Apple Inc. v. Vidal ( 2023 )


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  • Case: 22-1249    Document: 71      Page: 1    Filed: 03/13/2023
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    APPLE INC., CISCO SYSTEMS, INC., GOOGLE LLC,
    INTEL CORPORATION, EDWARDS
    LIFESCIENCES CORPORATION, EDWARDS
    LIFESCIENCES LLC,
    Plaintiffs-Appellants
    v.
    KATHERINE K. VIDAL, UNDER SECRETARY OF
    COMMERCE FOR INTELLECTUAL PROPERTY
    AND DIRECTOR OF THE UNITED STATES
    PATENT AND TRADEMARK OFFICE,
    Defendant-Appellee
    ______________________
    2022-1249
    ______________________
    Appeal from the United States District Court for the
    Northern District of California in No. 5:20-cv-06128-EJD,
    Judge Edward J. Davila.
    ______________________
    Decided: March 13, 2023
    ______________________
    CATHERINE CARROLL, Wilmer Cutler Pickering Hale and
    Dorr LLP, Washington, DC, argued for all plaintiffs-appel-
    lants. Plaintiffs-appellants Apple Inc., Cisco Systems, Inc.,
    Intel Corporation also represented by DAVID LEHN;
    REBECCA M. LEE, San Francisco, CA; MARK D. SELWYN,
    Palo Alto, CA; ALYSON ZUREICK, New York, NY.
    Case: 22-1249    Document: 71     Page: 2     Filed: 03/13/2023
    2                                          APPLE INC.   v. VIDAL
    NATHAN K. KELLEY, Perkins Coie LLP, Washington,
    DC, for plaintiff-appellant Google LLC. Also represented
    by ANDREW DUFRESNE, Madison, WI.
    CHRISTY G. LEA, Knobbe, Martens, Olson & Bear, LLP,
    Irvine, CA, for plaintiffs-appellants Edwards Lifesciences
    Corporation, Edwards Lifesciences LLC. Also represented
    by JOHN B. SGANGA, JR.
    WEILI J. SHAW, Appellate Staff, Civil Division, United
    States Department of Justice, Washington, DC, argued for
    defendant-appellee.      Also represented by MICHAEL
    GRANSTON, DANIEL TENNY; MICHAEL S. FORMAN, THOMAS
    W. KRAUSE, AMY J. NELSON, FARHEENA YASMEEN RASHEED,
    Office of the Solicitor, United States Patent and Trade-
    mark Office, Alexandria, VA.
    MARK S. DAVIES, Orrick, Herrington & Sutcliffe LLP,
    Washington, DC, for amici curiae Acushnet Company, Al-
    liance for Automotive Innovation, Comcast Cable Commu-
    nications, LLC, Computer and Communication Industry
    Association, Dell, Inc., Garmin International, Inc., Juniper
    Networks, Inc., Micron Technology Inc., SAS Institute,
    Inc., Symmetry, LLC, Taiwan Semiconductor Manufactur-
    ing Company, Ltd., Verizon Services Corp., VIZIO, Inc.,
    VMware, Inc. Also represented by ALEXANDRA BURSAK,
    New York, NY.
    JAMES OLIVA, American Honda Motor Co., Inc., Tor-
    rance, CA, for amicus curiae American Honda Motor Co.,
    Inc.
    ROBERT THOMAS SMITH, Katten Muchin Rosenman
    LLP, Washington, DC, for amicus curiae Mylan Pharma-
    ceuticals Inc.  Also represented by ERIC THOMAS
    WERLINGER; DEEPRO MUKERJEE, LANCE SODERSTROM, New
    York, NY.
    Case: 22-1249       Document: 71   Page: 3    Filed: 03/13/2023
    APPLE INC.   v. VIDAL                                      3
    MICHAEL BERTA, Arnold & Porter Kaye Scholer LLP,
    San Francisco, CA, for amicus curiae Tesla, Inc. Also rep-
    resented by JAMES SHERWOOD, Tesla, Inc., Washington,
    DC.
    ______________________
    Before LOURIE, TARANTO, and STOLL, Circuit Judges.
    TARANTO, Circuit Judge.
    Plaintiffs are Apple Inc. and four other companies that
    have repeatedly been sued for patent infringement and
    thereafter petitioned the Director of the Patent and
    Trademark Office (PTO) to institute inter partes reviews
    (IPRs), under 
    35 U.S.C. §§ 311
    –319, so that the PTO’s
    Patent Trial and Appeal Board could adjudicate the
    petitions’ unpatentability challenges to patent claims that
    had been asserted against them in court. In the present
    action, brought against the Director in district court under
    the Administrative Procedure Act (APA), 
    5 U.S.C. §§ 701
    –
    706, plaintiffs challenge instructions the Director issued to
    the Board to inform it how to exercise, under delegation by
    the Director, the Director’s discretion whether to institute
    a requested IPR. Plaintiffs assert that the instructions are
    likely to produce too many denials of institution requests.
    The district court dismissed the APA action on the ground
    that the Director’s instructions were made unreviewable by
    the IPR provisions of the patent statute.
    We affirm in part and reverse in part. We affirm the
    unreviewability dismissal of plaintiffs’ challenges to the
    instructions as being contrary to statute and arbitrary and
    capricious. No constitutional challenges are presented.
    But we reverse the unreviewability dismissal of plaintiffs’
    challenge to the instructions as having been improperly
    issued because they had to be, but were not, promulgated
    through notice-and-comment rulemaking under 
    5 U.S.C. § 553
    . That challenge, we also hold, at least Apple had
    standing to present. We remand for further proceedings on
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    4                                           APPLE INC.   v. VIDAL
    the lone surviving challenge. Like the district court, we do
    not reach the merits of that challenge.
    I
    A
    In the America Invents Act (AIA), 
    Pub. L. No. 112-29, 125
     Stat. 284 (2011), Congress authorized the filing of a
    petition asking the PTO to conduct an IPR of whether iden-
    tified claims in an issued patent comply with certain pa-
    tentability requirements of novelty or obviousness over
    prior art. 
    35 U.S.C. § 311
    (a)–(b). The Board is the PTO
    component assigned to perform the IPR adjudication if a
    review is instituted, 
    id.
     §§ 6(b)(4), 316–318, with the
    Board’s “final written decision” in the IPR subject to appeal
    to this court, id. § 319; see id. § 141. But it is the PTO’s
    Director to whom Congress assigned the task of determin-
    ing whether to institute a review in the first place. Id.
