ‘scope of the patent monopoly’—
    and consequently antitrust law immunity—that is conferred by
    a patent.” 
    Id.
     The Court viewed these cases as “seek[ing] to
    accommodate patent and antitrust policies, finding challenged
    terms and conditions unlawful unless patent law policy offsets
    the antitrust law policy strongly favoring competition.” 
    Id. at 2233
    ; see 
    id. at 2244
     (Roberts, C.J., dissenting) (“The majority
    seems to think that even if the patent is valid, a patent holder
    violates the antitrust laws merely because the settlement took
    away some chance that his patent would be declared invalid by
    a court.”). Finally, the Court observed, among other things,
    that “it is normally not necessary to litigate patent validity to
    answer the antitrust question (unless, perhaps, to determine
    whether the patent litigation is a sham).” 
    Id. at 2236
     (majority
    opinion). Such antitrust questions are to be addressed under
    the traditional rule-of-reason analysis. See 
    id. at 2237-38
    .
    II
    A
    In In re Lipitor Antitrust Litigation, Nos. 14-1402 et al.,
    plaintiffs are a putative class of direct-purchasers of branded
    Lipitor, a putative class of end-payors, and four individual-
    retailers asserting direct-purchaser claims. We will refer to
    these three groups of plaintiffs collectively as the “Lipitor
    plaintiffs.” Defendants are Pfizer Inc., Ranbaxy Inc., and their
    respective corporate affiliates; they will be referred to
    collectively as the “Lipitor defendants.” There is also a fourth
    group of plaintiffs—several California-based pharmacists
    21
    raising claims under California law—that we will refer to
    independently as the “RP Healthcare plaintiffs.” In addition
    to suing the Lipitor defendants, the RP Healthcare plaintiffs
    also named additional parties as defendants whose relevance
    we will explore in Part V, infra.
    1
    Warner-Lambert Co. developed atorvastatin, the active
    ingredient in its blockbuster brand-name drug Lipitor. One of
    the best-selling pharmaceutical products of all time, Lipitor
    reduces the level of bad LDL cholesterol in the bloodstream.
    Warner-Lambert, in partnership with Pfizer, launched Lipitor
    in 1997. The two companies merged in 2002, and we will refer
    to them collectively as “Pfizer.”
    In 1987, Pfizer obtained the original patent for Lipitor.
    That patent—designated 
    U.S. Patent No. 4,681,893
     (the ‘893
    Patent)—claims protection for atorvastatin. Initially scheduled
    to expire in May 2006, Pfizer eventually secured extensions on
    the ‘893 Patent’s term through March 24, 2010. Pfizer
    obtained additional, follow-on patent protection for Lipitor in
    December 1993, when the Patent and Trademark Office (PTO)
    issued 
    U.S. Patent No. 5,273,995
     (the ‘995 Patent). That patent
    claims atorvastatin calcium, the specific salt form of the active
    atorvastatin molecule in Lipitor. The Lipitor plaintiffs assert
    that Pfizer committed fraud with regard to the procurement and
    enforcement of the ‘995 Patent. In particular, the Lipitor
    plaintiffs allege that Pfizer submitted false and misleading data
    to the PTO to support its claim that the cholesterol-synthesis
    inhibiting activity of atorvastatin calcium was surprising and
    unexpected. The ‘995 Patent expired on June 28, 2011.
    Following Lipitor’s 1997 launch, Pfizer obtained five
    additional patents, all of which, according to the Lipitor
    22
    plaintiffs, could not block further generic versions of the drug
    from coming to market. Pfizer listed all Lipitor patents in the
    FDA’s Orange Book, with the exception of the process patents,
    which cannot be listed. The Lipitor plaintiffs allege fraud only
    with regard to the procurement and enforcement of the ‘995
    Patent.
    After obtaining ANDA first-filer status for generic
    Lipitor in August 2002, Ranbaxy notified Pfizer of its
    paragraph IV certifications, which contended that none of the
    valid patent claims that covered Lipitor would be infringed by
    the sale, marketing, or use of its generic. Pfizer sued Ranbaxy
    in the District Court for the District of Delaware within the 45-
    day period prescribed by Hatch-Waxman, alleging that
    Ranbaxy’s generic would infringe the ‘893 and ‘995 Patents.
    Pursuant to Hatch-Waxman, the filing of Pfizer’s lawsuit
    stayed FDA approval of Ranbaxy’s ANDA for 30 months.
    After a bench trial, the district court ruled that Pfizer’s
    patents were valid and enforceable and would be infringed by
    Ranbaxy’s generic. Pfizer Inc. v. Ranbaxy Labs. Ltd., 
    405 F. Supp. 2d 495
    , 525-26 (D. Del. 2005). On appeal, the Federal
    Circuit largely agreed, affirming the district court’s ruling that
    the ‘893 Patent would be infringed. Pfizer Inc. v. Ranbaxy
    Labs. Ltd., 
    457 F.3d 1284
    , 1286 (Fed. Cir. 2006). The Federal
    Circuit reversed in part, however, holding that claim 6 of the
    ‘995 Patent was invalid due to what amounted to a scrivener’s
    error in the drafting of the claim. Id. at 1291-92. On remand,
    the district court enjoined FDA approval of Ranbaxy’s ANDA
    until March 24, 2010, the date of the ‘893 Patent’s expiration.
    Also in response to the Federal Circuit’s ruling, Pfizer applied
    for a reissuance of the ‘995 Patent to cure the drafting error.
    Ranbaxy filed an objection to the reissuance with the PTO.
    In July 2005, as the 30-month statutory window halting
    23
    Ranbaxy’s generic market entry was closing, Pfizer filed a
    citizen petition with the FDA stating that the amorphous
    noncrystalline form of atorvastatin used in generic Lipitor
    (including Ranbaxy’s, as identified in its ANDA) may be
    “inferior in quality” to branded Lipitor’s crystalline form.
    Lipitor J.A. 1851. The Lipitor plaintiffs claim that this citizen
    petition was a sham. In May 2006, the FDA informed Pfizer
    that it had not yet reached a decision, citing the need for further
    review and analysis. The FDA denied the petition in a 12-page
    decision issued on November 30, 2011.
    Around the same time as their Lipitor patent dispute,
    Pfizer and Ranbaxy were also locked in patent-infringement
    litigation regarding a separate drug called Accupril. After
    Ranbaxy received ANDA approval and began marketing a
    generic Accupril product in conjunction with Teva
    Pharmaceuticals, Pfizer sued Ranbaxy and Teva in the District
    of New Jersey. On March 25, 2005, the district court issued a
    preliminary injunction halting Ranbaxy’s sales of generic
    Accupril, subject to Pfizer posting a $200 million bond to cover
    Ranbaxy’s damages in the event the injunction was
    improvidently granted. The Federal Circuit affirmed without
    prejudice to an ultimate resolution of the merits. Pfizer Inc. v.
    Teva Pharm. USA, Inc., 
    429 F.3d 1364
    , 1383 (Fed. Cir. 2005).
    On June 13, 2007, in light of the disputed patent’s expiration,
    the district court vacated the preliminary injunction. The only
    issues that remained contested were Pfizer’s limited claims for
    past damages and Ranbaxy’s counterclaim as secured by the
    preliminary injunction bond.
    In March 2008, Pfizer again sued Ranbaxy in the
    District of Delaware, this time claiming that Ranbaxy’s generic
    Lipitor would infringe Pfizer’s two Lipitor-related process
    patents. Not long after, on June 18, 2008, Pfizer and Ranbaxy
    24
    publically announced that they had reached a near-global
    litigation settlement—which the Lipitor plaintiffs allege
    constituted an unlawful reverse payment—regarding scores of
    patent litigations around the world, including the Lipitor and
    Accupril disputes. In particular, the settlement ended the
    Accupril litigation with prejudice, all domestic patent
    infringement litigation between Pfizer and Ranbaxy pertaining
    to Lipitor, and all foreign litigation between the two companies
    over Lipitor. As a result of the settlement, Ranbaxy received a
    licensed entry date of November 30, 2011 for generic Lipitor,
    Pfizer and Ranbaxy negotiated similar market entry dates for
    generic Lipitor in several foreign jurisdictions, Ranbaxy paid
    $1 million to Pfizer in connection with the Accupril litigation,
    and Pfizer’s $200 million injunction bond from the Accupril
    litigation was cancelled. Ranbaxy also withdrew its objection
    to the ‘995 Patent’s reissuance. The PTO reissued the ‘995
    Patent in March 2009.
    As part of the agreement, Ranbaxy delayed entry of its
    generic to March 2010, when the ‘983 Patent was set to expire.
    Due to its ANDA first-filer status, Ranbaxy was entitled to 180
    days of market exclusivity. The Pfizer-Ranbaxy agreement
    consequently had the effect of maintaining a bottleneck over
    the entry of generic Lipitor from later ANDA filers. Any other
    would-be generic manufacturer that wanted the 180-day period
    to begin earlier than November 2011 would need a court to
    hold that all of Pfizer’s Orange Book-listed patents were
    invalid or not infringed. Pfizer helped to forestall this
    possibility, the Lipitor plaintiffs say, through a combination of
    several lawsuits against subsequent ANDA filers. The FDA
    approved Ranbaxy’s Lipitor ANDA on November 30, 2011,
    the day Ranbaxy’s license to the unexpired Lipitor patents
    commenced.
    25
    2
    Beginning in November 2011, the Lipitor direct-
    purchasers and end-payors, as well as the RP Healthcare
    plaintiffs, filed separate antitrust actions in various federal
    jurisdictions. The cases were referred to the Judicial Panel on
    Multidistrict Litigation (JPML) for coordination. In January
    2012, the RP Healthcare plaintiffs withdrew their federal suit
    and refiled in California state court raising claims solely under
    California law. That suit was removed to federal court two
    months later.
    The JPML transferred each case to the District of New
    Jersey, and assigned the matters to Judge Peter G. Sheridan.
    See In re Lipitor Antitrust Litig., 
    856 F. Supp. 2d 1355
    (J.P.M.L. 2012); In re Lipitor Antitrust Litig., 
    2012 WL 4069565
     (J.P.M.L. Aug. 3, 2012). Thereafter, the direct-
    purchaser and end-payor plaintiffs filed amended class action
    complaints; the individual-retailer plaintiffs likewise filed
    complaints joining the consolidated proceedings.           The
    complaints are substantively identical, raising the same two
    claims: First, a monopolization claim under section 2 of the
    Sherman Act (
    15 U.S.C. § 2
    ) or a state analogue against Pfizer,
    asserting that the company engaged in an overarching
    anticompetitive scheme that involved fraudulently procuring
    the ‘995 Patent from the PTO (Walker Process fraud),
    enforcing the ‘995 Patent and certain process patents through
    sham litigation, filing a sham citizen petition with the FDA,
    and entering into a reverse-payment settlement with Ranbaxy.
    Second, the Lipitor plaintiffs raise a claim under section 1 of
    the Sherman Act (
    15 U.S.C. § 1
