Golden v. United States ( 2020 )


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  • Case: 19-2134    Document: 37     Page: 1   Filed: 04/10/2020
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    LARRY GOLDEN,
    Plaintiff-Appellant
    v.
    UNITED STATES,
    Defendant-Appellee
    ______________________
    2019-2134
    ______________________
    Appeal from the United States Court of Federal Claims
    in No. 1:19-cv-00104-EGB, Senior Judge Eric G. Bruggink.
    ______________________
    Decided: April 10, 2020
    ______________________
    LARRY GOLDEN, Greenville, SC, pro se.
    DAVID ALLEN FOLEY, JR., Commercial Litigation
    Branch, Civil Division, United States Department of Jus-
    tice, Washington, DC, for defendant-appellee. Also repre-
    sented by JOSEPH H. HUNT, GARY LEE HAUSKEN.
    ______________________
    Before O’MALLEY, MAYER, and WALLACH, Circuit Judges.
    O’MALLEY, Circuit Judge.
    Larry Golden (“Golden”) appeals an order of the United
    States Court of Federal Claims (“Claims Court”)
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    2                                  GOLDEN v. UNITED STATES
    dismissing his claims against the United States (“govern-
    ment”) pursuant to Rules 12(b)(1) and 12(b)(6) of the Rules
    of the Claims Court (“RCFC”). The Claims Court held that
    Golden’s complaint alleges a duplicative claim over which
    the court lacked jurisdiction, and his complaint fails to
    state a claim upon which relief can be granted. Golden v.
    United States, No. 19-cv-00104 (Fed. Cl. May 14, 2019),
    ECF No. 12 (“Claims Court Op.”). For the reasons ex-
    plained below, we affirm.
    BACKGROUND
    Golden, proceeding pro se, filed this suit pursuant to
    
    28 U.S.C. § 1491
    (a) on January 17, 2019, seeking “reason-
    able and entire compensation for the unlicensed use and
    manufacture” of his “inventions described in and covered
    by” various patents. Golden v. United States, No. 19-104C
    (Fed. Cl. May 14, 2019), ECF No. 1; SAppx1012. 1 Relevant
    to this appeal are certain other proceedings involving some
    or all of the patents that were the subject of Golden’s com-
    plaint in this case: Golden v. United States, No. 13-307C
    (Fed. Cl. May 1, 2013) (“Lead Case”) and U.S. Dep’t of
    Homeland Security v. Golden, No. IPR 2014-00714 (“the
    IPR”). Resolution of this appeal does not require a detailed
    recitation of the factual background of the Lead Case or the
    1   Golden filed an “Informal Brief Appendix” on Sep-
    tember 3, 2019, using the prefix “Appx.” Golden also filed
    an additional appendix with his reply brief on November 7,
    2019. This Reply Appendix also uses the prefix “Appx,” and
    restarts the numbering at Appx1. The government, for its
    part, filed a Supplemental Appendix, using the same
    “Appx” prefix as Golden’s two appendices, but beginning
    the numbering at Appx1000. We cite to the government’s
    Supplemental Appendix as “SAppx,” Golden’s “Informal
    Brief Appendix” as “Appx,” and Golden’s Reply Appendix
    as “RAppx.”
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    GOLDEN v. UNITED STATES                                   3
    IPR. Accordingly, only the facts relevant to this appeal are
    discussed below.
    A. Lead Case
    On May 1, 2013, Golden filed the complaint in the Lead
    Case, alleging patent infringement by the government pur-
    suant to 
    28 U.S.C. § 1498
    (a). The trial court allowed
    Golden to amend his complaint five times, and, with each
    amendment, Golden added claims of infringement of addi-
    tional patents. Starting with the second amended com-
    plaint, Golden also included allegations of “Government
    Taking,” alleging that the government had “taken the sub-
    ject matter, scope, technology rationale, devices schemat-
    ics, processes, methods, procedures and systems of what is
    now Golden’s patents . . . for public use without just com-
    pensation.” SAppx1791–93. Golden alleged that the
    Claims Court had jurisdiction over his takings claims un-
    der 
    28 U.S.C. § 1491
    . SAppx1791. Noting that the takings
    claims appeared to be duplicative of the patent infringe-
    ment claims, the trial court initially stayed Golden’s tak-
    ings claims, “pending determination of liability for the
    Government’s alleged patent infringement.” SAppx1794
    (citing Zoltek Corp. v. United States, 
    672 F.3d 1309
     (Fed.