    § 314(b); see Thryv, Inc. v. Click-To-Call Technologies, LP,
    
    140 S. Ct. 1367
    , 1370–71 (2020).
    For the Director to institute, certain preconditions
    must be met. One prerequisite, for all petitions, is the
    crossing of a merits “threshold”: “The Director may not au-
    thorize an [IPR] to be instituted unless the Director deter-
    mines that the information presented in the petition . . .
    and any response . . . shows that there is a reasonable like-
    lihood that the petitioner would prevail with respect to at
    least 1 of the claims challenged in the petition.” 
    35 U.S.C. § 314
    (a). Another prerequisite, applicable in the predicta-
    bly common situation where the patent owner has already
    sued the petitioner (or a real party in interest or privy) for
    infringement of the patent, is compliance with a timing
    limit: The petition must be filed within one year after ser-
    vice of the infringement complaint. 
    Id.
     § 315(b).
    Even when such requirements are met, however, the
    statute uses no language commanding institution. “The
    Director is permitted, but never compelled, to institute an
    IPR[, a]nd no petitioner has a right to such institution.”
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    APPLE INC.   v. VIDAL                                       5
    Mylan Laboratories Ltd. v. Janssen Pharmaceutica, N.V.,
    
    989 F.3d 1375
    , 1382 (Fed. Cir. 2021). The Supreme Court
    explained in SAS Institute, Inc. v. Iancu: Ҥ 314(a) invests
    the Director with discretion on the question whether to in-
    stitute review.” 
    138 S. Ct. 1348
    , 1356 (2018); see also
    Cuozzo Speed Technologies, LLC v. Lee, 
    579 U.S. 261
    , 273
    (2016) (citing § 314(a) and stating: “no mandate to institute
    review”).
    Congress not only left the discretion to the Director but
    also protected its exercise from judicial review, even re-
    garding the mandatory threshold conditions for institution,
    at least where, as here, the court challenge is not on a con-
    stitutional ground. See Cuozzo, 579 U.S. at 275 (noting
    that it was not addressing challenges that implicate consti-
    tutional questions, which present distinct issues regarding
    congressional preclusion of judicial review). 1 Thus, Con-
    gress declared: “The determination by the Director
    whether to institute an inter partes review under [§ 314]
    shall be final and nonappealable.” 
    35 U.S.C. § 314
    (d).
    Based on that provision, whose terms apply whether the
    determination is negative or positive, the Supreme Court
    has held that the institution decision is unreviewable, even
    in a proper appeal of a final written decision reached by the
    Board after a positive institution determination: “Congress
    has committed the decision to institute inter partes review
    to the Director’s unreviewable discretion.” United States v.
    Arthrex, Inc., 
    141 S. Ct. 1970
    , 1977 (2021); see Thryv, 140
    1 Because the present case does not involve a constitu-
    tional challenge, we hereafter generally refrain from not-
    ing that the unreviewability principle at issue has not been
    extended to constitutional challenges.
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    6                                           APPLE INC.   v. VIDAL
    S. Ct. at 1372–73 (relied on by Arthrex for above state-
    ment); Cuozzo, 579 U.S. at 271–75. 2
    From the outset of the IPR program, the Director dele-
    gated the institution authority to the Board. 
    37 C.F.R. § 42.4
    (a); see Arthrex, 141 S. Ct. at 1977; Thryv, 
    140 S. Ct. at 1371
    . We have upheld that delegation, recognizing “the
    longstanding rule that agency heads have implied author-
    ity to delegate to officials within the agency,” that “Con-
    gress regularly gives heads of agencies more tasks than a
    single person could ever accomplish, necessarily assuming
    that the head of the agency will delegate the task to a sub-
    ordinate officer,” and that, in particular, “Congress as-
    signed the Director the decision to institute, necessarily
    assuming that the popularity of inter partes review and the
    short time frame to decide whether to institute inter partes
    review would mean that the Director could not herself re-
    view every petition.”       Ethicon Endo-Surgery, Inc. v.
    Covidien LP, 
    812 F.3d 1023
    , 1031–32 (Fed. Cir. 2016) (foot-
    note omitted). We have also made clear that any institu-
    tion decision made by the Board as delegatee of the
    Director is subject to reversal by the Director. In re Palo
    Alto Networks, Inc., 
    44 F.4th 1369
    , 1375 & n.3 (Fed. Cir.
    2022) (stating that “the Director plainly has the authority
    to revoke the delegation or to exercise her review authority
    in individual cases despite the delegation”); see Arthrex,
    2  In SAS, the Supreme Court held that § 318, whose
    subject is not institution but the scope of a required final
    written decision, requires the Board, in its final written de-
    cision, to decide the patentability of all patent claims chal-
    lenged in the petition. 
    138 S. Ct. at
    1354–57. It follows, as
    a corollary, that the institution determination must be an
    all-or-nothing one, a “binary” one, 
    id. at 1355
    , regarding
    the claims to be reviewed. It is that institution determina-
    tion which is the subject of the unreviewability principle of
    Arthrex, Thryv, and Cuozzo.
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    APPLE INC.   v. VIDAL                                        7
    141 S. Ct. at 1980 (“The Director . . . controls the decision
    whether to institute inter partes review . . . .”).
    B
    The one-year time limit of § 315(b), already mentioned,
    makes clear that Congress recognized the likelihood of par-
    allel pending proceedings in the PTO and in the courts. Be-
    ing sued for infringement provides a defendant a distinct
    motivation to seek cancellation, through an IPR, of patent
    claims asserted against it in court. 3 The existence of such
    overlapping proceedings raises self-evident issues of effi-
    ciency and interbranch relations. But Congress generally
    left the two branches to exercise their available discretion
    to address such issues. Congress enacted no provision for
    this scenario that directs the court to stay its case in light
    of a pending request for IPR or an instituted IPR. Nor did
    Congress enact a provision prescribing how the Director is
    to address such an overlapping pending court case in exer-
    cising the discretion whether to institute an IPR.
    1
    The Director addressed this topic in 2019 and 2020 by
    exercising the authority to “designate[] past PTAB deci-
    sions as ‘precedential’ for future panels.” Arthrex, 141 S.
