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by on December 23, 2025

AAI Asks D.C. Circuit to Stop the “Bleeding” of Plus Factors in Section 1 Cases (In re Rail Freight Fuel Surcharge Antitrust Litig.)

On December 19, 2025, the American Antitrust Institute (AAI) filed an amicus brief in In re Rail Freight Fuel Surcharge Antitrust Litigation (No. I), MDL No. 1869, asking the D.C. Circuit to faithfully apply the Supreme Court’s framework for assessing whether a cartel agreement can be inferred from circumstantial evidence.

Because most price-fixing is done in secret, plaintiffs in Section 1 cases under the Sherman Act rarely can adduce direct evidence of a cartel agreement. When they must rely instead on an inference of agreement from circumstantial evidence, the Supreme Court has created a two-part framework for assessing whether such an inference is permissible. The plaintiffs must plead and prove (1) parallel conduct and (2) so-called “plus factors,” which can be any additional evidence that is suggestive of a meeting of the minds in an unlawful arrangement.

In Rail Freight, the plaintiffs are railroad shippers who allege that the nation’s four largest railroad companies—BNSF, CSX, Norfolk Southern, and Union Pacific, which together control about 90% of the U.S. freight railroad market—conspired to raise prices for rail freight shipments by imposing aggressive universal fuel surcharges on customers. The district court granted summary judgment for the defendants, holding that the plaintiffs failed to make a threshold showing that the defendants even acted in a parallel fashion, let alone the requisite showing of both parallel conduct and plus factors. The court reasoned that in an oligopoly market, where “conscious parallelism” sometimes can explain parallel price increases that are also consistent with an unlawful agreement, the plaintiffs must plead and prove “unusual parallel conduct,” meaning conduct that could not be explained by the phenomenon of oligopolistic interdependence.

The court believed that, in this sense, plus-factor analysis can “bleed into” the parallel conduct inquiry. Here, the court held, the plaintiffs failed to offer evidence that accounted for differences in the defendants’ specific fuel surcharge formulas and the timing in which they adopted them. Accordingly, the plaintiffs did not satisfy the threshold parallel conduct requirement.

In its brief, AAI explains that the district court’s approach alters and distorts the Supreme Court’s framework by conflating its two parts. Instead of requiring parallel conduct and plus factors, the district court required parallel conduct that is “unusual” in its parallelism. Such an approach smuggles a narrow subset of timing and simultaneity plus factors into the threshold requirement, raising the plaintiffs’ burden, and invites courts to ignore all other plus factors that fall outside the subset. The effect is to convert certain plus factors into elements, which  prevents plus-factor analysis from serving as the flexible, holistic, and context-dependent indicator of collusion that the Supreme Court intended it to be.

AAI also explains that the district court’s approach is flawed economically and as a matter of competition policy because it wrongly assumes that supracompetitive prices in an oligopoly can always be explained by oligopolistic interdependence. Such an assumption tips the scale against a finding of collusion in the very markets in which collusion is most likely to occur and in which the cost of overdeterrence is comparatively low.

The brief was written by AAI President Randy Stutz, AAI Vice President and Director of Legal Advocacy Kathleen Bradish, and AAI Senior Counsel David O. Fisher.

Read the full brief: AAI Amicus Brief (In re Rail Freight Fuel Surcharge Antitrust Litig.)

by on December 18, 2025

Taking an “Extra” Look at Addressing Monopolization: A Conversation with Jennifer Sturiale

In this episode of Ruled by Reason, the American Antitrust Institute’s (AAI) Vice President and Director of Legal Advocacy Kathleen Bradish speaks with Professor Jennifer Sturiale about how her recent work attempts to address the persistent gap between public concern over monopolies and the limits of current Section 2 enforcement.

Sturiale notes at the outset that her work originates in a fundamental, ongoing issue: while antitrust law is, by its nature, deliberately narrow—designed not to punish firms that acquire monopoly power through “superior business acumen” or historic accident—this leaves significant harms unaddressed. In her view, monopoly power is harmful regardless of how it is acquired, not only because of price, output, or quality effects, but also because monopolists amass outsized resources that can distort politics, media, litigation, and democratic processes more broadly. (2:37)

Sturiale then describes how her recent scholarship explores an unconventional alternative: using federal or state eminent domain powers—what she calls an “extra-antitrust” approach—to address market concentration. (5:49) Drawing on Supreme Court takings jurisprudence, particularly Hawaii Housing Authority v. Midkiff, she explains that the Court has interpreted “public use” broadly to include correcting economic distortions such as oligopoly. (9:12) She argues that this precedent suggests governments could, in principle, condemn property to break up monopolized or highly concentrated markets, provided just compensation is paid. Her illustrative example involves the highly concentrated dialysis market, where states could use eminent domain to enable new entry and competition without proving exclusionary conduct under traditional antitrust standards. (13:45)

A central advantage of this approach, Sturiale argues, is that it bypasses many of the evidentiary burdens that make Section 2 cases slow, costly, and uncertain—such as market definition and proof of anticompetitive conduct. (29:35) Legislatures, rather than courts alone, could determine that a market is excessively concentrated based on hearings, expert testimony, and consumer experience. Compensation requirements would serve as an important limiting principle, both restraining overuse of eminent domain and preserving incentives to innovate, since firms could be compensated for lost profits rather than punished through treble damages. (23:55)

At the same time, Sturiale is clear that her proposal is both a serious thought experiment and a critique. Political will, lobbying by powerful firms, valuation difficulties, and constitutional constraints—especially in national or IP-driven markets—pose real obstacles. (32:66) Still, she suggests that state-level experimentation in local markets could demonstrate feasibility and help democratize responses to market power. (46:35) Ultimately, the discussion reframes monopolization remedies not as solely an antitrust problem, but as part of a broader set of tools available to democratic governments confronting durable concentration in modern markets.

GUEST

Jennifer Sturiale teaches Civil Procedure and Property as an Associate Professor of Law at Widener University Delaware School of Law. Her scholarship focuses on issues of civil procedure, complex litigation, intellectual property, antitrust, and issues at the intersection of these disciplines. Her scholarship has been published in the Alabama Law Review, the Utah Law Review, and the University of Illinois Law Review, among others.

by on December 5, 2025

AAI’s Fisher Publishes Article on Algorithmic Pricing in ABA Antitrust Magazine

AAI Senior Counsel David O. Fisher authored an article titled “Tacit Agreements to Collude: Enforcing Section 1 of the Sherman Act in the Age of Algorithms,” that was featured in the Fall 2025 issue of the ABA’s Antitrust Magazine.

In the article, Fisher argues that, in the Age of Algorithms, tacit and express collusion will proliferate unless we adopt our application of  antitrust law accordingly. Specifically, Fisher argues for a holistic and flexible application of plus factors that reflects the ways in which pricing algorithms allow for stable tacit agreements. He also argues that algorithmic pricing should prompt us to rehabilitate tacit agreement as a theory of Section 1 liability and to consider expressly prohibiting algorithmic tacit collusion.