    Cir. 2012) (en banc)).
    On August 10, 2017, Golden filed his fifth and final
    amended complaint in the Lead Case. SAppx2040. This
    voluminous filing included a general “Count I,” alleging
    “Fifth Amendment Takings” of nine of Golden’s patents.
    SAppx2065–67. 2 It also included additional specific “Count
    Is,” which recite takings allegations tailored to the use of
    specific electronic devices. See, e.g., SAppx2069–70 (LG
    2   Specifically, Golden alleged taking of the “subject
    matter as outlined in” his U.S. Patent Nos. 7,385,497;
    7,636,033; 8,106,752; 8,334,761; 8,531,280; RE43,891;
    RE43,990; 9,096,189; and 9,589,439. SAppx2065.
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    4                                   GOLDEN v. UNITED STATES
    Electronics G5 Smartphone), SAppx2071–73 (LG Electron-
    ics V10 Smartphone), SAppx2074–75 (Apple’s iPhone/iPad
    Camera Biosensor for Facial Heart Rate Monitor). The
    complaint similarly included corresponding “Count IIs”—
    patent infringement claims under 
    28 U.S.C. § 1498
     refer-
    encing the same electronic devices. See, e.g., SAppx2067–
    69; SAppx2070–71; SAppx2073–74; SAppx2075–76. 3
    On March 29, 2018, the Claims Court issued a memo-
    randum opinion and order, granting-in-part the govern-
    ment’s motion for partial dismissal of the Lead Case and
    denying Golden’s motion for leave to file a motion for sum-
    mary judgment. Golden v. United States, 
    137 Fed. Cl. 155
    ,
    159 (2018) (dismissing certain patent infringement
    claims). Golden appealed the partial dismissal opinion to
    this court. SAppx2301. We dismissed the appeal as prem-
    ature because the Claims Court had not yet issued a final
    decision or judgment in the Lead Case. Order, Golden v.
    United States, No. 2018-1942 (Fed. Cir. Aug. 1, 2018); Or-
    der, Golden v. United States, No. 2018-1942 (Fed. Cir. May
    31, 2018).
    In November 2018, the Claims Court lifted the stay on
    Golden’s takings claims in the Lead Case, “[t]o pursue effi-
    cient resolution of all claims in th[e] case[.]” SAppx2303–4.
    The court permitted the government to file a motion to dis-
    miss those claims. SAppx2304. On May 8, 2019, the trial
    court granted the government’s motion and dismissed
    Golden’s takings claims. Golden v. United States, No.
    13-307C, 
    2019 WL 2056662
    , at *3 (Fed. Cl. May 8, 2019).
    3   Golden’s generic patent infringement “Count II”
    referenced the same nine patents as his takings claims, as
    well   as    his   Continuation     Patent    Application
    No. 15/530,839, which later issued as 
    U.S. Patent No. 10,163,287
    . SAppx2067–69.
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    GOLDEN v. UNITED STATES                                    5
    Certain patent infringement allegations from the Lead
    Case have not yet been resolved, however. SAppx2303.
    The case is stayed pending resolution of Golden’s petition
    in an inter partes review proceeding affecting one of the pa-
    tents at issue in the Lead Case. SAppx2339–40. The
    court’s rulings on the takings claims in the Lead Case are,
    accordingly, not yet ripe for appeal to this court.
    B. Inter Partes Review of
    U.S. Patent No. RE43,990
    On April 30, 2014, the Department of Homeland Secu-
    rity (“DHS”) petitioned the Patent Trial and Appeal Board
    (“Board”) for inter partes review of claims 11, 74, and 81 of
    Golden’s U.S. Patent No. RE43,900. The Board instituted
    review on October 8, 2014. During this proceeding, Golden
    filed, pro se, a Patent Owner Response and Motion to
    Amend. The Board held a conference call with the parties
    following this filing, and informed Golden that it was un-
    clear whether his Motion to Amend was contingent on the
    Board finding the challenged claims unpatentable.