    Ct. at 1980 (citing § 316(a)(4), quoted supra n.2, and
    § 3(a)(2)(A), which states that “[t]he Director shall be
    3  Other provisions also reflect Congress’s expectation
    that the same patent claims might well be at issue in both
    an IPR proceeding and a court case. See, e.g., 
    35 U.S.C. § 315
    (e)(2) (estoppel bar); 
    id.
     § 315(a)(2) (addressing situa-
    tion of petitioner initiation of both court and agency pro-
    ceeding); id. § 316(a)(4) (providing that “[t]he Director shall
    prescribe regulations— . . . establishing and governing in-
    ter partes review under this chapter and the relationship
    of such review to other proceedings under this title,” the
    latter including actions in court, see id. § 281).
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    8                                          APPLE INC.   v. VIDAL
    responsible for providing policy direction and management
    supervision for the Office”); see Trial and Appeal Board,
    Standard Operating Procedure 2 (Revision 10) at 1–2
    (Standard Procedure 2). Specifically, the Director desig-
    nated as precedential, and hence binding on Board panels
    (Standard Procedure 2 at 11), two Board decisions that had
    denied IPR petitions: NHK Spring Co. v. Intri-Plex Tech-
    nologies, Inc., IPR2018-00752, 
    2018 WL 4373643
     (P.T.A.B.
    Sept. 12, 2018) (designated precedential on May 7, 2019),
    and Apple Inc. v. Fintiv, Inc., IPR2020-00019, 
    2020 WL 2126495
     (P.T.A.B. Mar. 20, 2020) (designated precedential
    on May 5, 2020). Both decisions address the role, in the
    decision whether to institute an IPR, of the pendency of
    district-court infringement litigation involving the same
    patents. The decisions, designated as precedential, consti-
    tute instructions from the Director regarding how the
    Board is to exercise the Director’s institution discretion.
    The decisions articulate “a discretionary standard for
    denying IPR petitions based on pending parallel litigation.”
    Plaintiffs’ Notice of Motion and Motion for Summary Judg-
    ment at 5, Apple Inc. v. Iancu, No. 20-cv-06128, 
    2021 WL 5232241
    , (N.D. Cal. Nov. 10, 2021), ECF No. 65, 
    2020 WL 8339428
     (heading, capitalization removed except for
    “IPR”). In NHK, the Board relied on “the advanced state of
    the district court proceeding” involving the same patent to
    deny institution, reasoning that, given the projected trial
    date in the parallel court case, conducting an IPR would be
    an inefficient use of agency resources. 
    2018 WL 4373643
    ,
    at *7. In Fintiv, the Board elaborated on NHK, enumerat-
    ing six factors—the last one open-ended—to be assessed in
    deciding whether to institute an IPR in parallel with an
    overlapping court case:
    1. whether the court granted a stay or evi-
    dence exists that one may be granted if a pro-
    ceeding is instituted;
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    APPLE INC.   v. VIDAL                                         9
    2. proximity of the court’s trial date to the
    Board’s projected statutory deadline for a fi-
    nal written decision;
    3. investment in the parallel proceeding by
    the court and the parties;
    4. overlap between issues raised in the peti-
    tion and in the parallel proceeding;
    5. whether the petitioner and the defendant
    in the parallel proceeding are the same party;
    and
    6. other circumstances that impact the
    Board’s exercise of discretion, including the
    merits.
    
    2020 WL 2126495
    , at *2. The Board explained how certain
    facts on the enumerated topics tend to weigh for or against
    institution, 
    id.
     at *3–7, and how the “concerns of ineffi-
    ciency and the possibility of conflicting decisions were par-
    ticularly strong” in NHK, 
    id. at *5
    . The Board stated
    generally that the factors “relate to whether efficiency, fair-
    ness, and the merits support the exercise of authority to
    deny institution in view of an earlier trial date in the par-
    allel proceeding,” 
    id. at *3
    . The Board summarized: “[I]n
    evaluating the factors, the Board takes a holistic view of
    whether efficiency and integrity of the system are best
    served by denying or instituting review.” 
    Id.
    2
    The above instructions (the Fintiv instructions) were
    the subject of this case when it was filed in district court,
    when it was decided by the district court, and when plain-
    tiffs filed their brief as appellants in this court. Thereafter,
    on June 21, 2022, the Director updated the instructions.
    On that day, having issued a request for comments, see Re-
    quest for Comments on Discretion to Institution Trials Be-
    fore the Patent Trial and Appeal Board, 
    85 Fed. Reg. 66,502
     (Oct. 20, 2020), and having received hundreds of
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    10                                         APPLE INC.   v. VIDAL
    comments, the Director announced (without publication in
    the Federal Register) “several clarifications” to the Fintiv
    instructions “under the Director’s authority to issue bind-
    ing agency guidance to govern the PTAB’s implementation
    of various statutory provisions.” Memorandum from PTO
    Director to PTAB, Interim Procedure for Discretionary De-
    nials in AIA Post-Grant Proceedings with Parallel District
    Court Litigation at 2–3 (June 21, 2022) (June 2022 Memo).
    The Director described Congress’s aim “to establish a
    more efficient and streamlined patent system that will im-
    prove patent quality and limit unnecessary and counter-
    productive litigation costs,” June 2022 Memo at 1 (quoting
    H.R. Rep. No. 112-98, pt. 1, at 40 (2011)), and its own ex-
    perience with cost-increasing inefficiency and gamesman-
    ship when parallel PTO proceedings and court cases exist,
    
    id.
     The Director now instructed the Board that it should
    not “rely on the Fintiv factors to discretionarily deny insti-
    tution in view of parallel district court litigation where a
    petition presents compelling evidence of unpatentability.”
    
    Id. at 2
    . The Director further stated that the Fintiv analy-
    sis does not apply when the parallel proceeding is not a dis-
    trict-court case but a proceeding within the International
    Trade Commission. 
    Id.
     at 2–3. The Director added that no
    Fintiv-based institution denial would occur “where a peti-
    tioner presents a stipulation not to pursue in a parallel pro-
    ceeding the same grounds or any grounds that could have
    reasonably been raised before the [Board].” 
    Id. at 3
    . Fi-
    nally, the Director announced that, in the application of the
    Fintiv instructions, “when other relevant factors weigh
    against exercising discretion to deny institution or are neu-
    tral, the proximity to trial should not alone outweigh all of
    those other factors,” 
    id. at 8
    , and that, even as to that fac-
    tor, a particular “scheduled trial date” was not a reliable
    indicator of proximity, which instead should be assessed
    based “the most recent statistics on median time-to-trial
    for civil actions in the district court” hearing the parallel
    case, 
    id.