Read the article: Tacit Agreements to Collude: Enforcing Section 1 of the Sherman Act in the Age of Algorithms

by on November 24, 2025

AAI Warns Third Circuit About the Dangers of Entertaining Meritless Class Certification Challenges that Undermine Anti-Cartel Enforcement (In re Generic Pharmaceuticals Pricing Antitrust Litig.)

On November 21, 2025, the American Antitrust Institute (AAI) submitted an amicus brief to the Third Circuit in In re Generic Pharmaceuticals Pricing Antitrust Litigation, No. 25-2220, urging the court to affirm the district court’s order certifying a class of end-payers. The case is one of the bellwether actions in a sprawling MDL involving sweeping price-fixing allegations affecting a large number of generic drugs during the early 2010s. Classes were certified by the district court, after which some defendants settled. The remaining defendants challenged class certification in the Third Circuit, arguing that the complexity of pharmaceutical payment systems raised questions of predominance, ascertainability and superiority that made certification of end-payer classes inappropriate.

AAI’s brief warns the Third Circuit against strategic class certification challenges that allow antitrust defendants to avoid compensating victims of criminal, per se illegal conduct. AAI points out that such challenges, if successful in blocking the only viable pathway to civil relief, can have damaging effects across the interconnected U.S. antitrust enforcement system. Public and private enforcement depend on one another, both as a matter of historical design and current policy, which relies on private damage actions to provide victims of criminal antitrust violations with restitution.

AAI’s brief argues that private enforcement cannot fulfill its role if overly difficult proceedings make it too burdensome for plaintiffs to bring class actions, as expense and diffuse damages mean many private antitrust cases would never be brought without the class device. In the case of end-payers, AAI notes that artificially limiting class actions has the perverse effect of denying compensation to the only victims in a conspiracy who assuredly cannot pass on their injury. Moreover, it threatens to undermine the core purposes of the so-called Illinois Brick repealer statutes that most states have passed to ensure their end-purchaser citizens are compensated for antitrust violations.

AAI warns that defendants’ effort to overturn class certification is a strategic attempt to shield ill-gotten gains obtained through criminal conduct by exploiting the very complexity they relied on to conceal the conspiracy in the first place. The importance of avoiding a deterrence gap for such conduct, the brief explains, is underscored in this case by the undeniable harms felt at the end of the pharmaceutical supply chain. AAI cites examples in which patients dependent on the price-fixed drugs faced massive price spikes—sometimes exceeding 1,200%—forcing them to delay treatment, switch to inferior alternatives, or forego medication altogether.

The brief was written by AAI Vice President and Director of Legal Advocacy Kathleen Bradish.

Read the full brief: AAI Amicus Brief (In re Generic Pharmaceuticals Pricing Antitrust Litigation)

by on November 24, 2025

The Three-Legged Stool of U.S. Antitrust Enforcement: A Conversation with Michael Kades

In this episode of Ruled by Reason, AAI President Randy Stutz talks with antitrust thought leader Michael Kades about the latest developments at the intersection of federal, state and private antitrust enforcement.

The conversation begins with a discussion of the strengths and weaknesses of federal, state and private enforcers in the current enforcement climate (5:11). It then moves to the promise of “public entity litigation,” in which private counsel represent federal, state or local government entities in bringing enforcement actions they lack the resources to bring on their own (8:45).

Stutz and Kades then discuss strategic complexities and possible “force multipliers” when private counsel represent a governmental agency (11:31), including with respect to bringing cases where the agency’s main priority is to develop antitrust doctrine or to shift risk when high-reward cases require large upfront resource commitments (13:33). They also discuss federal claims under Section 4A of the Clayton Act—which allows the government to recover treble damages in its capacity as an injured purchaser—and why such claims may be under-utilized (16:10).   

The conversation then shifts to merger enforcement, with a focus on the role of states and private plaintiffs (20:22). Among other things, Kades identifies categories of mergers where states may have an added advantage in merger enforcement (25:14). He also discusses how policy preferences and subject-matter emphases at the federal level can spur state and private enforcers to fill gaps in federal attention, though he cautions against trying to deduce policy preferences and attention levels solely from counting statistics (29:48).

The conversation concludes with a discussion of allegations that federal enforcement has become “politicized” during the Biden and Trump administrations, and the role of the states in diffusing certain criticisms (33:13).

GUEST

Michael Kades is a Partner at Nachawati Law Group, where he recently launched a private antitrust practice focused on Public Entity Litigation. He previously served as Deputy Assistant Attorney General for Civil Enforcement at the Antitrust Division of the Department of Justice, as Director of Markets and Competition Policy at the Washington Center for Equitable Growth, and as antitrust counsel to Sen. Amy Klobuchar on detail from the Federal Trade Commission, where he spent 20 years as an attorney investigating and litigating antitrust actions.

by on November 21, 2025

AAI Urges Ninth Circuit to Apply Sherman Act to Transnational Market Division Agreements (WAIPU v. NHL)

On November 19, 2025, the American Antitrust Institute (AAI) filed an amicus brief supporting plaintiffs before the Ninth Circuit in World Association of Icehockey Players Unions North America Division (“WAIPU”) v. National Hockey League (“NHL”), No. 25-3929.

The case arises out of the NHL’s agreement with the Canadian Hockey League (“CHL”) and its member leagues to divide up the North American market for junior hockey players into three exclusive geographic territories, each spanning portions of both the United States and Canada. The plaintiffs, junior major hockey players and the labor organizations that represent them, alleged that the agreement violates Section 1 of the Sherman Act. After dismissing some defendants for lack of personal jurisdiction, the U.S. District Court for the Western District of Washington dismissed the claims of players recruited in Canada to play for Canadian teams as barred by the Foreign Trade Antitrust Improvements Act (“FTAIA”). It then dismissed all of the remaining claims—those of players who were either recruited in the United States or played for teams in the United States—on the basis of international comity.

In its amicus brief supporting plaintiffs and reversal, AAI argues that transnational market allocation agreements in markets that include U.S. territory necessarily fall under the FTAIA’s domestic-effects exception, which applies the Sherman Act to foreign conduct that has a “direct, substantial, and reasonably foreseeable effect” on domestic commerce if that effect “gives rise to” a foreign injury. Under Ninth Circuit precedent, a foreign plaintiff must show a proximate—and not merely but-for—causal connection between its injury and the domestic effects of defendants’ conduct. Here, the direct effect of defendants’ market allocation agreement was to prevent U.S. teams from recruiting North American junior hockey players outside of their allocated territory, and the Canadian players’ injuries were proximately caused by that effect, which left them unable to market their services to many U.S. teams.