    ) or a state analogue against
    both Pfizer and Ranbaxy, challenging the reverse-payment
    settlement as an unlawful restraint of trade. We will refer to
    these claims, respectively, as the “section 2 monopolization
    26
    claim” and the “section 1 restraint of trade claim.”
    The RP Healthcare plaintiffs’ amended complaint
    raises an altogether different claim under California’s antitrust
    statute, the Cartwright Act, 
    Cal. Bus. & Prof. Code § 16700
     et
    seq. They allege that Pfizer, Ranbaxy, a Japanese company
    called Daiichi Sankyo (and an affiliate), and two large
    pharmacies entered into a per se unlawful market allocation
    agreement regarding Lipitor. This agreement, according to the
    RP Healthcare plaintiffs, extended the life of Pfizer’s Lipitor-
    related patents and fixed prices for Lipitor and its generic
    equivalents at supracompetitive levels.
    The Lipitor defendants filed motions to dismiss all
    complaints under Federal Rule of Civil Procedure 12(b)(6).
    On October 19, 2012, the District Court denied the RP
    Healthcare plaintiffs’ motion to remand to California state
    court, reasoning that “there may be many patent issues raised
    as defenses in this case which would engender federal
    jurisdiction.” Lipitor J.A. 2. And on May 16, 2013, the District
    Court stayed proceedings pending the Supreme Court’s
    decision in Actavis. In light of Actavis, the District Court
    reopened the case and permitted the parties to file supplemental
    briefs on the pending motions to dismiss.
    On September 5, 2013, the District Court dismissed the
    Lipitor plaintiffs’ complaints to the extent they were based on
    anything other than the reverse-payment settlement. In re
    Lipitor Antitrust Litig., 
    2013 WL 4780496
     (D.N.J. Sept. 5,
    2013). In particular, the District Court rejected the Walker
    Process, sham litigation, and sham FDA citizen petition
    aspects of the Lipitor plaintiffs’ monopolization claims. Id. at
    *15-23. The court also granted leave to file amended
    complaints focused solely on the Pfizer-Ranbaxy reverse
    payment. Id. at *25-27.
    27
    The Lipitor plaintiffs filed amended complaints in
    October 2013. The direct-purchasers and end-payors attached
    their prior complaints as exhibits to their new complaints to
    preserve for appeal the allegations that had been dismissed.
    For their part, the independent-retailers stated in the first
    paragraph of their new complaints that they were also
    preserving the previously dismissed claims.
    In November 2013, the Lipitor defendants once again
    moved to dismiss. On September 12, 2014, the District Court
    dismissed with prejudice the Lipitor direct-purchasers’
    remaining argument that the Pfizer-Ranbaxy settlement was
    unlawful under Actavis. In re Lipitor Antitrust Litig., 
    46 F. Supp. 3d 523
     (D.N.J. 2014). The complaints of the end-payor,
    individual-retailer, and RP Healthcare plaintiffs were
    subsequently dismissed with prejudice in light of the District
    Court’s opinion.
    The direct-purchasers filed a motion to amend the
    judgment and for leave to file an amended complaint, arguing
    that the District Court applied a novel pleading standard. That
    motion was denied on March 17, 2015. Lipitor J.A. 151-52.
    These timely appeals followed.
    B
    In In re Effexor XR Antitrust Litigation, Nos. 15-1184
    et al., plaintiffs are a putative class of direct-purchasers of
    branded Effexor XR, a putative class of end-payors, two
    individual third-party payors, and four individual-retailers
    asserting direct-purchaser claims. We will refer to these
    parties collectively as the “Effexor plaintiffs.” Defendants are
    Wyeth, Inc., Teva Pharmaceutical Industries Ltd., and their
    respective corporate affiliates. We will likewise refer to these
    parties collectively as the “Effexor defendants.”
    28
    1
    In 1985, the PTO issued a patent for the compound
    venlafaxine hydrochloride. That patent was assigned to
    American Home Products, Wyeth’s predecessor. Eight years
    later, in 1993, the FDA granted Wyeth approval to begin
    marketing Effexor, a drug used to treat major depression.
    Effexor’s active ingredient is venlafaxine hydrochloride; the
    patent for that compound expired on June 13, 2008. In 1997,
    Wyeth introduced Effexor XR, an extended release, once-daily
    version. Wyeth obtained three patents for Effexor XR, all of
    which expired on March 20, 2017. The Effexor plaintiffs
    contend that Wyeth obtained the Effexor XR patents through
    fraud on the PTO, improperly listed those patents in the FDA’s
    Orange Book, and enforced those patents through serial sham
    litigation.
    On December 10, 2002, Teva filed a paragraph IV
    certification challenging the validity of Wyeth’s Effexor XR
    patents. As the first company to file an ANDA with a
    paragraph IV certification for generic Effexor XR, Teva was
    entitled to Hatch-Waxman’s 180-day period of marketing
    exclusivity. Wyeth brought suit against Teva for patent
    infringement in the District of New Jersey.
    In October 2005, shortly after the district court held a
    Markman hearing on claim construction, Wyeth and Teva
    reached a settlement. Under the settlement, which the Effexor
    plaintiffs allege constitutes an unlawful reverse payment,
    Wyeth and Teva reached an agreed-upon entry date of July 1,
    2010 for generic Effexor XR, nearly seven years before the
    expiration of Wyeth’s patents related to that drug. Wyeth
    further agreed that it would not market an authorized-generic
    Effexor XR during Teva’s 180-day exclusivity period. In
    return, Teva would pay Wyeth royalties for the license,
    29
    beginning at 15% during the 180-day period. If Wyeth chose
    not to introduce an authorized-generic after 180 days and no
    other generic entered the market, Teva was required to pay
    Wyeth 50% royalties for the next 180 days and 65% thereafter
    for up to 80 months. Moreover, in accordance with the
    settlement, Wyeth granted Teva a license to begin selling
    generic immediate release Effexor (Effexor IR) for two years
    prior to the June 2008 expiration of the original venlafaxine
    hydrochloride patent and agreed that it would not compete with
    Teva’s marketing of generic Effexor IR during that two-year
    period. Teva, for its part, would pay Wyeth 28% royalties
    during the first year and 20% during the second year.
    Wyeth and Teva filed the settlement agreement with the
    district court presiding over the patent infringement litigation.
    In accordance with a 2002 consent decree, the Federal Trade
    Commission (FTC) had the right to weigh in on Wyeth’s
    settlements and to raise objections in advance. It offered no
    objection. The settlement was also submitted to the FTC and
    the U.S. Department of Justice pursuant to section 1112 of the
    Medicare Prescription Drug, Improvement, and Modernization
    Act of 2003, Pub. L. No. 108-173, 
    117 Stat. 2066
    , 2461-63
    (2003) (codified at 
    21 U.S.C. § 355
     note). The district court
    thereafter entered orders vacating its prior Markman rulings,
    dismissing the case, and adopting the terms of the settlement
    as a consent decree and permanent injunction. Effexor J.A.
    1298.
    Following the Wyeth-Teva settlement, between April
    2006 and August 2011, Wyeth brought patent infringement
    suits against sixteen other companies that sought to market a
    generic Effexor XR. All suits settled under terms stipulating
    that Wyeth’s patents were valid and infringed.
    2
    30
    Beginning in May 2011, several direct-purchasers of
    Effexor XR filed class action complaints in the Southern
    District of Mississippi challenging the lawfulness of the
    Wyeth-Teva settlement agreement.           The cases were
    consolidated and, on September 21, 2011, the court transferred
    the action to the District of New Jersey.
    After transfer, the direct-purchasers filed an amended
    consolidated class action complaint, a group of end-payors
    joined the case with a consolidated class action complaint of
    their own, four individual-retailers filed complaints, and two
    individual third-party payors together filed their own
    complaint. The complaints are substantially similar: Each
    alleges a monopolization claim against Wyeth under section 2
    of the Sherman Act or analogous state statutes, asserting that
    Wyeth fraudulently induced the PTO to issue the three patents
    covering Effexor XR (Walker Process fraud), wrongfully
    listed those patents in the Orange Book, enforced those patents
    through serial sham litigation, and entered into a reverse-
    payment settlement with Teva. The complaints also raise a
    claim under section 1 of the Sherman Act or a state analogue
    against both Wyeth and Teva, challenging the reverse-payment
    settlement as an unlawful restraint of trade. As with the Lipitor
    appeals, we will refer to these claims, respectively, as the
    “section 2 monopolization claim” and the “section 1 restraint
    of trade claim.” (Though otherwise similar to the other
    complaints, the individual third-party payors’ complaint names
    only Wyeth and its affiliates as defendants. They also raise
    additional claims not relevant to these appeals.)
    The Effexor defendants filed motions to dismiss under
    Rule 12(b)(6), but the District Court stayed proceedings
    pending the Supreme Court’s decision in Actavis. After
    Actavis was issued, the District Court vacated the stay,
    31
    reopened the case, and called for supplemental briefing on the
    pending motions to dismiss. On October 23, 2013, the direct-
    purchasers (but no other party) filed an amended complaint.
    On October 6, 2014, the District Court granted in part
    and denied in part the Effexor defendants’ motions to dismiss.
    In re Effexor XR Antitrust Litig., 
    2014 WL 4988410
     (D.N.J.
    Oct. 6, 2014). It rejected the Effexor plaintiffs’ challenges to
    the Wyeth-Teva reverse-payment settlement and dismissed
    with prejudice the section 1 restraint of trade claims. 
    Id.
     at *19-
    24. However, the District Court declined to dismiss the Effexor
    plaintiffs’ Walker Process allegations against Wyeth. Id. at
    *24-26. At the Effexor plaintiffs’ request, the court granted
    final judgment on the restraint of trade claims under Federal
    Rule of Civil Procedure 54(b).
    These timely appeals followed. On February 27, 2015,
    the Effexor defendants moved this Court to transfer the Effexor
    appeals to the Federal Circuit on the ground that the Effexor
    plaintiffs’ complaints assert claims that arise under patent law.
    We denied the motion without prejudice to the Effexor
    defendants raising the jurisdictional argument in their merits
    briefs.
    III
    The District Court possessed subject-matter
    jurisdiction, at a minimum, under the following statutes: With
    respect to the Lipitor and Effexor direct-purchasers and
    independent-retailers, the District Court had jurisdiction under
    