    SAppx2434–36. The Board informed Golden that, if his
    Motion to Amend was non-contingent, he was “in essence,
    abandoning the claims at issue, and saying that we should
    only look at the claims as amended in the Motion to
    Amend.” SAppx2436. The Board also “urge[d]” Golden “to
    retain new counsel because of the possible consequences of
    this proceeding, as well as its very technical nature.”
    SAppx2437. In response, Golden again filed his Patent
    Owner Response, as well as two separate Motions to
    Amend, which the Board treated “in the collective as a sin-
    gle motion to amend.” SAppx2512.
    On February 3, 2015, the Board held another telecon-
    ference, and confirmed with Golden that his Motion to
    Amend was, indeed, non-contingent. According to the
    Board, Golden confirmed “that he is abandoning the claims
    on which trial was instituted.” SAppx2512. The Board is-
    sued its final written decision on October 1, 2015. It
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    6                                  GOLDEN v. UNITED STATES
    granted Golden’s non-contingent request to cancel the orig-
    inal claims. It also found that Golden had failed to demon-
    strate by a preponderance of the evidence that his proposed
    substitute claims were patentable over the prior art.
    SAppx2547.
    Golden did not appeal the Board’s final written deci-
    sion, but is currently petitioning the Patent and Trade-
    mark Office (“PTO”) (through counsel) to strike the Inter
    Partes Review Certificate as an ultra vires agency action.
    In that petition, Golden argues that, under the Supreme
    Court’s recent decision in Return Mail, Inc. v. U.S. Postal
    Serv., 
    139 S. Ct. 1853
     (2019), a government agency may not
    petition for IPR. SAppx2600–02.
    C. The Present Case
    Golden filed the present case in January 2019, shortly
    before the Claims Court granted the government’s motion
    to dismiss the takings claims in the Lead Case. In this ac-
    tion, Golden again seeks compensation for the govern-
    ment’s Fifth Amendment Taking of his property, i.e.,
    several of his U.S. patents, which were also at issue in the
    Lead Case. Golden v. United States, No. 19-104C (Fed. Cl.
    May 14, 2019), ECF No. 1; SAppx1012. In this complaint,
    Golden alleges takings of the subject matter of his patents
    based on actions by different entities, including the Board,
    the Department of Justice, DHS, the Claims Court, and our
    court. SAppx1011–12. The complaint alleges the takings
    occurred by virtue of: (1) the government’s use, manufac-
    ture, development, and disclosure of the subject matter
    “outlined” in the claims and specifications of Golden’s pa-
    tents; (2) the cancellation of certain patent claims during
    the IPR initiated by the government; and, (3) certain ac-
    tions by the Claims Court and the Federal Circuit in the
    Lead Case. On January 29, 2019, the trial court deter-
    mined that Golden’s complaint raises identical questions of
    law and fact as the Lead Case and consolidated the cases.
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    GOLDEN v. UNITED STATES                                   7
    On May 14, 2019, upon the government’s motion pur-
    suant to RCFC 12(b)(1) and 12(b)(6), the Claims Court dis-
    missed Golden’s complaint in the present case as largely
    duplicative of the takings claims in the Lead Case, which
    the court had recently dismissed. Claims Court Op. at 1.
    The court held that, even if the complaint was not duplica-
    tive of the Lead Case, the Claims Court did not have juris-
    diction over the takings claims because Golden cannot
    label his patent infringement claim as a “taking” in order
    to proceed under the court’s Tucker Act jurisdiction. Ac-
    cording to the trial court, patent infringement claims
    against the government are to be pursued exclusively un-
    der § 1498, and “‘patent rights are not cognizable property
    interests for Takings Clause purposes.’” Id. at 3–4 (citing
    Zoltek v. United States, 
    442 F.3d 1345
     (Fed. Cir. 2006)
    (“Zoltek I”), vacated on other grounds on reh’g en banc,
    
    672 F.3d 1309
     (Fed. Cir. 2012) (“Zoltek II”) and quoting
    Christy, Inc. v. United States, 
    141 Fed. Cl. 641
    , 657–60
    (2019)).