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    APPLE INC.   v. VIDAL                                     11
    The Director stated that the new instructions would
    apply to all pending proceedings in the PTO and “remain
    in place until further notice.” 
    Id. at 9
    . But the Director
    added that “[t]he Office expects to replace this interim
    guidance with rules after it has completed formal rulemak-
    ing.” 
    Id.
    The current challenge seeks prospective relief only,
    and the June 2022 instructions are part of the current op-
    erative instruction set regarding institution decisions by
    the Board as delegatee of the Director. 4 It would seem
    proper, therefore, were it important, to consider the up-
    dated instructions rather than the Fintiv instructions
    alone. See National Treasury Employees Union v. Von
    Raab, 
    489 U.S. 656
    , 661 n.1 (1989) (deciding case based on
    agency program as altered after court of appeals decision).
    But none of our conclusions in this appeal depend on
    whether we consider the Fintiv instructions or the updated
    instructions.
    C
    On August 31, 2020, Apple and three other companies
    filed suit in the Northern District of California, seeking to
    challenge the Fintiv instructions on three grounds under
    the APA: (1) that the Director acted contrary to the IPR
    provisions of the patent statute, see 
    5 U.S.C. § 706
    (2)(C);
    (2) that the Fintiv instructions are arbitrary and capri-
    cious, see 
    5 U.S.C. § 706
    (2)(A); and (3) that the Fintiv in-
    structions were issued without compliance with the notice-
    and-comment rulemaking requirements of 
    5 U.S.C. § 553
    ,
    4   For subsequent clarifications from the Director, see
    OpenSky Industries, LLC v. VLSI Tech. LLC, IPR2021-
    01064, 
    2022 WL 4963049
    , at *20 (P.T.A.B. Oct. 4, 2022)
    (precedential) (Director’s Decision on Determining Abuse
    of Process), and CommScope Technologies LLC v. Dali
    Wireless, Inc., IPR2022-01242, 
    2023 WL 2237986
    , at *2
    (P.T.A.B. Feb. 27, 2023) (Director’s Decision on Rehearing).
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    12                                        APPLE INC.   v. VIDAL
    as assertedly required by that APA provision and by 
    35 U.S.C. § 316
    . Apple, 
    2021 WL 5232241
    , at *3. An amended
    complaint added a fifth plaintiff but asserted the same
    challenges. The government moved to dismiss the case, ar-
    guing that plaintiffs lacked standing and, in the alterna-
    tive, that APA review was unavailable both because (1)
    “statutes preclude judicial review” of the matters presented
    and (2) the challenges are to “agency action [that] is com-
    mitted to agency discretion by law,” 
    5 U.S.C. § 701
    (a)(1)–
    (2). Briefing on that motion followed—on the same sched-
    ule as briefing on plaintiffs’ own motion for summary judg-
    ment, which the court ruled, at plaintiffs’ urging, was
    sufficiently “intertwined” with the dismissal motion to war-
    rant parallel briefing. Order on Defendants’ Motion for Ad-
    ministrative Relief Requesting a Stay of Briefing on
    Plaintiffs’ Motion for Summary Judgment at 1, Apple, No.
    20-cv-06128, 
    2021 WL 5232241
    , ECF No. 70; Plaintiffs’ Op-
    position to Defendant’s Motion for Administrative Relief
    Requesting a Stay of Briefing on Plaintiffs’ Motion for Sum-
    mary Judgment at 2, Apple, No. 20-cv-06128, 
    2021 WL 5232241
    , ECF No. 69.
    On November 10, 2021, the district court granted the
    government’s motion to dismiss. Apple, 
    2021 WL 5232241
    ,
    at *1–6. The district court first concluded that plaintiffs
    had standing. 
    Id.
     at *4–5. The court then concluded that
    their challenges were to Director actions that were not re-
    viewable. 
    Id.
     at *5–6. The court reasoned that 
    35 U.S.C. § 314
    (d), together with Cuozzo and Thryv, precluded re-
    view because, to rule on the challenges, the court “would
    have to analyze questions that are closely tied to the appli-
    cation and interpretation of statutes” governing institution
    decisions. 
    Id. at *6
     (internal quotation marks, for quote
    from Cuozzo and Thryv, omitted). The court therefore dis-
    missed the case and “terminate[d] [p]laintiffs’ motion for
    summary judgment.” 
    Id.
     Like the parties before us, we
    treat this dismissal as invoking the exclusion from the APA
    applicable where “statutes preclude judicial review.” 
    5 U.S.C. § 701
    (a)(1).
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    APPLE INC.   v. VIDAL                                      13
    Plaintiffs appealed on December 8, 2021, and that ap-
    peal ripened when the district court entered final judgment
    on December 13, 2021. We have jurisdiction over the
    timely appeal under 
    28 U.S.C. § 1295
    (a)(1) because plain-
    tiffs’ claims, at least in part, are based on the patent stat-
    ute.
    II
    Plaintiffs argue on appeal that the district court erred
    when it held that the IPR provisions of the patent statute
    “preclude judicial review” of the challenged agency actions,
    bringing the case within the APA exclusion stated in 
    5 U.S.C. § 701
    (a)(1). The government, in response, defends
    the district court’s § 701(a)(1) ruling and argues, in the al-
    ternative, that affirmance is separately required because
    the challenged agency action is “committed to agency dis-
    cretion by law,” § 701(a)(2), and because plaintiffs lack
    standing. We may consider the § 701(a)(1) unreviewability
    issue first and need not consider § 701(a)(2) and standing
    unless we find a challenge to lie outside the § 701(a)(1) ex-
    clusion from APA review. See Block v. Community Nutri-
    tion Institute, 
    467 U.S. 340
    , 353 n.4 (1984). We decide the
    issues presented, which are entirely legal, de novo. See
    Alarm.com Inc. v. Hirshfeld, 
    26 F.4th 1348
    , 1354 (Fed. Cir.
    2022); Digitalis Education Solutions, Inc. v. United States,
    
    664 F.3d 1380
    , 1384 (Fed. Cir. 2012).
    We begin with plaintiffs’ first two challenges (urging
    that the Director’s instructions violate the IPR statute and
    are arbitrary and capricious), which we consider together.