AAI also argued that the principles of international comity support exercising jurisdiction when failing to do so would leave U.S. antitrust victims without legal recourse for violations of U.S. antitrust law. Pointing to a Canadian court opinion dismissing parallel claims on the merits, the plaintiffs argued that Canadian law does not provide them any relief. If that is true, AAI argued, then declining to exercise jurisdiction over the U.S. players’ claims on the basis of comity would leave those players without any recourse for a violation of U.S. antitrust law. Considering the U.S.’s strong interest in deterring anticompetitive conduct which harms U.S. markets, the principles of comity support exercising jurisdiction in such a case.

The brief was written by AAI Senior Counsel David O. Fisher, with assistance from AAI President Randy Stutz.

Read the full brief: AAI Amicus Brief in WAIPU v. NHL

by on November 19, 2025

Commentary by Stutz: Competition, Market Failure, and Doublethink in News Markets

In this essay, American Antitrust Institute (AAI) President Randy Stutz argues that the Trump administration’s competition advocacy and enforcement to promote viewpoint diversity in digital news markets conflict with its regulatory interventions that mandate unilateral increases in the supply of viewpoint diversity in the same markets. Even if the administration’s actions pass muster under the First Amendment, it is unlikely to achieve any of its goals because it has failed to formulate a coherent policy.

The essay is reprinted with permission from Concurrences. It originally appeared in Concurrences’ November On-Topic series, Content Moderation and Antitrust. View the Original Source.

Abstract:

Viewpoint diversity in news publishing is either a public good—non-excludable and non-rivalrous and thus underproduced absent regulatory intervention—or a private good—such that publishers’ reputations, advertising, or other factors enable competitive market forces to meet consumer demand. Depending on which view is adopted as accurate, the proper approach to ensuring sufficient viewpoint diversity will differ. In its zeal to address a perceived imbalance of viewpoints in news markets, the Trump Administration has not paused to choose one view or the other. It has deployed both market-based and regulatory approaches in the same news markets simultaneously, all but ensuring that neither will work. Incoherent policy has led to self-defeating actions that work at cross-purposes with one another. Thus, the administration’s rhetorical support for greater viewpoint diversity is unlikely to lead to any meaningful benefits.

Read the full essay: Competition, Market Failure, and Doublethink in News Markets

by on November 17, 2025

AAI and COSAL Urge Supreme Court to Uphold FTC Act’s For-Cause Removal Provision (Trump v. Slaughter)

On November 14, 2025, the American Antitrust Institute (AAI) and the Committee to Support the Antitrust Laws (COSAL) filed an amicus brief in the Supreme Court in Trump v. Slaughter, No. 25-332.

In March, President Trump fired FTC Commissioner Rebecca Kelly Slaughter without cause, in knowing violation of Section 1 of the FTC Act, which limits such firings to instances of “inefficiency, neglect of duty, or malfeasance in office.” Slaughter sued, arguing that the firing directly contravenes the statutory provision and the Supreme Court’s 1935 decision upholding it in Humphrey’s Executor v. United States, 295 U.S. 602. The D.C. district court agreed, ordering Slaughter’s reinstatement, and the President appealed. Before the D.C. Circuit heard the appeal, the Supreme Court voted 6-3 to issue a writ of certiorari before judgment, certifying the question of whether the FTC Act’s for-cause removal provision violates the separation of powers and, if so, whether Humphrey’s Executor should be overruled.

In their amicus brief urging the Court to uphold for-cause removal, AAI and COSAL argue that the Constitution does not give the President unchecked removal power. Article II’s language vesting the Executive Power in the President and directing him to “take Care that the Laws be faithfully executed” were not understood at the time of the founding or in the 250 years since to grant that power. Furthermore, the President has significant control of the executive functions of the FTC through his sole authority to designate and de-designate the Chair. He also dictates the FTC’s litigation strategy and steers foreign engagement through his control of the Department of Justice and the State Department.

AAI and COSAL also argue that the for-cause removal provision is a critical feature of Congress’s design of the FTC as a consensus-driven body that carries out broad, expertise-based functions, assists Congress and the courts, and supplements antitrust enforcement by the Executive. Insulating its expertise-based functions from direct political pressure serves to protect individual liberties, foster stable decision-making, and facilitate sound antitrust policy. For these reasons, the FTC Act’s removal provisions have become the basis for a broad international consensus on agency design principles, and invalidating them would harm U.S. consumers and businesses at home and abroad.

The brief was co-written by COSAL Vice President and Garwin Gerstein & Fisher LLP Partner Deborah Elman, AAI President Randy Stutz, AAI Vice President and Director of Legal Advocacy Kathleen Bradish, and AAI Senior Counsel David O. Fisher.

Read the full brief: AAI and COSAL Amicus Brief in Trump vs. Slaughter

by on October 30, 2025

Class Action Issues Update Fall 2025

The American Antitrust Institute (AAI) seeks to preserve the effectiveness of antitrust class actions as a central and vital component of private antitrust enforcement. As part of its efforts, AAI issues periodic updates on developments in the courts and elsewhere that may affect this important device for protecting competition, consumers, and workers. This update covers developments since our Fall 2024 update and includes the following new decisions:

  • Uninjured Class Members and Article III Standing at Class Certification: Dee’s Inc. v. Inmar, Inc., 127 F.4th 925 (4th Cir. 2025); Wilson v. Centene Mgmt. Co., L.L.C., 144 F.4th 780 (5th Cir. 2025); Speerly v. GM, 143 F.4th 306 (6th Cir. 2025); Lab. Corp. of Am. Holdings v. Davis, 145 S. Ct. 1608 (2025)
  • Daubert at Class Certification: In re Nissan N. Am., 122 F.4th 239 (6th Cir. 2024)
  • Mandatory Arbitration Agreements: Davitashvili v. Grubhub, 131 F.4th 109 (2d Cir. 2025); Flores v. N.Y. Football Giants, 150 F.4th 172 (2d Cir. 2025); Heckman v. Live Nation Ent., 120 F.4th 670 (9th Cir. 2024) ; Brock v. Flowers Foods, 121 F.4th 753 (10th Cir. 2024); Lackie Drug Store v. OptumRx, 143 F.4th 985 (8th Cir. 2025)
  • Attorney’s Fees: In re Wawa Data Sec. Litig., 141 F.4th 456 (3d Cir. 2025); In re Broiler Chicken Antitrust Litig., 142 F.4th 568 (7th Cir. 2025); Kurtz v. Kimberly-Clark Corp., 142 F.4th 112 (2d Cir. 2025); Paredes v. Zen Nails Studio, 134 F.4th 750 (4th Cir. 2025); Morrow v. Jones, 2025 U.S. App. LEXIS 14230 (5th Cir. Jun. 10, 2025)

I. Uninjured Class Members and Article III Standing at Class Certification

We have long been following the recurring debate in the federal courts over the rules and standards that govern the certification of classes that may contain some class members who were not injured by the defendant’s conduct.