    As to Golden’s IPR-based takings claims, the trial court
    found that patent rights are not private property for pur-
    poses of a Fifth Amendment takings claim. The court then
    concluded, “setting aside whether an action by the Board
    could ever constitute a government taking,” the cancella-
    tion of claims in the IPR was the result of Golden’s volun-
    tary amendment of his claims. 
    Id. at 4
    . Finally, as to
    Golden’s grievances against the Claims Court and this
    court, the trial court explained that the courts adjudicate
    patent rights, and, “in any event, as Mr. Golden himself
    notes, both courts have allowed his patent claims to con-
    tinue in the [Lead Case].” 
    Id.
     Golden timely appeals. We
    have jurisdiction pursuant to 
    28 U.S.C. § 1295
    (a)(3).
    DISCUSSION
    Whether the Claims Court properly granted the gov-
    ernment’s motion to dismiss is a question of law. Rocovich
    v. United States, 
    933 F.2d 991
    , 993 (Fed. Cir. 1991). This
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    8                                   GOLDEN v. UNITED STATES
    court reviews a question of law de novo and reverses the
    Claims Court’s legal conclusion only if it is incorrect as a
    matter of law. See Placeway Constr. Corp. v. United States,
    
    920 F.2d 903
    , 906 (Fed. Cir. 1990).
    On appeal, Golden argues that the trial court improp-
    erly dismissed his takings claims based on: (1) the govern-
    ment’s infringement of his patents; (2) the institution of the
    IPR; and (3) the Claims Court’s dismissal of his causes of
    action relating to patent claims that were “unjustly can-
    celled in the IPR.” Appellant’s Br. 5, 13. He also argues
    that there were “several breaches of implied-in-fact con-
    tracts” by the government. Id. at 5. We address each ar-
    gument in turn.
    A.
    We first consider the dismissal of Golden’s patent in-
    fringement-based takings claims. The Claims Court held
    that it did not have jurisdiction over these claims pursuant
    to 
    28 U.S.C. § 1491
    , because patent infringement claims
    against the government are to be pursued exclusively un-
    der 
    28 U.S.C. § 1498
    . Claims Court Op. at 3–4 (citing
    Zoltek I, 
    442 F.3d at
    1350–53). We agree.
    The Claims Court has limited jurisdiction to entertain
    suits against the United States. The Tucker Act is the
    principal statute governing the jurisdiction of the Claims
    Court. It waives sovereign immunity for claims against the
    United States that are founded upon the Constitution, a
    federal statute or regulation, or an express or implied con-
    tract with the United States. 
    28 U.S.C. § 1491
    . Section
    1491 carves out an important exception: it does not waive
    sovereign immunity for claims sounding in tort. 
    Id.
     As
    relevant to this case, another statute, 
    28 U.S.C. § 1498
    (a)
    permits suits against the United States for its unauthor-
    ized use of a patented invention. Under this statute, a pa-
    tent owner may “recover[] . . . his reasonable and entire
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    GOLDEN v. UNITED STATES                                    9
    compensation for such use and manufacture.” 
    28 U.S.C. § 1498
    (a).
    In support of its conclusion that § 1498 provides the
    sole avenue for pursuing a claim of patent infringement
    against the United States, the Claims Court relied on our
    decision in Zoltek I. There, we affirmed the Claims Court’s
    decision that patent owner Zoltek’s § 1498(a) infringement
    claims against the government were barred because every
    step of the claimed method was not performed in the
    United States. And, relying on the Supreme Court’s deci-
    sion in Schillinger v. United States, 
    155 U.S. 163
     (1894), we
    held that Zoltek was not permitted to proceed under the
    Tucker Act by alleging that the infringement was a taking.
    Zoltek I, 
    442 F.3d at 1350
    . As the subsequent history of the
    Zoltek case shows, our decision in Zoltek I does not control
    the jurisdictional analysis here. 4 We agree, however, with
    the conclusion in Zoltek I that 
    28 U.S.C. § 1498
     provides
    the only avenue for a patent owner to bring an action
    against the government for patent infringement.