    We affirm the § 701(a)(1) dismissal of those challenges and
    so need not consider § 701(a)(2) or standing. We then ad-
    dress the remaining challenge (concerning the absence of
    notice-and-comment rulemaking). We hold that neither
    § 701(a)(1) nor § 701(a)(2) bars review of the third chal-
    lenge and that at least Apple has standing to press it. We
    therefore reverse the dismissal as to the third challenge
    and remand.
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    14                                         APPLE INC.   v. VIDAL
    A
    Plaintiffs’ first two counts in their amended complaint
    challenge the content of the Director’s institution instruc-
    tions. The statutory challenge is that the instructions al-
    low, and encourage or even require, denial of institution
    contrary to proscriptions plaintiffs draw from the IPR stat-
    ute. Most concretely, plaintiffs assert that § 315(b)’s set-
    ting of an outer time limit on filing a petition, where the
    petitioner or its privy or the real party in interest has been
    sued on the patent in court, implies that the Director is for-
    bidden, when determining whether to institute, to consider
    the timing of the petition within that limit and the stage of
    development of the court case. The arbitrary-and-capri-
    ciousness challenge is that the Fintiv instructions are not
    “reasonable and reasonably explained.” Federal Commu-
    nications Commission v. Prometheus Radio Project, 
    141 S. Ct. 1150
    , 1158 (2021) (“The APA’s arbitrary-and-capricious
    standard requires that agency action be reasonable and
    reasonably explained.”); Snyder v. McDonough, 
    1 F. 4th 996
    , 1005 (Fed. Cir. 2021). Plaintiffs assert that the Fintiv
    instructions’ directive to consider the time to trial in the
    parallel court case disregards the unreliability of court-set
    trial dates, which are frequently moved forward. For both
    challenges, plaintiffs invoke some of the policies articu-
    lated in the legislative process leading to the creation of the
    IPR program in the 2011 AIA.
    These two challenges have institution as their direct,
    immediate, express subject. In this respect, the challenges
    are critically different from the challenge the Supreme
    Court agreed with in SAS, a decision on which plaintiffs
    rely. There, the subject of the challenge was the interpre-
    tation of § 318, which prescribes the scope of the final writ-
    ten decision required of the Board in an IPR. The Court
    held that § 318 requires the final written decision to “re-
    solve all of the claims in the case.” 
    138 S. Ct. at 1353
    . That
    holding was not precluded by the unreviewability of insti-
    tution decisions already articulated in Cuozzo, even though
    Case: 22-1249      Document: 71    Page: 15     Filed: 03/13/2023
    APPLE INC.   v. VIDAL                                       15
    the § 318 holding had, as a corollary, the effect of requiring
    the Director’s decision whether to institute a requested re-
    view to be essentially an all-or-nothing one. Id. at 1358–
    60. As the Court explained in Thryv, the merely collateral
    effect of a provision concerning “the manner in which the
    agency’s review ‘proceeds’ once instituted” did not bring
    SAS within the principle of unreviewability of “whether the
    agency should have instituted review at all.” 
    140 S. Ct. at 1376
    .
    SAS thus does not alter the principle of unreviewabil-
    ity governing “application and interpretation of statutes re-
    lated to the [PTO’s] decision to initiate inter partes
    review.’” 
    Id. at 1373
     (internal quotation marks omitted)
    (quoting Cuozzo, 579 U.S. at 275); see id. at 1376 n.8.
    Plaintiffs’ statutory and arbitrary-and-capriciousness chal-
    lenges in this case focus directly and expressly on institu-
    tion standards, nothing else. The Supreme Court in
    Cuozzo and Thryv did not exclude any challenge from the
    reviewability bar where the invoked provisions of law di-
    rectly govern institution—as the Court understood was the
    case for the pleading provision that was at issue in Cuozzo
    (§ 312(a)(3) (a petition “may be considered only if . . .”) and
    the timing provision that was at issue in Thryv (§ 315(b)
    (an IPR “may not be instituted if . . .”). See Thryv, 
    140 S. Ct. at 1373
    , 1376 n.8. 5
    5  The Court in Cuozzo recognized, as SAS was soon to
    illustrate, that some statutory provisions addressed to
    other matters might have an indirect bearing on institu-
    tion, and for that reason the Cuozzo Court said that it was
    not deciding “the precise effect of § 314(d) on appeals that
    implicate constitutional questions, that depend on other
    less closely related statutes, or that present other ques-
    tions of interpretation that reach, in terms of scope and im-
    pact, well beyond” § 314. 579 U.S. at 275. The Court in
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    16                                         APPLE INC.   v. VIDAL
    In Arthrex, the Supreme Court confirmed the principle
    of unreviewability of the Director’s decision whether to in-
    stitute. 141 S. Ct. at 1977. The Court relied indirectly on
    Cuozzo’s holding that the IPR statute’s text, legislative his-
    tory, and structure supplied the clear and convincing evi-
    dence required to overcome the strong presumption in
    favor of reviewability generally, 579 U.S. at 273, and on
    Cuozzo’s application of the unreviewability principle even
    in a case in which a review was instituted and completed
    and a proper appeal was taken to this court of the Board’s
    final written decision, id. at 271–75. The Court in Arthrex
    directly relied on Thryv, in which the Court, as in Cuozzo,
    applied the unreviewability principle in a proper appeal
    and made clear that the principle bars judicial resolution
    of even run-of-the-mill statutory interpretation issues in-
    herent in an institution determination by the Director as
    long as the statutory provision is one sufficiently focused
    on institution itself, as the Court held was true of § 315(b),
    Thryv, 
    140 S. Ct. at
    1372–73. Nothing in the unreviewa-
    bility principle repeatedly affirmed by the Supreme Court
    in this setting, moreover, turns on whether the Director
    has provided an explanation (as the Board, as delegatee,
    typically does). That is hardly surprising, as the Supreme
    Cuozzo further stated that its holding did not “enable the
    agency to act outside its statutory limits by, for example,
    canceling a patent claim for ‘indefiniteness under § 112’ in
    an inter partes review.” Id. The example given is the
    PTO’s “canceling a patent claim” in an IPR (after institu-
    tion, see § 318(b)), not an aspect of the institution determi-
    nation. Id. The Court in Thryv subsequently noted,
    without elaboration, that it was not “decid[ing] whether
    mandamus might be available in an extraordinary case.”
    
    140 S. Ct. at
    1374 n.6. The case before us is not a manda-
    mus case. See also Mylan, 989 F.3d at 1382 (holding man-
    damus standard not met for challenge to denial based on
    Fintiv instructions).