    28 U.S.C. §§ 1331
     and 1337(a). With respect to the Lipitor
    and Effexor end-payors, the District Court had jurisdiction
    under 
    28 U.S.C. § 1332
    (d). And with respect to the Effexor
    independent third-party payors, the District Court had
    jurisdiction under 
    28 U.S.C. § 1332
    (a)(1) and (3).
    32
    The Lipitor and Effexor defendants contend that the
    District Court also had jurisdiction over each of these cases
    under 
    28 U.S.C. § 1338
    (a), thus necessitating transfer of these
    appeals to the Federal Circuit. The RP Healthcare plaintiffs,
    for their part, argue that the District Court did not possess
    subject-matter jurisdiction at all; they say their case properly
    belongs in California state court.
    Though our jurisdiction to reach the merits of these
    appeals is disputed, “it is familiar law that a federal court
    always has jurisdiction to determine its own jurisdiction.”
    United States v. Ruiz, 
    536 U.S. 622
    , 628 (2002); see also
    Bender v. Williamsport Area Sch. Dist., 
    475 U.S. 534
    , 542
    (1986); Brown v. Keene, 33 U.S. (8 Pet.) 112, 116 (1834). We
    therefore, for purposes of this opinion, have jurisdiction under
    
    28 U.S.C. § 1291
    . Our review of the jurisdictional questions
    at issue is plenary. In re NFL Players Concussion Injury Litig.,
    