    The Takings Clause of the Fifth Amendment states
    that private property shall not “be taken for public use,
    4    There, on remand, the Claims Court granted the
    patent owner’s motion to amend its complaint and to trans-
    fer the case, and certified that decision to us for an inter-
    locutory appeal. We then voted en banc to vacate the
    Zoltek I holding that Zoltek’s § 1498(a) infringement claims
    were barred. Zoltek II, 
    672 F.3d at
    1326–27. And, we held
    that, “[s]ince the Government’s potential liability under
    § 1498(a) is established, we need not and do not reach the
    issue of the Government’s possible liability under the Con-
    stitution for a taking. The trial court’s determinations on
    that issue are vacated.” Id. at 1327. The Zoltek I takings
    analysis, is therefore, persuasive authority, but not binding
    on us.
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    10                                  GOLDEN v. UNITED STATES
    without just compensation.” U.S. Const. amend. V. But a
    cause of action under the Fifth Amendment is unavailable
    to patent owners alleging infringement by the government.
    Schillinger, 
    155 U.S. at
    168–69. In Schillinger, the Su-
    preme Court held that a patentee could not sue the govern-
    ment for patent infringement as a Fifth Amendment
    taking. 
    Id.
     The Court explained that, under the Tucker
    Act, Congress waived its sovereign immunity as to certain
    types of claims, but that waiver does not extend to “claims
    founded upon torts.” 
    Id. at 168
    . According to the Court, a
    patent infringement action “is one sounding in tort[,]” and,
    just as Congress could not have intended every wrongful
    arrest or seizure of property to expose it to damages in the
    Court of Claims under the Due Process Clause, the wrong-
    ful appropriation of a patent license cannot expose the gov-
    ernment to liability under the Fifth Amendment’s Takings
    Clause. 
    Id.
     at 168–169. Thus, under Schillinger, prior to
    the Patent Act of 1910 (later codified as amended at 
    28 U.S.C. § 1498
    ), the Claims Court lacked jurisdiction over
    patent infringement actions against the government. As
    we recognized in Zoltek I, Schillinger remains the law.
    
    442 F.3d at 1350
    .
    Subsequent legislation confirms that a patent owner
    may not pursue an infringement action as a taking under
    the Fifth Amendment. Following Schillinger, Congress en-
    acted the Patent Act of 1910, which “augmented the Court
    of Claims’ Tucker Act jurisdiction by providing jurisdiction
    over the tort of patent infringement.” 
    Id. at 1351
    . We ex-
    plained in Zoltek I that 
    28 U.S.C. § 1498
     “‘add[ed] the right
    to sue the United States in the court of claims’ for patent
    infringement.” 
    Id.
     (quoting Crozier v. Fried. Krupp Ak-
    tiengesellschaft, 
    224 U.S. 290
    , 304 (1912)) (alterations in
    original). Before the 1910 Act, no patent infringement ac-
    tion could be brought against the government “unless in
    the Court of Claims under a contract or implied contract
    theory.” 
    Id.
     The Act “‘was intended alone to provide for
    the discrepancy resulting from the right in one case to sue
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    GOLDEN v. UNITED STATES                                    11
    on the implied contract and the non-existence of a right to
    sue’ for infringement.” 
    Id.
     (quoting William Cramp & Sons
    Ship & Engine Bldg. Co. v. Int’l Curtis Marine Turbine Co.,
    
    246 U.S. 28
    , 41 (1918)). If the right to challenge the gov-
    ernment’s infringement already existed under the Fifth
    Amendment, there would be no need to expressly add to the
    Claims Court’s jurisdiction through the Patent Act. See 
    id.
    Indeed, as we recognized in Zoltek I, holding to the contrary
    would “read an entire statute, § 1498, out of existence.”
    Id. at 1352.
    Schillinger mandates the conclusion reached by the
    Zoltek I court, which we expressly adopt today: the Claims
    Court does not have jurisdiction to hear takings claims
    based on alleged patent infringement by the government.
    Those claims sound in tort and are to be pursued exclu-
    sively under 
    28 U.S.C. § 1498
    . Thus, the Claims Court was
    without jurisdiction to hear Golden’s patent infringement-
    based takings claims, and it properly dismissed these
    claims. 5
    B.
    We next turn to Golden’s IPR-based takings claims.