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    APPLE INC.   v. VIDAL                                      17
    Court has rejected the notion that “if the agency gives a
    ‘reviewable’ reason for otherwise unreviewable action, the
    action becomes reviewable.” Interstate Commerce Commis-
    sion v. Brotherhood of Locomotive Engineers, 
    482 U.S. 270
    ,
    283 (1987).
    The present case, unlike Thryv and Cuozzo, does not
    involve a petition-specific challenge, i.e., a challenge to a
    Director determination whether to institute a review re-
    quested in an individual petition. Rather, it involves a
    challenge to the Director’s instructions to the Board, as del-
    egatee, regarding how to exercise the Director’s institution
    discretion. But we conclude that the IPR statute’s preclu-
    sion of review, as now settled by the Supreme Court based
    on statutory text, legislative history, and structure, must
    encompass preclusion of review of the content-focused chal-
    lenges to the instructions at issue here.
    This conclusion rests on what we already confirmed in
    Ethicon, namely, the inevitability and congressional expec-
    tation of the Director’s delegation of the institution deci-
    sion, given the large number of institution decisions the
    Director would otherwise have to make personally, in
    highly technical matters involving significant records,
    while fulfilling many other responsibilities. See Ethicon,
    
    812 F.3d at
    1031–32. Given the need for delegation, and
    the Director’s “political responsibility of determining which
    cases should proceed,” Saint Regis Mohawk Tribe v. Mylan
    Pharmaceuticals Inc., 
    896 F.3d 1322
    , 1327–28 (Fed. Cir.
    2018), the Director must be able to give guidance in the
    form of instructions to her delegatee(s)—the Board (or
    Board panels)—about how to make the institution determi-
    nations on her behalf. Such guidance is crucial for ensur-
    ing that such determinations will overwhelmingly be made
    in accordance with the policy choices about institution she
    would follow if she were making the determinations herself
    and, relatedly, for minimizing the number of occasions on
    which she has to reverse such determinations, as she may
    do, see Palo Alto Networks, 44 F.4th at 1375. If the
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    18                                         APPLE INC.   v. VIDAL
    congressional preclusion of review of the decision to insti-
    tute is to be respected in the inevitable system of delega-
    tion, it must extend to the substance of such instructions.
    If the Director personally made an institution decision
    accompanied by an explanation containing the same rea-
    soning as appears in the instructions here at issue, then
    the decision would be unreviewable for being contrary to
    statute or arbitrary and capricious. For the IPR system to
    function with the delegations that are inevitable and con-
    gressionally expected, the same conclusion must follow for
    the instructions given by the Director to the Board as dele-
    gatee. We therefore affirm the district court’s dismissal of
    plaintiffs’ first two challenges under 
    5 U.S.C. § 701
    (a)(1). 6
    6 In the first two challenges, plaintiffs assert that the
    instructions, because of their content, will likely lead to
    non-institution determinations that will harm them. Non-
    institution determinations are a species of non-enforce-
    ment decisions, which are among the few recognized cate-
    gories of agency action that are generally “committed to
    agency discretion by law,” 
    5 U.S.C. § 701
    (a)(2). See Cuozzo,
    579 U.S. at 273 (“[T]he agency’s decision to deny a petition
    is a matter committed to the Patent Office’s discretion.”
    (citing § 701(a)(2))); Department of Homeland Security v.
    Regents of University of California, 
    140 S. Ct. 1891
    , 1905–
    06 (2020); Department of Commerce v. New York, 
    139 S. Ct. 2551
    , 2565 (2019); Lincoln v. Vigil, 
    508 U.S. 182
    , 191
    (1993); Heckler v. Chaney, 
    470 U.S. 821
    , 831–32 (1985).
    Some court decisions from outside the Supreme Court sug-
    gest that certain agency announcements of non-enforce-
    ment policy may fall outside the § 701(a)(2) exclusion from
    APA review. See, e.g., Crowley Caribbean Transport, Inc.
    v. Pena, 
    37 F.3d 671
    , 676 (D.C. Cir. 1994). The Supreme
    Court in Regents, when presented with an argument along
    those lines, did not reach the argument, because it held
    Case: 22-1249      Document: 71   Page: 19    Filed: 03/13/2023
    APPLE INC.   v. VIDAL                                     19
    B
    Plaintiffs’ third challenge is that the Director was re-
    quired, by 
    35 U.S.C. § 116
     together with 
    5 U.S.C. § 553
    , to
    promulgate the institution instructions through notice-
    and-comment rulemaking procedures. This challenge, we
    conclude, may be pressed under the APA. We also hold
    that at least Apple has standing to press it.
    1
    Whether notice-and-comment rulemaking procedures
    had to be employed for an agency action presents a matter
    “quite apart from the matter of substantive reviewability”
    of the action for being contrary to statute or arbitrary and
    capricious. Lincoln v. Vigil, 
    508 U.S. 182
    , 195 (1993); see
    American Medical Association v. Reno, 
    57 F.3d 1129
    , 1134
    (D.C. Cir. 1995) (“[U]nder the APA the ultimate availabil-
    ity of substantive judicial review is distinct from the ques-
    tion of whether the basic rulemaking strictures of notice
    and comment and reasoned explanation apply. . . . The
    APA’s procedural requirements are enforceable apart from
    the reviewability of the underlying action, and, indeed,
    support several important functions wholly distinct from
    judicial review.”) (omission of internal Lincoln citation and
    quote); Story v. Marsh, 
    732 F.2d 1375
    , 1381, 1384 (8th Cir.
    1984); Natural Resources Defense Council v. U.S. Depart-
    ment of Energy, 
    362 F. Supp. 3d 126
    , 147 (S.D.N.Y. 2019);
    Batalla Vidal v. Duke, 
    295 F. Supp. 3d 127
    , 148 (E.D.N.Y.
    2017). Given this recognized distinction, we reject a con-
    clusion of unreviewability, under § 701(a)(1) or (2), for
    plaintiffs’ third challenge.
    that the policy at issue was not a mere non-enforcement
    policy. 140 S. Ct. at 1906–07. We do not reach it either, as
    we affirm dismissal of plaintiffs’ first two challenges based
    on § 701(a)(1) and so need not decide whether § 701(a)(2)
    would independently support dismissal.