The Second and Eighth Circuits have adopted rules against classes that contain uninjured class members. The Second Circuit has framed the issue as a question of standing, holding that “no class may be certified that contains members lacking Article III standing,” and requiring that a class “be defined in such a way that anyone within it would have standing.”[1] Basing its analysis not on Article III but on the predominance requirement of Rule 23(b)(3), the Eighth Circuit has denied class certification where the “individual inquiries” necessary to determine which class members were uninjured would “overwhelm questions common to the class.”[2]

Also relying on Rule 23, the First and D.C. Circuits have indicated that a district court should not certify a class if uninjured class members exceed a de minimis number,[3] while the Seventh, Ninth and Eleventh Circuits have stated that certification is imperiled only when the number of uninjured class members is “great.”[4] Reviewing the issue in the context of an antitrust class action, the Tenth Circuit has affirmed that certification of an issue class on the question of antitrust liability under Rule 23(c)(4) is appropriate even in the presence of an untold number of uninjured class members, as damages determinations in such cases are left for individual determination.[5]

The Ninth and Eleventh Circuits have squarely held that the presence of uninjured class members does not present an Article III standing issue. As explained in our Spring 2020 update, the Eleventh Circuit in Cordoba v. DIRECTV, 942 F.3d 1259 (11th Cir. 2019), held that, although individualized questions of standing can be relevant to the predominance inquiry, the presence of uninjured class members does not defeat class certification on the grounds that the allegedly uninjured members lack Article III standing.

The Ninth Circuit later agreed, holding in Ramirez v. TransUnion, 951 F.3d 1008 (9th Cir. 2020)—which dealt with the similar question of standing at the money damages stage of a TCPA class action—that every class member must have Article III standing “at the final judgment stage of a class action in order to recover monetary damages,” but it reiterated its previous holdings that “only the representative plaintiff need allege standing at the motion to dismiss and class certification stages . . . and even at the final judgment stage in class actions involving only injunctive relief.” A sharply divided Supreme Court subsequently reversed on the separate question of whether each plaintiff had standing in that case, 594 U.S. 413 (2021). In doing so, the Court held that “every class member must have Article III standing to recover individual damages,” explicitly declining to reach “the distinct question whether every class member must demonstrate standing before a court certifies a class.”

As we reported in our Fall 2016 update, the Supreme Court did not squarely reach the issue in either Tyson Foods v. Bouaphakeo, 577 U.S. 442 (2016) or Spokeo v. Robbins, 578 U.S. 330 (2016), although both opinions included language suggesting the presence of uninjured class members does not necessarily defeat class certification.

AAI has been actively involved in this issue. As we wrote in our Summer 2015 update, AAI first briefed the issue In re Nexium Antitrust Litig., 777 F.3d 9 (1st Cir. 2015), in which the First Circuit recognized that “objections to certifying a class including uninjured members run counter to fundamental class action policies” because “excluding all uninjured class members at the certification stage is almost impossible in many cases, given the inappropriateness of certifying what is known as a ‘fail-safe class’—a class defined in terms of the legal injury.” As we discussed in our Fall 2018 update, the First Circuit narrowly cabined Nexium in its subsequent ruling in In re Asacol, 907 F.3d 42 (1st Cir. 2018), in which it held that, without a classwide method to sort among injured and uninjured class members, individual questions may predominate over common questions absent unrebutted evidence of individual injury that renders the class sufficiently manageable.

As we wrote in our Spring/Summer 2022 update, we also briefed the issue before an en banc panel of the Ninth Circuit, which held in Olean Wholesale Grocery Coop. v. Bumble Bee Foods, 31 F.4th 651 (9th Cir. 2022), that “courts must apply Rule 23(b)(3) on a case-by-case basis, rather than rely on a per se rule that a class cannot be certified if it includes more than a de minimis number of uninjured class members,” and that the proper inquiry is whether the plaintiffs’ evidence is capable of establishing antitrust impact on a classwide basis.

Courts have also grappled with the question of whether a defendant’s due process rights are implicated by a class that may include uninjured class members. As we wrote in our Spring 2020 update, the Seventh Circuit held in Physicians Healthsource v. A-S Medication Sols., 950 F.3d 959 (7th Cir. 2020), that the defendant’s due process rights were indeed implicated, but only in the unique context of a claim under the Telephone Consumer Protection Act (TCPA) because unclaimed money can revert to the defendant in TCPA cases. In its amicus briefs on this issue, AAI has argued that, in cases where damages are calculated as the total sum of overcharges—which is true of most antitrust cases—a defendant does not have a due process interest in challenging the inclusion of a class member that may have suffered no damages.

Earlier this year, the Fourth Circuit addressed the Article III standing issue in Mr. Dee’s Inc. v. Inmar, Inc., 127 F.4th 925 (4th Cir. 2025), in which the court affirmed the district court’s refusal to certify a class of manufacturers who allegedly overpaid for coupon processing services due to the defendants’ price-fixing conspiracy because nearly a third of the class members did not pay higher prices. After finding that the high share of uninjured class members presented a predominance problem, the court relied on the Supreme Court’s opinion in TransUnion to conclude that “such a high share of uninjured members also raises Article III standing concerns.”

The issue of uninjured class members is arguably analogous to the issue of “disjuncture,” which focuses on whether a disparity between the named plaintiffs’ injuries and the injuries of prospective class members presents standing issues under Article III. In assessing disjuncture, the First, Third, Sixth, and Ninth Circuits employ the “class-certification approach,” which requires only that the named plaintiffs have standing,[6] while the Second and Eleventh Circuits have adopted the more intensive “standing approach,” which requires that the named plaintiff must have suffered harms that are analogous to those suffered by the rest of the class.[7]

Earlier this year, the Fifth Circuit joined the First, Third, Sixth, and Ninth Circuits in adopting the class-certification approach. In Wilson v. Centene Mgmt. Co., 144 F.4th 780 (5th Cir. 2025), the plaintiff health insurance purchasers alleged that they overpaid for premiums because the defendant overrepresented the size of its insurance network. The district court denied class certification on the basis that the named plaintiffs failed to establish that the class members would have paid lower premiums if the defendant had adequately represented the size of its network. Framing the issue as “the manner and degree of proof required to establish injury-in-fact at the class-certification stage,” the Fifth Circuit vacated and remanded with instructions to apply the class-certification approach, reasoning that the standing approach “prematurely and unnecessarily muddies the waters for the threshold constitutional issue of justiciability.”