    We first address whether the Claims Court had jurisdiction
    to hear these claims.
    The government alleges that, “upon further considera-
    tion,” it has identified a jurisdictional problem that was not
    recognized below. Appellee’s Br. 40. The government ar-
    gues that the American Invents Act (“AIA”)’s creation of
    5    Because we find the Claims Court did not have ju-
    risdiction to hear Golden’s patent infringement-based tak-
    ings claims, we need not address the court’s alternative
    holding that these claims are duplicative of the claims in
    the Lead Case.
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    12                                  GOLDEN v. UNITED STATES
    inter partes review by the Board, followed by judicial re-
    view before this court, creates a “‘self-executing remedial
    scheme’ that ‘supersedes the gap-filling role of the Tucker
    Act.’” 
    Id. at 41
     (quoting United States v. Bormes, 
    568 U.S. 6
    , 13 (2012)). According to the government, the AIA statu-
    tory scheme displaces Tucker Act jurisdiction because
    there is no procedural impediment to presentation of a tak-
    ings claim to the agency and because the remedial scheme
    provides for judicial review of constitutional challenges to
    the agency’s action. 
    Id.
     at 43–49.
    The government’s argument is without merit. In
    Bormes, the Supreme Court explained that Tucker Act ju-
    risdiction is displaced “when a law assertedly imposing
    monetary liability on the United States contains its own ju-
    dicial remedies.” 
    568 U.S. at 12
     (emphasis added). More
    recently, the Court explained that, “[t]o determine whether
    a statutory scheme displaces Tucker Act jurisdiction, a
    court must ‘examin[e] the purpose of the [statute], the en-
    tirety of its text, and the structure of review that it estab-
    lishes.’” Horne v. Dep’t of Agric., 
    569 U.S. 513
    , 526–27
    (2013) (quoting United States v. Fausto, 
    484 U.S. 439
    , 444
    (1988)). Thus, when there is a precisely defined statutory
    framework for a claim that could be brought against the
    United States, the Tucker Act gives way to the more spe-
    cific statutory scheme.
    Regardless of the structure of review it establishes, the
    AIA is not a statute that provides for claims against the
    United States. Looking to the purpose and text of the stat-
    ute, the AIA represents an overhaul of the U.S. patent sys-
    tem from a first-to-invent to a first-to-file regime.
    
    35 U.S.C. § 100
    . It also establishes post-grant review of
    patents. 
    35 U.S.C. § 321
    . The government is correct that,
    under the AIA, parties may raise constitutional challenges
    in our court on appeal from Board decisions. But this re-
    medial scheme does not convert the AIA into a statutory
    framework for claims against the United States. The AIA
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    GOLDEN v. UNITED STATES                                   13
    is by no means “a law assertedly imposing monetary liabil-
    ity on the United States.” Borne, 
    568 U.S. at 12
    . Accord-
    ingly, we reject the government’s argument that the AIA
    displaced Tucker Act jurisdiction over Golden’s IPR-based
    takings claims. 6
    As to the merits of Golden’s IPR-based takings claims,
    on appeal, Golden argues, inter alia, that the government’s
    actions (including in the IPR) resulted in a reduction of
    value of his property, destroyed his competitive edge, and
    interfered with his “reasonable investment-backed expec-
    tations.” Appellant’s Br. 7–8. We rejected similar argu-
    ments in Celgene Corp. v. Peter, 
    931 F.3d 1342
     (Fed. Cir.
    2019). There, we explained that inter partes review pro-
    ceedings, like patent validity challenges in the district
    court, “serve the purpose of correcting prior agency error of
    issuing patents that should not have issued in the first
    place[.]” 
    Id. at 1361
    . Additionally, we noted that “[p]atent
    owners have always had the expectation that the validity
    of patents could be challenged in district court. For forty
    years, [they] have also had the expectation that the PTO
    could reconsider the validity of issued patents on particular
    grounds, applying a preponderance of the evidence stand-
    ard.” 
    Id.
     at 1362–63. Accordingly, we held that retroactive
    application of inter partes review proceedings to pre-AIA
    patents is not an unconstitutional taking under the Fifth
    Amendment. 