    775 F.3d 570
    , 576 (3d Cir. 2014).
    IV
    Like all other federal courts, we are a court of limited
    jurisdiction, possessing “only that power authorized by
    Constitution and statute.” Kokkonen v. Guardian Life Ins. Co.
    of Am., 
    511 U.S. 375
    , 377 (1994). As an Article III court
    established by Congress, our appellate jurisdiction is “purely
    statutory.” Heike v. United States, 
    217 U.S. 423
    , 428 (1910).
    The United States Courts of Appeals have general
    appellate jurisdiction over “appeals from all final decisions of
    the district courts of the United States.” 
    28 U.S.C. § 1291
    . But
    carved out of § 1291’s jurisdictional grant is the Court of
    Appeals for the Federal Circuit. Congress vested that court
    with “exclusive jurisdiction of an appeal from a final decision
    of a district court of the United States . . . in any civil action
    arising under . . . any Act of Congress relating to patents.” Id.
    33
    § 1295(a)(1) (emphasis added). The federal district courts, in
    turn, “have original jurisdiction of any civil action arising
    under any Act of Congress relating to patents.” Id. § 1338(a).
    “Thus, the Federal Circuit’s jurisdiction is fixed with reference
    to that of the district court, and turns on whether the action
    arises under federal patent law.” Holmes Grp., Inc. v. Vornado
    Air Circulation Sys., Inc., 
    535 U.S. 826
    , 829 (2002). So if the
    District Court here had jurisdiction over at least one claim in a
    particular case under § 1338(a), the Federal Circuit has
    exclusive jurisdiction of that appeal. See Apotex, Inc. v.
    Thompson, 
    347 F.3d 1335
    , 1342 (Fed. Cir. 2003); see also 19
    James Wm. Moore & George C. Pratt, Moore’s Federal
    Practice § 208.10[2], p. 208-16 (3d ed. 2017) (“The minimum
    jurisdictional requirement is the existence of at least one claim
    under the patent . . . statutes, and in a mixed case, the Federal
    Circuit has jurisdiction to decide all of the issues involved in
    the appeal.” (footnote omitted)). In that circumstance, we
    would lack jurisdiction and be required to transfer these
    appeals to the Federal Circuit. See 
    28 U.S.C. § 1631
    ; In re
    Arunchalam, 
    812 F.3d 290
    , 293-94 (3d Cir. 2016) (per
    curiam).
    The discussion that follows applies to both sets of
    appeals. Consequently, unless otherwise indicated, we will
    refer to the Lipitor and Effexor plaintiffs collectively as the
    “plaintiffs” and the Lipitor and Effexor defendants collectively
    as the “defendants.”
    A
    The Supreme Court’s pathmarking decision addressing
    the Federal Circuit’s patent-law jurisdiction is Christianson v.
    Colt Industries Operating Corp., 
    486 U.S. 800
     (1986). At the
    time, the Federal Circuit’s jurisdictional statute vested that
    court with “exclusive jurisdiction of an appeal from a final
    34
    decision of a district court of the United States . . . if the
    decision of a district court was based, in whole or in part, on
    [28 U.S.C.] § 1338.” 
    28 U.S.C. § 1295
    (a)(1). Then, as now, §
    1338(a) granted the district courts “original jurisdiction of any
    civil action arising under any Act of Congress relating to
    patents.” Section 1338(a) uses the same operative language as
    