Although the Sixth Circuit has squarely adopted the standing approach, a recent concurrence indicates some disagreement among judges on this point. In Speerly v. GM, 143 F.4th 306 (6th Cir. 2025), an en banc panel of the Sixth Circuit vacated the district court’s certification of 26 state-wide subclasses in an automobile defect case for failure to satisfy Rule 23’s commonality and predominance requirements. Judges Thamar and Nalbandian each wrote separate concurrences on the issue of Article III standing in class cases. Judge Nalbandian wrote that the court “should have resolved the standing question by holding that a class cannot be certified with members who have not suffered an injury in fact.” Disagreeing, Judge Thamar wrote that “[c]ourts should look to Rule 23, not Article III, in determining whether a named plaintiff may represent a class of members who assert different injuries—or no injury at all.”

This summer, the Supreme Court was poised to reach the role of Article III and predominance at class certification in Lab. Corp. of Am. Holdings (“Labcorp”) v. Davis, 145 S. Ct. 1608 (2025). Petitioners in Labcorp challenged a Ninth Circuit order certifying a class of blind patients seeking statutory damages under the ADA and California state law on the basis that the class contained uninjured class members, which they contended both violated Article III and prevented plaintiffs from satisfying Rule 23’s predominance requirement. The Court had granted certiorari on the question of “[w]hether a federal court may certify a class action pursuant to Federal Rule of Civil Procedure 23(b)(3) when some members of the proposed class lack any Article III Injury.”

AAI submitted an amicus brief explaining, among other things, that Article III injury can be a common question that supports a finding of predominance, that Labcorp elided important differences in the standards for establishing Article III injury and for establishing antitrust injury on the merits, and that, in antitrust cases, the presence of uninjured class members usually does not alter the amount of damages. But the Court did not reach the merits. After oral argument—at which it became clear that the class certification order at issue had been superseded below and was no longer in effect—the Court dismissed certiorari as improvidently granted.

Justice Kavanaugh dissented, writing that he would have reached the merits and would have held that “federal courts may not certify a damages class pursuant to Rule 23 when the class includes both injured and uninjured class members.” In his reasoning, Justice Kavanaugh mentioned only the predominance requirement and did not address Article III standing; he based his view on the risk that classes that are “overinflated” with uninjured class members “raise the stakes for businesses that are the targets of class actions,” allowing “coerced settlements” which “substantially raise the costs of doing business.”

Justice Kavanaugh’s dissent in Labcorp and the ongoing circuit splits suggest that the issue of classes containing uninjured members and other issues related to Rule 23’s relationship to Article III are likely to be raised in the Court again.

II. Daubert at Class Certification 

When plaintiffs rely on expert testimony at the class certification stage, courts are split as to whether a court should perform a full Daubert analysis of the expert testimony or instead apply a tailored approach specific to the “rigorous analysis” required to satisfy Rule 23. In antitrust class actions, plaintiffs often rely on expert testimony to establish that common questions will predominate over individualized questions when they attempt to prove impact and damages at trial.

Since at least 2015, the Third, Seventh, and Eleventh Circuits have held that Daubert applies in full at class certification.[8] Because Rule 23 must be satisfied with admissible evidence, they reason, courts may not certify a class without first resolving disputes about the reliability of expert testimony that a plaintiff uses to support certification. In our Spring/Summer 2021 update, we reported that the Fifth Circuit joined these courts, holding in Prantil v. Arkema Inc., 986 F.3d 570 (5th Cir. 2021), that “the Daubert hurdle must be cleared when scientific evidence is relevant to the decision to certify.”

In contrast, the Eighth and Ninth Circuits have held that a plaintiff need not clear the Daubert hurdle until after class certification.[9] These courts reason that a plaintiff’s class-certification evidence need not be admissible, as certification is not outcome-determinative and is often decided when merits discovery is incomplete, and that the purpose of Daubert—preventing unreliable evidence from swaying a jury—is not yet relevant. Under this approach, a court does not err by either conducting a “focused Daubert analysis” to determine the persuasiveness of expert testimony or by ruling on a Daubert challenge after class certification.[10]

Since our last update, the Sixth Circuit has joined the Third, Seventh, and Eleventh Circuits in In re Nissan N. Am., 122 F.4th 239 (6th Cir. 2024). Plaintiffs from 10 states sought to certify a class of drivers of Nissan cars with an allegedly defective automatic braking system. The district court certified the class without ruling on Nissan’s Daubert challenge to the drivers’ expert testimony that each model in the class had the same defect. The Sixth Circuit reversed, holding that, if challenged testimony is “material” to a class certification motion, the district court must demonstrate the expert’s credibility under Daubert. In doing so, it explicitly rejected plaintiffs’ arguments that the purpose of Daubert is to keep unreliable evidence from swaying a jury, reasoning that class certification is “a fact-based inquiry” and Rule 702—which Daubert interpreted—“does not distinguish between jury and bench trials.”

III. Mandatory Arbitration Agreements 

We have long been following the antitrust implications of mandatory arbitration agreements in adhesion contracts. Mandatory arbitration agreements often include forced class action waivers that may prevent class litigation and class arbitration. In our Summer 2015 update, we examined the impact of Am. Express Co. v. Italian Colors Rest., 570 U.S. 228 (2013), in which the Supreme Court instructed lower courts to “rigorously enforce arbitration agreements according to their terms,” even when that meant forcing federal antitrust plaintiffs into individual arbitrations that would make their claims prohibitively costly.

This spring, the Second Circuit ruled that an arbitration agreement between antitrust plaintiffs and defendants did not bar the plaintiffs’ class claims because there was an insufficient nexus between the arbitration agreement and the claims. In Davitashvili v. Grubhub, 131 F.4th 109 (2d Cir. 2025), the plaintiff diners alleged that no-price-competition clauses used by food-delivery platforms Grubhub, Postmates, and Uber—under which restaurants agree not to sell meals at lower prices off the platforms—violate federal and state antitrust laws. Relying on Italian Colors, Grubhub moved to compel arbitration of claims brought by plaintiffs who used its platform, the terms of which require arbitration of claims arising out of users’ “access and use” of the platform. The district court denied the motion, finding that the arbitration agreements lacked any nexus to plaintiffs’ claims.

A divided panel of the Second Circuit affirmed. In an opinion authored by Judge Cabranes and joined in full by Judge Pérez, the majority found that, because plaintiffs allege that they pay higher prices when ordering from other platforms and restaurants due to Grubhub’s agreements with restaurants, their claims do not “arise out of” their use of Grubhub under the Federal Arbitration Act (“FAA”). In a separate opinion concurring in part but dissenting on this point, Judge Sullivan agreed that a defendant may not compel arbitration of claims that are “completely unrelated” to the underlying transaction in which the arbitration agreement was made. But he considered the FAA’s “arising out of” language to be satisfied because plaintiffs’ “use of Grubhub’s platform is what gave Grubhub the market power to commit the alleged antitrust violations.” The panel unanimously agreed that plaintiffs’ claims against Postmates and Uber must be sent to an arbitrator because their arbitration provisions, unlike Grubhub’s arbitration provision, delegated the threshold question of arbitrability to the arbitrator rather than the court.