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    20                                         APPLE INC.   v. VIDAL
    Here, as discussed above, the Supreme Court has held
    that clear and convincing evidence establishes a congres-
    sional protection from judicial review of the substance of
    the Director’s institution discretion. That holding does not
    cover, and we see no basis for extending it to protect as
    well, the Director’s choice of whether to use notice-and-
    comment rulemaking to announce instructions for the in-
    stitution decision. The government here has not shown
    that anything in § 314(d) or elsewhere in the IPR statute
    supplies clear and convincing evidence that there was to be
    no judicial review of the choice of announcement procedure,
    a matter for which generally applicable standards exist.
    See, e.g., Lincoln, 
    508 U.S. at 196
    ; Xi’an Metals & Minerals
    Import & Export Co. v. United States, 
    50 F.4th 98
    , 105–06
    (Fed. Cir. 2022). In these circumstances, we have been
    shown no sufficient justification for a conclusion that the
    high standard of § 701(a)(1) for inferring a preclusion of re-
    view is met for this distinct issue.
    Nor have we been presented a persuasive justification
    for concluding that the use or non-use of notice-and-com-
    ment rulemaking procedures is a matter “committed to
    agency discretion by law,” 
    5 U.S.C. § 701
    (a)(2). The general
    rule that non-enforcement choices are committed to agency
    discretion by law, see supra n.5, does not mean that the
    choice of announcement procedure for issuing instructions
    for the making of choices is also committed to agency dis-
    cretion by law. And at least because of the developed
    standards under 
    5 U.S.C. § 553
    , this is not a case where
    there is “no meaningful standard” by which to judge the
    process choice. Department of Commerce v. New York, 
    139 S. Ct. 2551
    , 2568 (2019) (considering whether matter was
    “one of those areas traditionally committed to agency dis-
    cretion” and, then, whether there was “no meaningful
    standard” to use the judge the agency action).
    The Supreme Court’s decision in Lincoln supports our
    conclusion about reviewability regarding plaintiffs’ third
    challenge. The Court there held that § 701(a)(2) barred
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    APPLE INC.   v. VIDAL                                     21
    review of the substance of an agency’s choice of how to al-
    locate a lump-sum appropriation, because allocation under
    a lump-sum appropriation was a recognized category of ac-
    tion committed to the agency’s discretion. Lincoln, 
    508 U.S. at
    191–95. But the Court was not asked to and did
    not hold unreviewable, for compliance with 
    5 U.S.C. § 553
    ,
    the agency’s choice not to use notice-and-comment rule-
    making; instead, it decided, on the merits, that § 553 did
    not require notice-and-comment rulemaking for the agency
    decision at issue. Id. at 195–99. The government in Lin-
    coln explained this distinction, stating: “The rulemaking
    provision of the APA, 5 U.S.C. 553, may itself provide ‘law
    to apply’ for reviewing agency procedures, even if there is
    otherwise no jurisdiction to review the substance of an
    agency decision.” Brief for Petitioners, Lincoln, 
    508 U.S. 182
     (No. 91-1833), 
    1992 WL 547219
    , at *10 n.8 (citing
    Story, 
    732 F.2d at 1381, 1384
    ). We conclude that the dis-
    tinction applies here.
    2
    We also conclude that at least Apple has standing to
    press the challenge to the Director’s instructions as invalid
    for want of notice-and-comment rulemaking. We so con-
    clude without aggregating the plaintiffs’ asserted threat-
    ened harms, an approach taken by plaintiffs without
    arguing for its propriety. See, e.g., Summers v. Earth Is-
    land Institute, 
    555 U.S. 488
    , 494–97 (2009) (analyzing in-
    dividual plaintiffs separately); ASARCO Inc. v. Kadish,
    
    490 U.S. 605
    , 615 (1989) (“[T]he doctrine of standing to sue
    is not a kind of gaming device that can be surmounted
    merely by aggregating the allegations of different kinds of
    plaintiffs, each of whom may have claims that are remote
    or speculative taken by themselves.”); Valley Forge Chris-
    tian College v. Americans United for Separation of Church
    & State, Inc., 
    454 U.S. 464
    , 489 (1982) (“The law of aver-
    ages is not a substitute for standing.”). We will focus on
    Apple alone, and our conclusion that it has standing to
    press the remaining challenge permits us to reverse the
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    22                                         APPLE INC.   v. VIDAL
    dismissal and remand for the merits of that challenge to be
    addressed (along with any question about standing of other
    plaintiffs available for decision on remand if necessary).
    See, e.g., Little Sisters of the Poor Saints Peter & Paul Home
    v. Pennsylvania, 
    140 S. Ct. 2367
    , 2379 n.6 (2020); Rumsfeld
    v. Forum for Academic & Institutional Rights, Inc., 
    547 U.S. 47
    , 52 n.2 (2006).
    In reviewing a standing determination made on a mo-
    tion to dismiss a complaint, like the standing determina-
    tion before us in this appeal, we assess standing de novo.
    Ford Motor Co. v. United States, 
    688 F.3d 1319
    , 1323 (Fed.
    Cir. 2012). We ask if the standard at the complaint stage,
    requiring allegations of fact plausibly indicating satisfac-
    tion of the legal requirement, is met. See TransUnion LLC
    v. Ramirez, 
    141 S. Ct. 2190
    , 2208 (2021); Lujan v. Defend-
    ers of Wildlife, 
    504 U.S. 555
    , 560–61 (1992); James v. J2
    Cloud Services, LLC, 
    887 F.3d 1368
    , 1372 (Fed. Cir. 2018).
    We focus on the allegations of the complaint, but, under the
    regional circuit’s law we apply, we may also consider, at
    least, matters of which we may properly take judicial no-
    tice. See Lee v. City of Los Angeles, 
    250 F.3d 668
    , 689–90
    (9th Cir. 2001).
    For a plaintiff to have standing, the plaintiff must show
    (1) an “injury in fact,” (2) “a causal connection between the
    injury and the conduct complained of,” and (3) a likelihood
    that “the injury will be redressed by a favorable decision.”
    Lujan, 
    504 U.S. at
    560–61 (internal quotation marks omit-
    ted). An injury in fact is “a legally protected interest which
    is (a) concrete and particularized” and “(b) actual or immi-
    nent, not conjectural or hypothetical.” 