    28 U.S.C. § 1331
    , the statute that gives the district courts
    “original jurisdiction of all civil actions arising under the
    Constitution, laws, or treaties of the United States.” (Emphasis
    added.).
    Christianson held that “[l]inguistic consistency”
    requires that courts apply the same jurisdictional test to
    determine whether a case arises under § 1331 as it would under
    § 1338(a). 486 U.S. at 808. Under § 1338(a), then, jurisdiction
    extends “only to those cases in which a well-pleaded complaint
    establishes either that federal patent law creates the cause of
    action or that the plaintiff’s right to relief necessarily depends
    on resolution of a substantial question of federal patent law, in
    that patent law is a necessary element of one of the well-
    pleaded claims.” Id. at 809. As in the § 1331 context, the
    determination whether a claim “arises under” patent law must
    be made in accordance with the time-honored well-pleaded-
    complaint rule. And as “appropriately adapted to § 1338(a),”
    that rule provides that the answer to whether a claim “arises
    under” patent law “must be determined from what necessarily
    appears in the plaintiff’s statement of his own claim in the bill
    or declaration, unaided by anything alleged in anticipation or
    avoidance of defenses which it is thought the defendant may
    interpose.” Id. (quoting Franchise Tax Bd. of Cal. v. Constr.
    Laborers Vacation Trust, 
    463 U.S. 1
    , 10 (1983)).
    For those cases in which federal patent law does not
    create the cause of action, it is not “necessarily sufficient that
    35
    a well-pleaded claim alleges a single theory under which
    resolution of a patent-law question is essential.” Id. at 810.
    Rather, if “‘on the face of a well-pleaded complaint there are .
    . . reasons completely unrelated to the provisions and purposes
    of [the patent laws] why the [plaintiff] may or may not be
    entitled to the relief it seeks,’ then the claim does not ‘arise
    under’ those laws.” Id. (alterations in original) (quoting
    Franchise Tax Bd., 
    463 U.S. at 26
    ). “Thus,” Christianson
    explained, “a claim supported by alternative theories in the
    complaint may not form the basis for § 1338(a) jurisdiction
    unless patent law is essential to each of those theories.” Id.
    The complaint in Christianson contained an antitrust
    count that the Court understood as raising a monopolization
    claim under section 2 of the Sherman Act and a group-boycott
    claim under section 1. See id. Even though the claims included
    allegations of patent invalidity, the Court held that the Federal
    Circuit lacked jurisdiction because the “patent-law issue, while
    arguably necessary to at least one theory under each claim,
    [was] not necessary to the overall success of either claim.” Id.
    As to the complaint’s section 2 monopolization claim,
    the Court first identified the “thrust” of the allegations, namely,
    that Colt, the defendant, “embarked on a course of conduct to
    illegally extend its monopoly position with respect to the
    described patents and to prevent” plaintiffs from competing.
    Id. But because the well-pleaded-complaint rule “focuses on
    claims, not theories,” the Court emphasized that “just because
    an element that is essential to a particular theory might be
    governed by federal patent law does not mean that the entire
    monopolization claim ‘arises under’ patent law.” Id. at 811.
    One such theory involved allegations that certain Colt trade
    secrets were not protected under state law because their
    underlying patents were invalid. But after parsing the
    36
    complaint, the Court observed that this monopolization theory
    was “only one of several, and the only one for which the patent-
    law issue is even arguably essential.” Id. Because there were
    “‘reasons completely unrelated to the provisions and purposes’
    of federal patent law why [the plaintiffs] ‘may or may not be
    entitled to the relief they [sought]’ under their monopolization
    claim, the claim [did] not ‘arise under’ patent law.” Id. at 812
    (quoting Franchise Tax Bd., 
    463 U.S. at 26
    ).
    The same result obtained with regard to the plaintiffs’
    section 1 group-boycott claim. That claim involved allegations
    that Colt engaged in a group-boycott to protect its trade secrets.
    And like the section 2 monopolization claim, one theory of
    recovery involved assertions that Colt’s patents protecting its
    trade secrets were invalid. “Whether or not the patent-law
    issue was an ‘essential’ element of that group-boycott theory,”
    the Court noted, plaintiffs “could have supported their group-
    boycott claim with any of several theories having nothing to do
    with the validity of Colt’s patents.” Id. at 813. Instead, “the
    appearance on the complaint’s face of an alternative, non-
    patent theory compel[led] the conclusion that the group-
    boycott claim [did] not ‘arise under’ patent law.” Id.
    Four working principles underlie the Court’s decision in
    Christianson. First, whether a claim “arises under” federal
    patent law is made by reference to the well-pleaded complaint.
    See Holmes Grp., 
    535 U.S. at 829-30
    .                 Second, for
    jurisdictional purposes, regardless of how a complaint labels
    its claims or counts, courts are to look to the complaint and its
    allegations as a whole to identify the plaintiff’s claims and any
    theories undergirding those claims. Third, in the antitrust
    context, courts must attend to the thrust of the plaintiff’s
    allegations and then determine the theories that explain why
    certain alleged conduct was anticompetitive. And finally, after
    37
    distinguishing between claims and theories, courts then must
    ascertain whether each theory supporting a claim necessarily
    requires the resolution of a substantial question of patent law.
    If one theory does not, the Federal Circuit lacks appellate
    jurisdiction. See ClearPlay, Inc. v. Abecassis, 
    602 F.3d 1364
    ,
    1369 (Fed. Cir. 2010) (“Christianson embraces a distinctly
    non-holistic approach to ‘arising under’ jurisdiction. It is not
    enough that patent law issues are in the air. Instead, resolution
    of a patent law issue must be necessary to every theory of relief
    under at least one claim in the plaintiff’s complaint.” (emphasis
    added)).
    B
    Applying these principles, we conclude that the actions
    brought by the Lipitor and Effexor plaintiffs do not “arise
    under” patent law. We note at the outset a clear and undisputed
    aspect of our jurisdictional inquiry. Federal and state antitrust
    law, not federal patent law, creates plaintiffs’ claims. This
    case, like Christianson itself, turns on the second head of
    “arising under” jurisdiction. And so we must decide whether
    plaintiffs’ well-pleaded complaints state at least one claim
    upon which their “right to relief necessarily depends on
    resolution of a substantial question of federal patent law, in that
    patent law is a necessary element of one of the well-pleaded
    claims.” Christianson, 486 U.S. at 809.
    Defendants do not argue that plaintiffs’ section 1
    restraint of trade claims arise under patent law. Those claims
    relate only to the Pfizer-Ranbaxy and Wyeth-Teva reverse-
    payment settlements.        Defendants instead home in on
    plaintiffs’ section 2 monopolization claims. Recall that the
    thrust of those claims is that Pfizer and Wyeth each engaged in
    an overall scheme to monopolize the markets for their
    respective branded Lipitor and Effexor XR drugs. Those
    38
    schemes, plaintiffs allege, were furthered in part by the
    companies’ fraudulent procurement and enforcement of certain
    patents relating to the drugs. But the schemes were also
    furthered by the reverse-payment settlements (and, in the
    Lipitor appeals, the filing of a sham FDA citizen petition).
    The fraudulent procurement of a patent—known as
    Walker Process fraud, see Walker Process Equip., Inc. v. Food
    Mach. & Chem. Corp., 
    382 U.S. 172
     (1965) (recognizing that
    a patentee’s knowing and willful misrepresentation of facts to
    the PTO can strip the patentee of immunity under the antitrust
    laws)—requires a plaintiff to show, among other things, that
    the patentee committed fraud before the PTO, that the fraud
    caused the patent to issue, and that the patentee enforced the
    fraudulently procured patent, Unitherm Food Sys., Inc. v.
    Swift-Eckrich, Inc., 
    375 F.3d 1341
    , 1355 (Fed. Cir. 2004),
    rev’d on other grounds, 
    546 U.S. 394
     (2006). Walker Process
    fraud has for some time been considered by courts to present a
    substantial question of patent law. See In re DDAVP Antitrust
    Litig., 
    585 F.3d 677
    , 685 (2d Cir. 2009); In re Ciprofloxacin
    Antitrust Litig., 
    544 F.3d 1323
    , 1330 n.8 (Fed. Cir. 2008)
    (“[T]he determination of fraud before the PTO necessarily
    involves a substantial question of patent law.”); Nobelpharma
    AB v. Implant Innovations, Inc., 
    141 F.3d 1059
    , 1068 (Fed. Cir.
    1998) (en banc in relevant part) (“[W]hether conduct in
    procuring or enforcing a patent is sufficient to strip a patentee
    of its immunity from the antitrust laws is to be decided as a
    question of Federal Circuit law.”). And to the extent plaintiffs’
    sham litigation and false Orange Book listing theories depend
    on a successful showing of Walker Process fraud, they too
    could present substantial questions of patent law. See DDAVP,
    
    585 F.3d at 685
    ; Nobelpharma, 
    141 F.3d at 1071-72
    . We
    recognize as well that the substantiality of these theories may
    be open to debate following Gunn v. Minton, 
    133 S. Ct. 1059
    39
    (2013). That case held, in the context of a state legal
    malpractice claim, that hypothetical, backward-looking, case-
    within-a-case questions of patent law that do not change the
    real-world result of prior federal patent litigation do not present
    a substantial patent-law issue. 
    Id. at 1067-68
    . We need not
    definitively address the substantiality of plaintiffs’ Walker
    Process, sham litigation, and false Orange Book listing
    theories in light of Gunn. For even assuming that these theories
    do present substantial questions of patent law, plaintiffs’ right
    to relief on their section 2 monopolization claims does not
    depend upon them.
    Here, plaintiffs could obtain relief on their section 2
    monopolization claims by prevailing on an alternative, non-
    patent-law theory, namely, that Pfizer and Wyeth monopolized
    the market in their respective branded drugs by engaging in a
    reverse-payment settlement. And in Lipitor the plaintiffs could
    also prevail on the additional non-patent law theory that Pfizer
    filed a sham citizen petition with the FDA. See DDAVP, 
    585 F.3d at 686
     (“[W]hether [a FDA] petition was a sham is an
    issue independent of patent law.”); see also Apotex Inc. v.
    Acorda Therapeutics, Inc., 
    823 F.3d 51
    , 59 (2d Cir. 2016).
    Actavis teaches that reverse-payment antitrust claims do
    not present a question of patent law. See 133 S. Ct. at 2236-37
    (“[T]he size of the unexplained reverse payment can provide a
    workable surrogate for a patent’s weakness, all without forcing
    a court to conduct a detailed exploration of the validity of the
    patent itself.”). The Court did acknowledge, however, that
    questions of patent validity may still arise from time to time.
    See id. at 2236 (“[I]t is normally not necessary to litigate patent
    validity to answer the antitrust question (unless, perhaps, to
    determine whether the patent litigation is a sham).”). But even
    where patent-law questions are presented, it does not follow
    40
    that patent law is necessary for relief on every theory of
    liability supporting an antitrust claim. In the present appeals,
    “[s]ince there are reasons completely unrelated to the
    provisions and purposes of federal patent law why [plaintiffs]
    may or may not be entitled to the relief they seek under their
    monopolization claim, the claim does not ‘arise under’ federal
    patent law.” Christianson, 486 U.S. at 812 (brackets, citation,
    and some internal quotation marks omitted).                These
    considerations lead us to conclude that the presence of non-
    patent-law theories of liability supporting the Lipitor and
    Effexor plaintiffs’ monopolization claims vests jurisdiction
    over their appeals in this Court, not the Federal Circuit.
    C
    Defendants do not quarrel with any of the principles that
    guide our analysis. They instead assert that plaintiffs’ reverse-
    payment settlement allegations constitute monopolization
    claims separate and apart from the Walker Process fraud, sham
    litigation, and false Orange Book listing theories. The
    allegations of fraudulent procurement and enforcement of the
    Lipitor and Effexor patents, in defendants’ view, involve
    distinct anticompetitive conduct that occurred years before the
    reverse-payment settlements (and, in Lipitor, the sham FDA
    citizen petition).
    We reject this divide-and-conquer approach to “arising
    under” jurisdiction. Defendants in effect ask that we rewrite
    plaintiffs’ complaints, which plead patent-law related theories
    as aspects of an overall monopolistic scheme.                A
    monopolization claim under section 2 of the Sherman Act has
    two elements: (1) the possession of monopoly power in the
    relevant market and (2) the willful acquisition or maintenance
    of that power. LePage’s Inc. v. 3M, 
    324 F.2d 141
    , 146 (3d Cir.
    2003) (en banc) (citing United States v. Grinnell Corp., 384
    