Italian Colors dealt with the judge-made “effective vindication” exception to the FAA, which the Court first recognized in Mitsubishi Motors Corp. v. Soler Chrysler-Plymouth, 473 U.S. 614 (1985), and which establishes that even FAA-protected arbitration agreements are subject to invalidation when they operate as a prospective waiver of a party’s right to pursue statutory remedies. Although it held in Italian Colors that an antitrust plaintiff cannot invoke the exception to invalidate a class-action waiver merely because the costs of individually arbitrating a federal statutory claim exceeded its potential recovery, the Court did not invalidate the exception, and a plaintiff can still challenge an arbitration provision under Mitsubishi if it prevents them from pursuing statutory remedies. Earlier this year, the Second Circuit in Flores v. N.Y. Football Giants, 150 F.4th 172 (2d Cir. 2025), invalidated a professional football player’s arbitration agreement with the NFL under the effective-vindication exception after finding that it required him to submit his claims to the “unilateral discretion” of the NFL Commissioner, without providing an independent arbitral forum or a process for bilateral dispute resolution.

We have also been following cases addressing preemption of the FAA under state law. The general rule, adopted by the Supreme Court in AT&T Mobility v. Concepcion, 563 U.S. 333 (2011), is that the FAA preempts any state law that “stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress” in passing the FAA. Concepcion dealt with the California Supreme Court’s decision in Discover Bank v. Superior Court, 113 P.3d 1100 (Cal. 2005), which held that class action waivers in consumer contracts of adhesion are unconscionable under California law. The Court has since interpreted Concepcion expansively. In our Spring 2016 update, for example, we discussed DIRECTV v. Imburgia, 136 S. Ct. 463 (2015), in which the Court enforced an arbitration agreement that expressly incorporated California law, which, under Discover Bank, would have barred enforcement at the time of the contract but which was subsequently held preempted in Concepcion.

Notwithstanding Concepcion, courts have sometimes found class-action waivers in mandatory arbitration clauses to be invalid under state law. In our Fall 2020 update, we reported on Waithaka v. Amazon.com, 966 F.3d 10 (1st Cir. 2020), in which the First Circuit, upon finding that the plaintiffs were excluded from the FAA’s coverage, held that the statutory right to proceed as a class articulated in the employment statutes under scrutiny “represent[s] the fundamental public policy of Massachusetts” and that the class action waiver was therefore invalid under state law. The Supreme Court later denied a petition for certiorari of that opinion.

Last fall, the Ninth Circuit held in Heckman v. Live Nation Ent., 120 F.4th 670 (9th Cir. 2024), that the FAA did not preempt California unconscionability law as applied to a mass-arbitration agreement, invalidated the agreement as unconscionable, and allowed plaintiffs to proceed with their antitrust class action. The plaintiffs bought tickets to events promoted by Live Nation and sold through Ticketmaster and, in doing so, agreed to bring any claims against them in a mass arbitration. The district court denied defendants’ motion to compel arbitration in the plaintiffs’ antitrust case, finding that the mass-arbitration agreement was procedurally and substantively unconscionable as a matter of California law.

The Ninth Circuit agreed. First, as a matter of procedural unconscionability, defendants’ dominance in the live entertainment ticket market meant that plaintiffs had little choice but to purchase tickets from them. Second, the agreements’ terms were materially misleading and permitted unilateral and retroactive changes without notice. Finally, the mass arbitration rules were “so dense, convoluted and internally contradictory to be borderline unintelligible.” The court also found the mass-arbitration rules substantively unconscionable because they made bellwether decisions binding on all other claimants without notice or an opportunity to be heard, failed to provide a right to discovery, and gave defendants—but not plaintiffs—a right to appeal.

As an alternative and independent basis for affirming the district court’s decision, the Ninth Circuit held that the FAA did not preempt application of the Discover Bank rule to the mass-arbitration agreement because it required classwide, rather than bilateral, arbitration. Distinguishing Concepcion, the court concluded that “Congress did not have class-wide arbitration in mind when it passed the FAA,” since “[c]lass-wide arbitration did not exist in 1925” when the FAA was passed, and “FAA precedents treat bilateral arbitration as the prototype of the individualized and informal form of arbitration protected from undue state interference by the FAA.” Accordingly, it concluded that the application of California law to the mass-arbitration rules was not preempted by the FAA.” The U.S. Supreme Court subsequently denied a petition for certiorari.

We have long been tracking the use of mandatory arbitration clauses in employment agreements, which the Supreme Court upheld in a 5-4 decision in Epic Sys. Corp. v. Lewis, 138 S. Ct. 1612 (2018). In our Spring 2019 update, we reviewed the Supreme Court’s decision in New Prime v. Oliveria, 139 S. Ct. 532 (2019), which held that the FAA does not compel courts to enforce private arbitration agreements involving employment contracts with “transportation workers,” which Section 1 of the FAA expressly excludes from the Act’s coverage provided they are “engaged in foreign or interstate commerce.”

Since Olivera, courts have been grappling with the scope of the FAA’s transportation-worker exclusion. In our Summer 2022 update, we examined the Supreme Court’s unanimous holding in Saxon v. Sw. Airlines, 142 S. Ct. 1783 (2022), that a class of workers is “engaged in foreign or interstate commerce” for purposes of the FAA exclusion if they are “directly involved in transporting goods across state or international borders.” In our Spring 2024 update, we examined the Supreme Court’s holding in Bissonnette v. LePage Bakeries Park St., 601 U.S. 246 (2024), that a worker need not work in the transportation industry to fall within the exclusion, and that courts should focus on workers’ duties rather than the industry they work in. We also explained that a circuit split has formed regarding last-mile delivery drivers, with the First and Ninth Circuits holding that they fall within the transportation-worker exclusion and the Fifth Circuit holding that they are subject to the FAA.[11]

The Supreme Court is poised to weigh in. Earlier this year the Tenth Circuit joined the First and Ninth Circuits in holding that last-mile delivery drivers fall within the transportation-worker exclusion even if they do not cross state lines. In Brock v. Flowers Foods, 121 F.4th 753 (10th Cir. 2024), the court examined whether a delivery driver who distributes baked goods from a  national baker to in-state retail stores fell within the transportation-worker exclusion under Bissonnette. Adopting the First and Ninth Circuit’s approaches in Waithaka and Rittman, and distinguishing cases in which rideshare and food-delivery drivers were found not to fall within the exclusion, the Tenth Circuit based its conclusion on the buyer-seller relationship between the driver’s customers and his employer. Because the driver places orders for baked goods from out-of-state bakeries owned by the national baker, picks them up at an in-state warehouse owned by the baker, and delivers them to in-state retailers under the continuous control of the baker, the court concluded that he was directly engaged in interstate commerce under Saxon. The baker appealed, and the Supreme Court granted certiorari on October 20.

