U.S. federal Judge Katherine Polk Failla issued a final judgment, dismissing with prejudice the class-action case Risley v. Universal Navigation Inc., which had accused Uniswap Labs of facilitating “rug pulls” and pump-and-dump schemes. A dismissal with prejudice is the hard stop version of a win: it permanently bars plaintiffs from re-litigating the federal and remaining state-law claims against Uniswap Labs, its founder, and certain investors in this case.
The market read it as a meaningful legal de-risking event for DeFi, and UNI reportedly rose about 6% on the news. The price reaction makes sense in context: when a headline lawsuit exits the board, risk premia compress, especially for assets that trade partly on regulatory and litigation narrative.
What the court actually said about liability
The core reasoning was that running a venue and publishing open-source smart-contract code is not, by itself, “substantial assistance” to third-party fraudsters. Judge Failla found the plaintiffs did not plausibly allege Uniswap had actual knowledge of specific scams or provided the kind of active support that would trigger liability. In plain terms, the opinion draws a line between providing infrastructure and participating in the fraud.
Failla also used a familiar analogy to explain why the claims didn’t stick: infrastructure that can be used for good or bad does not become liable simply because bad actors use it. The court’s logic is that providing a conduit is not the same as endorsing or aiding every illicit transaction that passes through it. That framing is important for counsel because it directly addresses the “secondary liability” theory that plaintiffs tried to apply to DeFi builders.
The opinion also rejected the unjust-enrichment argument on a practical factual basis. Plaintiffs claimed Uniswap benefited financially from the activity, but the court found Uniswap Labs did not receive direct financial benefit from the relevant transactions because the protocol’s fee switch was inactive during the 2021–2022 period plaintiffs focused on. Without a direct benefit hook, the enrichment theory loses the traction it needs to survive.
Why this matters beyond Uniswap
The procedural timeline matters because it shows the claims narrowing and still failing. The case began in April 2022, federal securities claims were dismissed in August 2023, the Second Circuit affirmed that dismissal in February 2025 while remanding state-law claims, and plaintiffs re-pleaded in May 2025 under state consumer-protection theories before this final March 2, 2026 dismissal. That sequence strengthens the signaling effect: even after multiple attempts to reframe the allegations, the court ultimately shut the door.
Uniswap’s leadership framed the ruling as an industry-relevant precedent. General counsel Brian Nistler called it “another precedent-setting ruling for DeFi,” and CEO Hayden Adams characterized the outcome as sensible, emphasizing that open-source developers should not be held responsible when their code is misused by bad actors. That messaging aligns with what the decision practically provides: a stronger litigation-risk baseline for protocols that publish code without pleaded knowledge or active assistance.
For market participants, the immediate effect is reduced overhang for Uniswap Labs and a more favorable reference point when evaluating platform and developer exposure across similar protocols. While future cases will still test the boundary between access facilitation and unlawful assistance, this judgment becomes a concrete citation point for how courts may treat broad “you enabled it” theories in DeFi.