    Id. at 1362
    .
    Although Golden does not challenge retroactive appli-
    cation of inter partes review in this case, Celgene controls
    the outcome here. Golden, as a patent owner, has “always
    had the expectation that the validity of patents could be
    6   This does not, of course, alter our conclusion that
    an action for patent infringement sounds in tort and the
    only avenue to sue the United States government for unau-
    thorized licensing of patent rights is a suit pursuant to
    
    28 U.S.C. § 1498
    . See supra, Section A.
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    14                                  GOLDEN v. UNITED STATES
    challenged in district court” or before the PTO. Id. at
    1362–63. Under Celgene, subjecting patents to inter partes
    review proceedings is not an unconstitutional taking under
    the Fifth Amendment. 7 Id. at 1362.
    We are mindful, of course, of the unique circumstances
    of the IPR in Golden’s case. This IPR was initiated by DHS,
    a federal agency. Following the cancellation of certain
    claims of his RE43,990 patent in the IPR, the Supreme
    Court made clear in Return Mail that “a federal agency is
    not a ‘person’ who may petition for post-issuance review
    under the AIA.” 
    139 S. Ct. at 1867
    . Golden may ar-
    gue that, in view of Return Mail, the cancellation of the
    7   Although it does not expressly address the issue
    here, the government has “not dispute[d] that a valid pa-
    tent is private property for the purposes of the Takings
    Clause.” Celgene, 931 F.3d at 1358. And, as we noted in
    Celgene, the Supreme Court’s recent decision in Oil States
    Energy Servs., LLC v. Greene’s Energy Grp., LLC, 
    138 S. Ct. 1365
     (2018), is not to the contrary. In Oil States, the
    Court explained that “the decision to grant a patent is a
    matter involving public rights—specifically the grant of a
    public franchise.” 
    138 S. Ct. at 1373
     (emphasis in original).
    At the same time, it “emphasize[d] the narrowness of [its]
    holding” explaining that it was addressing “only the precise
    constitutional challenges” raised in that case. 
    Id. at 1379
    .
    The Court admonished that its “decision should not be mis-
    construed as suggesting that patents are not property for
    purposes of the Due Process Clause or the Takings Clause.”
    
    Id.
     Despite the Claims Court’s express finding on the sta-
    tus of patent rights under the Fifth Amendment, we de-
    cline to address that question here, however, because, even
    if Golden’s patents are his private property for Takings
    Clause purposes, under Celgene, cancellation of patent
    claims in inter partes review cannot be a taking under the
    Fifth Amendment.
    Case: 19-2134    Document: 37      Page: 15   Filed: 04/10/2020
    GOLDEN v. UNITED STATES                                   15
    patent claims in an inter partes review initiated by the gov-
    ernment could be considered an unconstitutional taking
    under the Fifth Amendment. We need not decide whether
    that is the case, however, for two reasons. First, Golden
    did not appeal the Board’s final written decision in the IPR
    to this court, and the decision became final before the Re-
    turn Mail decision was issued. Second, Golden voluntarily
    filed a non-contingent motion to amend the claims on
    which the IPR was instituted. His substitute claims were
    then found unpatentable. The claims at issue were there-
    fore cancelled as result of Golden’s own voluntary actions.
    In these circumstances, cancellation of the claims in the
    government-initiated inter partes review cannot be charge-
    able to the government under any legal theory.
    C.
    Finally, we address Golden’s arguments regarding the
    alleged takings by the Claims Court and the breach of “im-
    plied-in-fact contracts” by the government. Appellant’s Br.
    5, 13. As the Claims Court explained, the actions of the
    Federal Circuit and the Claims Court cannot be an uncon-
    stitutional taking, as both courts “adjudicate rights in pa-
    tents.” Claims Court Op. at 4. As to the breach of “implied-
    in-fact contracts,” it appears these arguments are made ei-
    ther in support of Golden’s takings claims, discussed above,
    or raised for the first time on appeal. Accordingly, these
    arguments are either unpersuasive or waived.
    CONCLUSION
    For the foregoing reasons, we affirm the Claims Court’s
    decision. We have considered the parties’ remaining argu-
    ments and find them unpersuasive.
    AFFIRMED