    41 U.S. 563
    , 570-71 (1966)). But to be condemned as
    exclusionary, a monopolist’s anticompetitive conduct must
    have an anticompetitive effect. “The relevant inquiry,” we
    have held, “is the anticompetitive effect of [a defendant’s]
    exclusionary practices considered together.” Id. at 162. Thus,
    “courts must look to the monopolist’s conduct taken as a whole
    rather than considering each aspect in isolation.” Id. (citing
    Cont’l Ore Co. v. Union Carbide & Carbon Corp., 
    370 U.S. 690
    , 699 (1962)); see 
    id.
     (“[I]t would not be proper to focus on
    specific individual acts of an accused monopolist while
    refusing to consider their overall combined effect . . . . We are
    dealing with what has been called the ‘synergistic effect’ of the
    mixture of the elements.” (alterations in original) (internal
    quotation marks omitted)).
    Defendants contend that the patent-law theories of
    monopolization liability in plaintiffs’ complaints are distinct
    “claims.” But that runs headlong into traditional antitrust
    principles. Plaintiffs’ monopolization claims encompass the
    totality of the allegedly anticompetitive conduct—from
    defendants’ fraudulent procurement and enforcement of their
    patents on through to the reverse-payment settlements. We
    will not permit the defendants to commandeer these
    complaints, of which plaintiffs are master.
    Nor do we accept the argument that certain statements
    made by the Effexor plaintiffs in the District Court somehow
    estop them from arguing that the patent-law allegations
    constitute theories of relief. Principles of estoppel cannot
    confer jurisdiction where it otherwise does not exist. See Ins.
    Corp. of Ireland, Ltd. v. Compagnie des Bauxites de Guinee,
    
    456 U.S. 694
    , 702 (1982); Semper v. Gomez, 
    747 F.3d 229
    , 247
    (3d Cir. 2014). And in any event, our jurisdictional inquiry is
    confined solely to the plaintiffs’ well-pleaded complaints, not
    42
    subsequent events. See Christianson, 486 U.S. at 814 (“Since
    the district court’s jurisdiction is determined by reference to
    the well-pleaded complaint, not the well-tried case, the referent
    for the Federal Circuit’s jurisdiction must be the same.”).
    D
    Our jurisdictional holding is consistent, we think, with
    two of the Second Circuit’s pre-Actavis reverse-payment cases.
    In one case, the court transferred an appeal to the Federal
    Circuit and retained jurisdiction over others. The Second
    Circuit explained: “The indirect purchaser plaintiffs amended
    their complaint to add state-law, Walker Process antitrust
    claims . . . . Because the Walker Process claims are preempted
    by patent law, we transferred the indirect purchaser plaintiffs’
    appeal to the Federal Circuit, while retaining jurisdiction over
    the direct purchaser plaintiffs’ appeals.” Arkansas Carpenters
    Health & Welfare v. Bayer AG, 
    604 F.3d 98
    , 103 n.10 (2d Cir.
    2010); see In re Ciprofloxacin Hydrochloride Antitrust Litig.,
    
    2007 U.S. App. LEXIS 30732
    , at *1 (2d Cir. Nov. 7, 2007)
    (order transferring indirect purchaser plaintiffs’ appeal to the
    Federal Circuit). The Second Circuit and the Federal Circuit
    therefore each independently assessed the lawfulness of the
    same reverse-payment settlement. See Arkansas Carpenters,
    
