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Supreme Court Clarifies that Pending Class Actions Toll Only Individual Claims, Not Successive Class Actions: China Agritech, Inc. v. Resh

Client Alert | 2 min read | 06.12.18

On June 11, 2018, the U.S. Supreme Court held in China Agritech, Inc. v. Resh that the filing of a putative class action equitably tolls the limitations period for putative class members to file individual claims, but does not toll the limitations period for filing new class actions.

Nearly 45 years ago, the Supreme Court held in American Pipe and Construction Co. v. Utah, 414 U.S. 538 (1974), that the filing of a class action lawsuit tolls the limitations period for all putative class members unless and until class certification is denied. In that case, the Court permitted absent class members to utilize the tolling period to either (i) intervene as individuals in the action in which certification was denied or (ii) file new lawsuits in their individual capacities. But American Pipe left open the question of whether absent class members could rely on the tolling period to file a new class action based on the same claims. Over time, a Circuit split developed, with several courts, including the Second and Fifth Circuits, holding that successive class claims are not tolled, but the Ninth Circuit holding that the deadline for filing successive class actions is tolled under American Pipe.

Yesterday’s decision resolves this question conclusively. With Justice Ginsberg writing for an eight-justice majority in which Justice Sotomayor concurred, the Court’s opinion holds that “American Pipe tolls the statute of limitations during the pendency of a putative class action, allowing unnamed class members to join the action individually or file individual claims if the class fails. But American Pipe does not permit the maintenance of a follow-on class action past expiration of the statute of limitations.” China Agritech, 584 U. S. ____ (2018) (Slip Op. at 2). The Court explained that with this narrow construction, American Pipe tolling does not offend the policy underlying statutes of limitations because “[t]he time to file individual actions once a class action ends is finite, extended only by the time the class suit was pending.” Id. at 10. In contrast, “the time for filing successive class suits, if tolling were allowed, could be limitless,” as each newly filed class action would result in additional tolling. Id. “The ‘efficiency and economy of litigation’ that support tolling of individual claims … do not support maintenance of untimely successive class actions; any additional class filings should be made early on, soon after the commencement of the first action seeking class certification.” Id. at 6.

This decision has significant practical implications for class action defendants. Previously, a defendant who defeated class certification could not be certain that potential future liability would be limited to individual claims. In the aftermath of China Agritech, defendants now have certainty that if class certification fails in one lawsuit and the limitations period has expired, the defendant will not be subject to follow-on class actions from absent class members waiting in the wings.

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Client Alert | 5 min read | 12.12.25

Eleventh Circuit Hears Argument on False Claims Act Qui Tam Constitutionality

On the morning of December 12, 2025, the Eleventh Circuit heard argument in United States ex rel. Zafirov v. Florida Medical Associates, LLC, et al., No. 24-13581 (11th Cir. 2025). This case concerns the constitutionality of the False Claims Act (FCA) qui tam provisions and a groundbreaking September 2024 opinion in which the United States District Court for the Middle District of Florida held that the FCA’s qui tam provisions were unconstitutional under Article II. See United States ex rel. Zafirov v. Fla. Med. Assocs., LLC, 751 F. Supp. 3d 1293 (M.D. Fla. 2024). That decision, penned by District Judge Kathryn Kimball Mizelle, was the first success story for a legal theory that has been gaining steam ever since Justices Thomas, Barrett, and Kavanaugh indicated they would be willing to consider arguments about the constitutionality of the qui tam provisions in U.S. ex rel. Polansky v. Exec. Health Res., 599 U.S. 419 (2023). In her opinion, Judge Mizelle held (1) qui tam relators are officers of the U.S. who must be appointed under the Appointments Clause; and (2) historical practice treating qui tam and similar relators as less than “officers” for constitutional purposes was not enough to save the qui tam provisions from the fundamental Article II infirmity the court identified. That ruling was appealed and, after full briefing, including by the government and a bevy of amici, the litigants stepped up to the plate this morning for oral argument....