We have also been tracking cases holding that a defendant has waived its right to enforce an arbitration agreement. In our Fall 2024 update, we examined the Eighth Circuit’s holding in Thomas v. Pawn Am. Minn., 108 F.4th 610 (8th Cir. 2024), that a defendant waived its right to compel arbitration by “substantially invoking the litigation machinery” when it participated in a motion-to-dismiss hearing, stipulated to a discovery plan, and scheduled a mediation before moving to compel discovery. Earlier this year, the Eighth Circuit in Lackie Drug Store v. OptumRx, 143 F.4th 985 (8th Cir. 2025), held that a waived right to arbitration was “revived” with respect to newly added claims in an amended complaint such that a defendant could move to compel arbitration of those claims, but the defendant could not compel arbitration of the pre-existing claims insofar as the amendments did not expand their scope.

IV. Attorney’s Fees 

Over the past several years, we have been tracking notable developments involving the fairness and reasonableness of fee awards in class-action settlements under Rule 23(e)(2), which has important implications for private enforcement incentives. In our Spring 2024 update, we examined In re Wawa Data Sec. Litig., 85 F.4th 712 (3d Cir. 2023) (“Wawa I”), in which the Third Circuit vacated a $3.2 million settlement fee award and remanded with instructions to reconsider the reasonableness of the award. The panel instructed the district court to consider the award not only relative to the total funds made available to the class but also to the amounts distributed and expected to be claimed. It also instructed the district court to consider whether the fee agreement’s terms reflected the existence of a side agreement between plaintiffs’ counsel and the opposing party.

On remand, the district court again approved the fee award, finding that each class member received considerable value in the form of coupons and injunctive relief compared to the relatively small damages they suffered, and that a side agreement was unlikely. Earlier this year, the Third Circuit affirmed in In re Wawa Data Sec. Litig., 141 F.4th 456 (3d Cir. 2025) (“Wawa II”). Reiterating its “flexible approach toward analyzing fee awards,” the court held that the district court’s remand opinion did not violate its opinion in Wawa I.

Also in our Spring 2024 update, we examined In re Broiler Chicken Antitrust Litig., 80 F.4th 797 (7th Cir. 2023) (“Broiler I”), where the Seventh Circuit endorsed the district court’s approach of evaluating the fairness of fee awards by considering how the plaintiffs would have negotiated with the attorneys had the bargain occurred at the outset of the case when the risk of losing the litigation existed. The panel reversed the district court’s fee award—amounting to 33% of the settlement fund—because the court failed to consider auction bids made by counsel in other litigation.

On remand, the district court decreased the fee award from 33% to 30% based on court-compiled statistical data from comparable cases. Earlier this year, in In re Broiler Chicken Antitrust Litig., 142 F.4th 568 (7th Cir. 2025) (“Broiler II”), a Seventh Circuit panel modified the award, affirming the district court’s analysis but finding that it had erroneously included a skewed sample of cases with higher-than-average fees. The panel adopted 26.6% as the properly calculated median—and therefore a suitable attorney’s fee award—after removing the skewed sample.

This July, the Second Circuit clarified the standards applicable to attorney’s fees in settlements where fee funds are segregated from class settlement funds. In Kurtz v. Kimberly-Clark Corp., 142 F.4th 112 (2d Cir. 2025), the court reversed an attorney’s fee award in a segregated-funds settlement because the court failed to consider the proportion of relief provided “for the class” under Rule 23(e)(2)(C)(iii), relying on Eighth and Ninth Circuit authority holding that class recovery and attorneys’ fees should be reviewed together even when the two are structurally segregated.[12] It also held that whether the appropriate benchmark for the proportionality analysis under Rule 23(e)(2)(C) is the hypothetical maximum recovery to the class or the actual class recovery is a fact-bound question that the district court has discretion to resolve.

The court in Kurtz also elaborated on the relationship between the proportionality analysis of a settlement fee agreement under Rule 23(e) and the reasonableness of an attorney’s fee under Rule 23(h): Although both rules ask courts to weigh class recovery against attorney’s fees, Rule 23(h) uses class recovery as a proxy for attorney success to determine whether fees are reasonably calculated and genuinely earned, while Rule 23(e) safeguards the fairness of a settlement for the class by asking whether the proportion of attorney’s fees compared to the total recovery allocated to the class raises any questions about the settlement’s adequacy.

This April, the Fourth Circuit ruled that a district court may not treat as presumptively reasonable an attorney’s fee provision that complies with a fee matrix in the court’s local rules. After winning a bench trial, plaintiffs in Paredes v. Zen Nails Studio, 134 F.4th 750 (4th Cir. 2025), moved for attorney’s fees under the fee-shifting provision of the Fair Labor Standards Act (“FLSA”) which, like Rule 23, requires that an attorney’s fee award be “reasonable.” The Maryland district court granted the motion but at reduced hourly rates, based on a fee matrix in the court’s local rules, which the court treated as presumptively reasonable. The Fourth Circuit reversed, holding that the district court erred in treating the matrix rates as presumptively correct and higher rates as requiring special justification. While a fee matrix in a court’s local rules can be a useful starting point to determine fees, a court must consider it alongside other relevant evidence including lawyer affidavits, fee awards in similar cases, general surveys, and the court’s own experience.

We have also been following opinions on Rule 23(h)’s requirement that class members have notice and the opportunity to object to fee awards. In our Fall 2024 update, we reported on In re T-Mobile Customer Data Sec. Breach Litig., 111 F.4th 849 (8th Cir. 2024), in which the Eighth Circuit reversed a district court’s decision striking an unnamed class member’s fee objection on the sole basis that she and her counsel were “serial objectors.” We also reported on Chieftain Royalty Co. v. SM Energy Co., 100 F.4th 1147 (10th Cir. 2024), in which the Tenth Circuit ruled that Rule 23(h) required classwide notice of a revised motion for attorneys’ fees that class counsel had submitted in district court after its initial fee award was reversed.

The Fifth Circuit recently ruled that a district court must ensure that class members have actual notice and an opportunity to object to a fee motion under Rule 23(h), even if no class member objects. In Morrow v. Jones, 2025 U.S. App. LEXIS 14230 (5th Cir. Jun. 10, 2025), the court reversed a fee award for failure to provide proper notice. In a prior opinion, the court had vacated the district court’s denial of the motion, which the district court then granted on remand. Defendants appealed, contending that they had no opportunity to object to the motion because the district court stayed the case while it was on appeal and decided the motion without lifting the stay. In its non-precedential opinion reversing the fee award, a Fifth Circuit panel relied on Rule 23(h) and the accompanying Advisory Committee Notes to conclude that, because courts have an independent obligation to protect the interests of the class, failing to enforce Rule 23(h)’s notice requirement was an abuse of discretion regardless of whether a class member had raised the issue.