    Id. at 560
     (internal
    quotation marks omitted). The Court has found an asser-
    tion of future injury insufficient where it “involve[d] a sig-
    nificant degree of guesswork.” Trump v. New York, 
    141 S. Ct. 530
    , 536 (2020). On the other hand, “[a]n allegation of
    future injury may suffice if the threatened injury is cer-
    tainly impending, or there is a substantial risk that the
    harm will occur.” Susan B. Anthony List v. Driehaus, 573
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    APPLE INC.   v. VIDAL                                      
    23 U.S. 149
    , 159 (2014) (internal quotation marks omitted)
    (quoting Clapper v. Amnesty International USA, 
    568 U.S. 398
    , 414 n.5 (2013)); Department of Commerce, 
    139 S. Ct. at 2566
    . Of particular significance for this case, when a
    plaintiff asserts an entitlement to a rulemaking, the re-
    dressability requirement for standing is relaxed: It is
    enough for that element to be met that “there is some pos-
    sibility that the requested relief,” namely, notice-and-com-
    ment rulemaking, would “prompt the [agency] to
    reconsider the decision that allegedly harmed” the plain-
    tiff. Massachusetts v. Environmental Protection Agency,
    
    549 U.S. 497
    , 518 (2007); see Summers, 
    555 U.S. at
    496–97;
    Lujan, 
    504 U.S. at
    572 n.7; Iowa League of Cities v. Envi-
    ronmental Protection Agency, 
    711 F.3d 844
    , 871 (8th Cir.
    2013); Sierra Club v. Environmental Protection Agency, 
    699 F.3d 530
    , 533 (D.C. Cir. 2012).
    Apple is non-speculatively threatened with harm to a
    legally protected interest from the challenged instructions.
    The complaint asserts harm with only brief elaboration.
    See Amended Complaint, ¶¶ 23, 28, Apple, No. 20-cv-
    06128, 
    2021 WL 5232241
    , ECF No. 54; J.A. 1134; J.A. 1136.
    But that is enough in this case. We may take judicial notice
    that Apple is a repeat player, in the relevant respect, on a
    very large scale. On a regular basis, for many years, it has
    been sued for infringement (giving it a concrete stake) and
    then petitioned for an IPR of patent claims at issue in that
    suit. Some of the petitions have been denied—for Apple, at
    least in Fintiv itself—based on the institution instructions
    at issue.
    Given that history, it is far from speculative that this
    sequence will be repeated in the future, considering Apple’s
    size and use of a wide variety of technologies and the real-
    istically perceived advantages of the IPR process, including
    the applicability of a lighter burden of persuasion to prevail
    in challenging a patent claim than the burden applicable
    in district court. See Jibril v. Mayorkas, 
    20 F.4th 804
    , 815
    (D.C. Cir. 2021) (concluding that “extensive” history
    Case: 22-1249    Document: 71      Page: 24    Filed: 03/13/2023
    24                                         APPLE INC.   v. VIDAL
    supporting “future plans” can establish injury in fact); N.B.
    ex rel. Peacock v. District of Columbia, 
    682 F.3d 77
    , 84 (D.C.
    Cir. 2012) (“[A]lthough ‘past . . . conduct does not in itself
    show a present case or controversy regarding injunctive re-
    lief,’ ‘past wrongs’ may serve as ‘evidence bearing on
    whether there is a real and immediate threat of repeated
    injury.’” (cleaned up) (quoting City of Los Angeles v. Lyons,
    
    461 U.S. 95
    , 102 (1983))). It is not unduly conjectural, but
    “the predictable effect” of the instructions, Department of
    Commerce, 
    139 S. Ct. at 2566
    , that the challenged instruc-
    tions, which are plausibly alleged to cause more denials of
    institution than might otherwise occur, will continue caus-
    ing harm in the form of denial of the benefits of IPRs linked
    to the concrete interest possessed by an infringement de-
    fendant—even though Apple cannot specify in advance in-
    dividual IPR requests (filed with an infringement suit
    pending) that will be denied. These facts, we conclude,
    mean that “there is a substantial risk that the harm will
    occur” in the future because of the instructions. Susan B.
    Anthony List, 573 U.S. at 159 (internal quotation marks
    omitted) (quoting Clapper, 
    568 U.S. at
    414 n.5). The injury
    is concrete and legally protected, because of the infringe-
    ment suit, so the injury and causation requirements for
    standing are met.
    The applicable standard for redressability here is also
    met. There is a genuine possibility that the instructions
    would be changed in a way favorable to Apple in a notice-
    and-comment rulemaking. That possibility is confirmed by
    the fact that the Director, in response to comments, an-
    nounced favorable clarifications in the June 2020 Memo.
    For those reasons, we conclude that Apple has standing
    to press the claim that the challenged instructions were
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    APPLE INC.   v. VIDAL                                      25
    improperly put in place without notice-and-comment rule-
    making. 7
    III
    For the foregoing reasons, we affirm the district court’s
    judgment dismissing plaintiffs’ challenges to the Director’s
    instructions as substantively contrary to statute and as ar-
    bitrary and capricious. We reverse the district court’s dis-
    missal for unreviewability of plaintiffs’ challenge to the
    Director’s instructions as having improperly been issued
    without notice-and-comment rulemaking, a challenge that
    we also conclude at least Apple has standing to press. We
    remand for consideration of this one challenge on the mer-
    its.
    The parties shall bear their own costs.
    AFFIRMED IN PART, REVERSED IN PART, AND
    REMANDED
    7   Neither side has suggested mootness of this chal-
    lenged based on the June 2022 Memo or subsequent clari-
    fications, see supra n.4, which, like their predecessors, were
    not put in place through notice-and-comment rulemaking
    (including publication in the Federal Register). A chal-
    lenge might not be mooted by a change in challenged con-
    duct if the alteration is itself subject to the same asserted
    deficiency as its predecessor. See, e.g., Davenport v. Wash-
    ington Education Association, 
    551 U.S. 177
    , 182 n.1 (2007);
    Northeastern Florida Chapter of Associated General Con-
    tractors of America v. City of Jacksonville, 
    508 U.S. 656
    ,
    661–63 (1993); 13C Charles A. Wright & Arthur R. Miller,
    Federal Practice and Procedure § 3533.6 at n.63 (3d ed.
    2022). The post-Fintiv clarifications do not appear to moot
    plaintiffs’ third challenge, the only one remaining after our
    unreviewability holding regarding the first two challenges.
    Any further exploration of the effect of the post-Fintiv clar-
    ifications is left to the district court on remand.