    604 F.3d at
    103 & n.10; Ciprofloxacin, 
    544 F.3d at 1333
    . But
    unlike the Lipitor and Effexor appeals before us, the appeal
    transferred from the Second Circuit to the Federal Circuit
    involved stand-alone Walker Process claims. See In re
    Ciprofloxacin Hydrochloride Antitrust Litig., 
    363 F. Supp. 2d 514
    , 544 (E.D.N.Y. 2005) (“[I]ndirect plaintiffs’ Count V
    [raising state-law Walker Process claims] not only arises out
    of patent law, but rests entirely on patent law” (emphasis
    added)), aff’d, 
    544 F.3d 1232
     (Fed. Cir. 2008), and aff’d sub
    nom. Arkansas Carpenters, 
    604 F.3d 98
    .
    43
    And in DDAVP, 
    585 F.3d 677
    , the Second Circuit
    retained jurisdiction over a reverse-payment case. The
    DDAVP plaintiffs alleged four theories of liability in a
    Sherman Act monopolization claim against a branded drug
    manufacturer based upon theories nearly identical to those the
    Lipitor and Effexor plaintiffs bring against Pfizer and Wyeth:
    Walker Process fraud, sham Orange Book listing, sham
    litigation against generic competitors, and a sham FDA citizen
    petition. 
    Id. at 685
    . The Second Circuit acknowledged that,
    while the plaintiffs’ first three theories turned on substantial
    questions of patent law, the fourth theory—the filing of a sham
    FDA citizen petition—did not. 
    Id. at 685-86
    . Because the
    citizen-petition theory did not raise any question of patent law,
    the court exercised jurisdiction over the entirety of the
    plaintiffs’ monopolization claim. 
    Id. at 686
    .
    A final, prudential consideration tips in favor of our
    Court exercising jurisdiction over these appeals. Under the
    Federal Circuit’s choice-of-law rules, it would apply Third
    Circuit antitrust jurisprudence—including our recent decision
    in King Drug, 
    791 F.3d 388
    —when reviewing whether
    plaintiffs’ complaints state plausible claims for relief under
    Actavis. See Nobelpharma, 
    141 F.3d at 1059
     (Federal Circuit
    “appl[ies] the law of the appropriate regional circuit to issues
    involving other elements of antitrust law such as relevant
    market, market power, damages, etc., as those issues are not
    unique to patent law”). Now that the Supreme Court has
    confirmed that it is usually unnecessary to litigate these patent-
    law issues to determine antitrust liability, the development of
    post-Actavis jurisprudence is, in the ordinary case, left to the
    regional Courts of Appeals.
    Christianson establishes that not all cases involving
    patent law fall within the Federal Circuit’s jurisdiction.
    44
    Congress has left a role for our Court to play in adjudicating
    patent-law issues over which we possess jurisdiction. Our
    holding requires us to fulfill that role in these appeals.
    V
    The appeal of the RP Healthcare plaintiffs requires a
    separate jurisdictional inquiry. That case was filed by a group
    of California pharmacists in the Superior Court of California,
    Sonoma County, but Pfizer removed it to federal district court,
    citing federal-question jurisdiction under 
    28 U.S.C. § 1331
     and
    patent-law jurisdiction under § 1338(a). RP Healthcare J.A.
    26-27; see 
    28 U.S.C. § 1441
    (a). In denying the RP Healthcare
    plaintiffs’ remand motion, the District Court reasoned that
    “there may be patent issues raised as defenses in this case
    which would engender jurisdiction.” Lipitor J.A. 2. We
    disagree. “Under the well-pleaded complaint rule . . . whether
    a claim ‘arises under’ patent law ‘must be determined from
    what necessarily appears in the plaintiff’s statement of his own
    claim in the bill or declaration, unaided by anything alleged in
    anticipation or avoidance of defenses which it is thought the
    defendant may interpose.’” Christianson, 486 U.S. at 809
    (quoting Franchise Tax Bd., 
    463 U.S. at 8
    ); see Louisville &
    Nashville R.R. Co. v. Mottley, 
    211 U.S. 149
     (1914); N.J.
    Carpenters v. Tishman Constr. Corp. of N.J., 
    760 F.3d 297
    ,
    302 (3d Cir. 2014) (“The existence or expectation of a federal
    defense is insufficient to confer federal jurisdiction.”).
    Pfizer and Ranbaxy nevertheless argue that the RP
    Healthcare case belongs in federal court because it “arises
    under” patent law pursuant to § 1338(a). They also say the
    District Court possessed diversity jurisdiction before final
    judgment entered as a result of the RP Healthcare plaintiffs’
    voluntary dismissal of the only two non-diverse defendants.
    We reject the first argument but find the record insufficient to
    45
    decide the second.
    A
    The RP Healthcare plaintiffs do not challenge the
    Pfizer-Ranbaxy settlement as an unlawful reverse payment.
    Rather, they allege that the settlement constitutes a per se
    unlawful market allocation agreement in violation of
    California’s Cartwright Act. Two years after Actavis, the
    California Supreme Court held that reverse-payment
    settlements can be challenged under that Act and are to be
    analyzed under a structured rule-of-reason. In re Cipro Cases
    I & II, 
    348 P.3d 845
     (Cal. 2015). But the California court has
    yet to recognize the kind of per se market allocation claim
    proposed by the RP Healthcare plaintiffs.
    To the extent their claim exists under California law (a
    question we do not decide), as pled by the RP Healthcare
    plaintiffs that claim would not “arise under” federal patent law.
    Pfizer and Ranbaxy latch onto a single sentence in the RP
    Healthcare plaintiffs’ state court complaint making an express
    allegation of Walker Process fraud. See RP Healthcare Pls.’
    Compl. ¶ 114, RP Healthcare J.A. 57 (“The Agreement
    between Defendants extending the length of the Lipitor patents
    constitutes fraudulent procurement and enforcement of a patent
    . . . .” (citing Walker Process, 
    382 U.S. 172
    )). But like the
    complaints of the Lipitor and Effexor plaintiffs discussed
    above, we conclude that there are alternative non-patent-law
    theories through which the RP Healthcare plaintiffs could
    prevail on their state-law antitrust claim. See Christianson,
    486 U.S. at 809-10. The RP Healthcare plaintiffs’ complaint
    includes theories of liability other than Walker Process fraud.
    See id. ¶ 105, RP Healthcare J.A. 56 (“The Agreements
    between the Defendants, which artificially extended the length
    of the Lipitor-related patents, allocated markets between them,
    46
    artificially postponed price reductions, and restrained trade in
    the provision of Lipitor and its generic alternatives, are a
    violation of the Cartwright Act . . . .” (emphasis added)). Thus,
    the RP Healthcare plaintiffs could obtain relief on the market
    allocation claim all without addressing the validity of Pfizer’s
    Lipitor patents. The oblique mention of Walker Process fraud
    in their complaint does not land this case in the “special and
    small category” of state-law claims “in which arising under
    jurisdiction still lies.” Gunn, 133 S. Ct. at 1064 (internal
    quotation marks omitted).
    B
    While the District Court did not possess jurisdiction
    over the RP Healthcare case under § 1338(a), the possibility
    exists that the court had diversity jurisdiction by the time it
    entered final judgment. Article III of the Constitution provides
    that “[t]he judicial Power [of the United States] shall extend . .
    . to Controversies . . . between Citizens of different States; . . .
    and between a State, or the Citizens thereof, and foreign States,
    Citizens or Subjects.” Beginning with the Judiciary Act of
    1789, ch. 20, § 11, 
    1 Stat. 78
    , Congress has authorized the
    federal courts to exercise jurisdiction based on the parties’
    diversity of citizenship. In its current form, the diversity
    statute vests in the federal district courts original jurisdiction
    of “all civil actions where the matter in controversy exceeds
    the sum or value of $75,000, . . . and is between . . . citizens of
    different States and in which citizens or subjects of a foreign
    state are additional parties.” 
    28 U.S.C. § 1132
    (a)(3). Since
    Strawbridge v. Curtis, 7 U.S. (3 Cranch) 267 (1806), the
    Supreme Court has interpreted the diversity statute to require
    “complete diversity” of citizenship: “[i]n a case with multiple
    plaintiffs and multiple defendants, the presence in the action of
    a single plaintiff from the same State as a single defendant
    47
    deprives the district court of original diversity jurisdiction over
    the entire action,” Exxon Mobil Corp. v. Allahpattah Servs.,
    Inc., 
    545 U.S. 546
    , 553 (2005).
    Though “[i]t had long been the case that ‘the jurisdiction
    of the court depends upon the state of things at the time of the
    action brought,’” Grupo Dataflux v. Atlas Global Grp., L.P.,
    
    541 U.S. 567
    , 570 (2004) (quoting Mollan v. Torrance, 22 U.S.
    (9 Wheat.) 537, 539 (1824)), this time-of-filing rule is subject
    to a few discrete exceptions. One such “method of curing a
    jurisdictional defect [that has] long been an exception to the
    time-of-filing rule” is when a jurisdictional defect is “cured by
    the dismissal of the party that had destroyed diversity.” 
    Id. at 572
    . As the Supreme Court recognized in Caterpillar Inc. v.
    Lewis, “a district court’s error in failing to remand a case
    improperly removed is not fatal to the ensuing adjudication if
    federal jurisdictional requirements are met at the time
    judgment is entered.” 
    529 U.S. 61
    , 64 (1996).
    Pfizer and Ranbaxy urge us to apply that exception here.
    After all, the RP Healthcare plaintiffs voluntarily dismissed
    the only two non-diverse defendants prior to entry of final
    judgment. Before this Court, however, the parties expressed
    uncertainty regarding the state of the record as it pertains to the
    citizenship of two parties—defendants Pfizer Ireland
    Pharmaceuticals and Warner-Lambert Co., LLC, both
    unincorporated entities and wholly owned subsidiaries of
    Pfizer. See Lipitor Tr. of Oral Arg. 23-24, 44-47; RP
    Healthcare Pls.’ Reply Br. 17-18. Like all unincorporated
    entities, partnerships and limited liability companies (LLCs)
    bear the citizenship of each of their members. See Americold
    Realty Trust v. ConAgra Foods, Inc., 
    136 S. Ct. 1012
    , 1016-17
    (2016); Carden v. Arcoma Assocs., 
    494 U.S. 185
    , 195-96
    (1990); Zambelli Fireworks Mfg. Co. v. Wood, 
    592 F.3d 412
    ,
    48
    420 (3d Cir. 2010).
    As the parties asserting diversity jurisdiction, Pfizer and
    Ranbaxy bear the burden of proving diversity of citizenship by
    a preponderance of the evidence. See Freidrich v. Davis, 
    767 F.3d 374
    , 377 (3d Cir. 2014). Since this case was removed to
    federal court, diversity must have existed both at the time the
    RP Healthcare plaintiffs’ state court complaint was filed and
    at the time of removal. See Pullman Co. v. Jenkins, 
    305 U.S. 534
    , 537 (1939); Johnson v. SmithKline Beecham Corp., 
    724 F.3d 337
    , 346 (3d Cir. 2013). But no changes in citizenship
    after the time of filing (and, as relevant here, the time of
    removal) can create or destroy diversity. See Grupo Dataflux,
    
