A Doctrinal Shift with Outsized Consequences
For decades, the six-year statute of limitations under 28 U.S.C. § 2401(a) served as a reliable shield for federal agencies. Once a regulation survived its first six years without challenge, it was, for all practical purposes, immune from facial attack under the Administrative Procedure Act (APA). That assumption has now been upended.
In Corner Post, Inc. v. Board of Governors of the Federal Reserve System, the Supreme Court held that the APA's limitations period does not begin to run when a rule is published—it begins when a plaintiff is first injured by the rule. For newly formed entities, newly regulated parties, or businesses only recently brought within a regulation's reach, this means the six-year clock can start running today, even against regulations promulgated twenty, thirty, or forty years ago.
This is not a marginal procedural adjustment. It is a fundamental reconception of when and by whom long-standing federal regulations can be challenged.
The Prior Regime: Accrual at Promulgation
Before Corner Post, most circuits applied what might be called the "publication rule": the limitations period accrued when the agency issued the final rule, regardless of when a particular plaintiff came into existence or became subject to the regulation. Under this framework:
- A regulation adopted in 1990 became effectively unchallengeable by 1996, absent an as-applied exception.
- New entrants to a regulated industry inherited decades of settled rulemaking with no facial recourse, even if they had never had an opportunity to litigate the rule's validity.
- Agencies could rely on the passage of time itself as a defense, independent of the rule's substantive merits.
This approach offered agencies and regulated industries a measure of stability. It also, as the Court recognized, created a structural anomaly: a plaintiff injured by a decades-old rule could be barred from ever obtaining judicial review simply because the rule predated the plaintiff's own existence.
The Corner Post Holding
The Supreme Court rejected the publication-accrual approach in favor of the traditional civil accrual standard: a claim accrues under § 2401(a) when the plaintiff suffers an injury from final agency action, not when that action is taken. The Court reasoned that § 2401(a) is a general federal statute of limitations, not a specialized administrative-law provision, and that ordinary accrual principles—injury-based accrual—apply with equal force to APA claims as to other federal causes of action.
The practical effect is significant:
- A business formed in 2023 that becomes subject to a rule adopted in 1985 has its own six-year window to bring a facial APA challenge, running from the date the rule first caused it injury.
- Long-dormant regulations that industry participants have structured decades of compliance around are, in principle, newly vulnerable to challenge by recently regulated or newly organized entities.
- The decision effectively decouples the limitations period from the age of the regulation and reattaches it to the litigant's own regulatory history.
Why This Matters for Federal Litigants
The decision reopens strategic avenues that many practitioners had long treated as foreclosed. Entities considering litigation against federal agencies should reassess several categories of exposure and opportunity:
- Newly formed or newly regulated entities. Corporations, funds, or business units organized after a rule's adoption—but now subject to it—may have an independent accrual date and a fresh limitations window.
- Restructured or reorganized businesses. Entities that underwent mergers, spin-offs, or corporate reorganizations that brought them within a regulation's scope for the first time may likewise possess a new claim.
- Agencies relying on regulatory "settledness." Agencies can no longer assume that a rule's age alone insulates it from facial challenge; they must be prepared to defend the substantive validity of older rules against parties with fresh standing.
- Litigation strategy and forum selection. Because accrual now turns on individualized injury, plaintiffs and their counsel must carefully document the timing and nature of first injury to establish—and defend—the limitations calculus.
Practical Implications for Businesses and Counsel
For sophisticated clients navigating heavily regulated industries—financial services, healthcare, energy, environmental compliance, and beyond—Corner Post has immediate strategic relevance:
- Audit regulatory history. Businesses should identify which regulations they are subject to, when their obligations under each began, and whether that timing creates a viable window for facial challenge.
- Reassess dormant compliance burdens. Rules long assumed unchallengeable may now warrant a second look, particularly where the underlying statutory authority or agency reasoning is questionable post–Loper Bright and related administrative-law developments.
- Anticipate agency responses. Agencies may attempt to reissue or "readopt" rules through interpretive guidance or minor amendments to reset settled expectations, though such maneuvers carry their own APA risks.
- Coordinate constitutional and statutory theories. Facial APA challenges newly available under Corner Post can often be paired with separation-of-powers, major-questions, or statutory-authority arguments to maximize litigation leverage.
Looking Ahead
Corner Post does not eliminate the six-year limitations period; it changes when the clock starts. But by tying accrual to individual injury rather than regulatory age, the Court has meaningfully expanded the universe of parties who can bring facial challenges to entrenched federal rules.
For businesses newly subject to older regulations, this is an opening worth evaluating carefully and promptly. For agencies and established industry incumbents who have long relied on regulatory finality, it is a signal that even well-settled rules may face renewed scrutiny—brought not by yesterday's litigants, but by tomorrow's.
Counsel advising clients in regulated industries should treat Corner Post as a catalyst for a fresh regulatory risk assessment, not merely an academic development in administrative law.