V. Empirical Data on Class Actions 

In July, Huntington Bank (Huntington) and the UC Hastings Center for Litigation and Courts (UCHCLC) published the 2024 Antitrust Annual Report: Class Action Filings in Federal Court, their seventh annual antitrust report examining empirical information involving the filing and resolution of private antitrust class action lawsuits. The new report covers the years 2009–2024.

The Report shows the number of antitrust class action complaints filed each year, the amount of time they took on average to reach a settlement, the mean and median recoveries, the attorneys’ fees and costs awarded, and the total settlement amounts in each year and overall. It also analyzes the law firms that represented plaintiffs and defendants in antitrust class action settlements, describes cumulative results, and tabulates cumulative totals for claims administrators involved in the settlement process. The report also distinguishes private antitrust enforcement by particular industries, by type of claim, and by type of plaintiff. Key findings include the following:

  • From 2009–2024, a mean number of 123 consolidated complaints were filed per year, with outlier years as low as 72 and as high as 220.
  • From 2009–2024 there were Defendant Wins in 146 cases as a result of judgments on the pleadings, summary judgment, judgment as a matter of law, or trial.
  • From 2009–2024, most antitrust class actions that reached final approval did so within 5–7 years.
  • The mean settlement amount varied by year from $6 million to $184 million, and the median amount varied by year from $2 million to $18.5 million.
  • The total annual settlements ranged from $225 million to $9.6 billion per year.
  • The cumulative total of settlements was $44.8 billion.

Download the Fall 2025 Class Action Issues Update

 

[1] Denney v. Deutsche Bank AG, 443 F.3d 253 (2d Cir. 2006).

[2] Halvorson v. Auto-Owners Life Ins. Co., 718 F.3d 773 (8th Cir. 2013).

[3] In re Asacol Antitrust Litig., 907 F.3d 42 (1st Cir. 2018); In re Rail Freight Fuel Surcharge Antitrust Litig., 934 F.3d 619 (D.C. Cir. 2019).

[4] Messner v. Northshore Univ. HealthSystem, 669 F.3d 802 (7th Cir. 2012); Cordoba v. DIRECTV, 942 F.3d 1259 (11th Cir. 2019); Olean Wholesale Grocery Coop. v. Bumble Bee Foods, 31 F.4th 651 (9th Cir. 2022) (en banc).

[5] Black v. Occidental Petro. Corp., 69 F.4th 1161 (10th Cir. 2023).

[6] Fallick v. Nationwide Mut. Ins. Co., 162 F.3d 410 (6th Cir. 1998); Melendres v. Arpaio, 784 F.3d 1254 (9th Cir. 2015); In re Asacol Antitrust Litig., 907 F.3d 42 (1st Cir. 2018); Boley v. Universal Health Servs., 36 F.4th 124 (3d Cir. 2022).

[7] Fox v. Ritz-Carlton Hotel Co., 977 F.3d 1039 (11th Cir. 2020); Barrows v. Becerra, 24 F.4th 116 (2d Cir. 2022).

[8] Am. Honda Motor Co. v. Allen, 600 F.3d 813 (7th Cir. 2010); Sher v. Raytheon Co., 419 F. App’x 887 (11th Cir. 2011); In re Blood Reagents Antitrust Litig., 783 F.3d 183 (3d Cir. 2015).

[9] In re Zurn Pex Plumbing Prods. Liab. Litig., 644 F.3d 604 (8th Cir. 2011); Sali v. Corona Reg’l Med. Ctr., 909 F.3d 996 (9th Cir. 2018).

[10] Cody v. City of St. Louis, 103 F.4th 523 (8th Cir. 2024).

[11] Rittmann v. Amazon.com, 971 F.3d 904 (9th Cir. 2020); Waithaka v. Amazon.com, 966 F.3d 10, 26 (1st Cir. 2020); Lopez v. Cintas Corp., 47 F.4th 428 (5th Cir. 2022).

[12] In re Bluetooth Headset Prods. Liab. Litig., 654 F.3d 935 (9th Cir. 2011); Johnston v. Comerica Mortg. Corp., 83 F.3d 241 (8th Cir. 1996).

by on October 10, 2025

AAI Asks En Banc Ninth Circuit to Reconsider Panel’s Algorithmic Collusion Opinion (Gibson v. Cendyn)

On October 9, 2025, the American Antitrust Institute (AAI) filed an amicus brief urging the Ninth Circuit Court of Appeals to grant rehearing en banc in Gibson v. Cendyn Grp., Inc. (9th Cir. No. 24-3576).

The plaintiffs in Gibson allege that defendants, hotels on the Las Vegas strip, licensed the same third-party pricing algorithm, which used the hotels’ non-public, commercially sensitive pricing information to make pricing and vacancy recommendations that had the effect of reducing room occupancy and driving up prices. The district court dismissed the case, and AAI filed an amicus brief urging the Ninth Circuit to reverse. A panel of the Ninth Circuit affirmed, insisting that plaintiffs must plead and prove a causal link between the hotels’ licensing agreements and a “restraint” in the relevant market. The panel concluded that the licensing agreements were not vertical agreements but “ordinary sales contracts” which need not be reviewed under the rule of reason.

In its brief supporting rehearing en banc, AAI points out fundamental errors in the panel’s reasoning. By insisting on a causal link between the licensing agreements and a restraint in the relevant market, the panel confused proof of an agreement with proof of the agreement’s effects on competition. As AAI’s brief explains, black letter antitrust law dating back over one hundred years holds that all agreements restrain trade, such that insisting on a causal connection between “an agreement and a restraint” makes no sense. Instead, the panel should have focused on whether there was a causal link between the licensing agreements and anticompetitive effects in the relevant market. The panel’s confusion between a restraint and its effects caused it to disregard the plaintiffs’ well-pleaded allegations that the licensing agreements caused prices to increase and occupancy to decrease in the relevant market. And it leads to the absurd conclusion that, because they do not “cause a restraint” in the relevant market, vertical agreements can never violate Section 1.

AAI also argues that, beyond the fundamental errors in the panel’s reasoning, the opinion merits en banc rehearing because it conflicts with Supreme Court precedent on an issue of exceptional public importance. By creating a new category of agreements which are not subject to rule-of-reason analysis, the panel opinion conflicts with Board of Trade of the City of Chicago v. United States, 246 U.S. 231 (1918), which held that that an agreement must be tested under the rule of reason to determine whether it restrains trade unreasonably in violation of Section 1. AAI also explains that competitors’ use of the same third-party pricing software is an increasingly common feature of the economy, and that the panel opinion would exempt this practice from antitrust scrutiny despite a consensus among experts that it can raise prices and facilitate collusion.

The brief was written by AAI Senior Counsel David O. Fisher, with assistance from AAI President Randy Stutz and AAI Vice President and Director of Legal Advocacy Kathleen Bradish.

Read the full brief: AAI Amicus Brief in Gibson v. Cendyn

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