    541 U.S. at 574-75
    ; Conolly v. Taylor, 27 U.S. (2 Pet.) 556,
    565 (1829).
    In calling for diversity jurisdiction Pfizer and Ranbaxy
    made no effort before this Court or the District Court to
    demonstrate that complete diversity was in fact present before
    final judgment.       That is especially puzzling, since an
    unincorporated association “is in the best position to ascertain
    its own membership,” Lincoln Benefit Life Co. v. AEI Life,
    LLC, 
    800 F.3d 99
    , 108 (3d Cir. 2015), and the entities in
    question are Pfizer subsidiaries. While we have previously
    observed that, “where the unincorporated association is the
    proponent of diversity jurisdiction, there is no reason to excuse
    it of its obligation to plead the citizenship of each of its
    members,” 
    id.
     at 108 n.36, that statement was made in the
    context of an unincorporated association asserting diversity as
    a plaintiff. It does not address the situation in this case, where
    the removing parties are asserting diversity as a result of the
    plaintiffs’ own voluntary post-removal actions. We therefore
    consider it premature to direct that the RP Healthcare case be
    sent back to California state court. Rather, we will remand the
    49
    matter to the District Court to give the parties the opportunity
    to clarify the record with regard to diversity of citizenship. The
    District Court should also ensure that the amount in
    controversy alleged in the RP Healthcare plaintiffs’ state-court
    complaint exceeds $75,000. See 
    28 U.S.C. § 1332
    (a); Angus
    v. Shiley, 
    989 F.2d 142
    , 145-46 (3d Cir. 1993).
    Our remand applies as well to the Daiichi Sankyo
    defendants. Before the District Court, they moved to dismiss
    the RP Healthcare plaintiffs’ complaint on three grounds: lack
    of Article III standing, lack of personal jurisdiction, and failure
    to state a claim upon which relief can be granted. The District
    Court dismissed the Daiichi Sankyo defendants under Rule
    12(b)(6) for failure to state a plausible claim. Lipitor J.A. 65,
    3543-44. But “a federal court generally may not rule on the
    merits of a case without first determining that it has jurisdiction
    over the category of claim in suit (subject-matter jurisdiction)
    and the parties (personal jurisdiction).” Sinochem Int’l Co. v.
    Malaysia Int’l Shipping Corp., 
    549 U.S. 422
    , 430-31 (2007);
    see Steel Co. v. Citizens for Better Environment, 
    523 U.S. 83
    ,
    93-102 (1998). The District Court should have resolved the
    standing and personal jurisdictional arguments before
    dismissing Daiichi Sankyo on the merits. In the event that the
    District Court concludes on remand that the parties were
    completely diverse at the time of judgment, it should address
    those arguments to determine whether it had the power to reach
    the merits of the RP Healthcare plaintiffs’ claim against
    Daiichi Sankyo.
    It is a common practice among the Courts of Appeals to
    retain jurisdiction over an appeal while making a limited
    remand for additional findings or explanations.           Basic
    illustrations include a “controlled remand to determine whether
    there is federal subject-matter jurisdiction,” as well as
    50
    “remands to determine justiciability or personal jurisdiction.”
    16 Charles Alan Wright, Arthur R. Miller, & Edward H.
    Cooper, Federal Practice & Procedure § 3937.1, pp. 847-48
    (3d ed. 2012) (footnote omitted); see, e.g., Friery v. Los
    Angeles Unified Sch. Dist., 
    448 F.3d 1146
    , 1150 (9th Cir.
    2006) (limited remand for Article III standing determination);
    Fort Knox Music Inc. v. Baptiste, 
    203 F.3d 193
    , 197 (2d Cir.
    2000) (limited remand for personal jurisdiction determination);
    Jason’s Foods, Inc. v. Peter Eckrich & Sons, Inc., 
    768 F.2d 189
    , 190-91 (7th Cir. 1985) (limited remand for diversity-of-
    citizenship determination). We will follow that practice and
    retain jurisdiction over the RP Healthcare plaintiffs’ appeal. It
    is expected that the District Court and the parties will move
    expeditiously on remand to resolve the diversity-of-citizenship
    issue and, if necessary, jurisdiction over the Daiichi Sankyo
    defendants.
    VI
    For the reasons stated, we conclude that, with a single
    exception, we have jurisdiction to reach the merits of these
    appeals. In one of the Lipitor appeals, RP Healthcare, Inc. v.
    Pfizer, Inc., No. 14-4632, because it is unclear whether the
    District Court had jurisdiction at the time judgment was
    entered, we will order a limited remand for the parties to clarify
    the record in this regard. Any further proceedings in these
    appeals will be heard by this panel.
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Document Info

Docket Number: 14-4202, 14-4203, 14-4204, 14-4205, 14-4206, 14-4602 & 14-4632; 15-1184, 15-1185, 15-1186, 15-1187, 15-1274, 15-1323 & 15-1342

Citation Numbers: 855 F.3d 126, 2017 WL 1359474

Judges: Ambro, Smith, Fisher

Filed Date: 4/13/2017

Precedential Status: Precedential

Modified Date: 11/5/2024

Authorities (35)

ClearPlay, Inc. v. Abecassis , 602 F.3d 1364 ( 2010 )

mylan-pharmaceuticals-incorporated-v-united-states-food-and-drug , 454 F.3d 270 ( 2006 )

Heike v. United States , 30 S. Ct. 539 ( 1910 )

Caterpillar Inc. v. Lewis , 117 S. Ct. 467 ( 1996 )

Grupo Dataflux v. Atlas Global Group, L. P. , 124 S. Ct. 1920 ( 2004 )

In Re Ciprofloxacin Hydrochloride Antitrust Litigation , 363 F. Supp. 2d 514 ( 2005 )

No. 01-56016 , 448 F.3d 1146 ( 2006 )

Federal Trade Commission v. Watson Pharmaceuticals, Inc. , 677 F.3d 1298 ( 2012 )

Arkansas Carpenters Health & Welfare Fund v. Bayer AG , 604 F.3d 98 ( 2010 )

United States v. Ruiz , 122 S. Ct. 2450 ( 2002 )

In Re Ciprofloxacin Hydrochloride Antitrust Lit. , 544 F.3d 1323 ( 2008 )

Exxon Mobil Corp. v. Allapattah Services, Inc. , 125 S. Ct. 2611 ( 2005 )

Sinochem International Co. v. Malaysia International ... , 127 S. Ct. 1184 ( 2007 )

Gunn v. Minton , 133 S. Ct. 1059 ( 2013 )

Jason's Foods, Inc., an Illinois Corporation v. Peter ... , 768 F.2d 189 ( 1985 )

In Re DDAVP Direct Purchaser Antitrust Litigation , 585 F.3d 677 ( 2009 )

Sanofi-Aventis v. Apotex Inc. , 659 F.3d 1171 ( 2011 )

Zambelli Fireworks Manufacturing Co. v. Wood , 592 F.3d 412 ( 2010 )

Kokkonen v. Guardian Life Insurance Co. of America , 114 S. Ct. 1673 ( 1994 )

Steel Co. v. Citizens for a Better Environment , 118 S. Ct. 1003 ( 1998 )

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