A four-year legal battle over whether DeFi protocols are liable for scam tokens ended on March 3, 2026. Judge Katherine Polk Failla of the U.S. District Court for the Southern District of New York dismissed the Risley v. Universal Navigation class action with prejudice, meaning the plaintiffs cannot refile. The ruling establishes that building a decentralized exchange does not make you responsible for what other people trade on it.
UNI surged 6% to approximately $3.92 on the news.
Four Years of Risley v. Universal Navigation
The lawsuit began in April 2022, when a group of investors led by Nessa Risley filed a class action against Uniswap Labs, founder Hayden Adams, and venture backers Paradigm, Andreessen Horowitz, and Union Square Ventures. The core allegation: Uniswap facilitated "rug pulls and pump-and-dump schemes" by allowing anyone to list and trade tokens on its protocol.
The plaintiffs argued that Uniswap substantially assisted cryptocurrency fraud by providing the infrastructure where scam tokens could be traded. They sought to hold the protocol's developers, its founder, and its investors financially responsible for losses caused by anonymous third-party token creators.
The case went through three phases:
| Date | Event |
|---|---|
| April 2022 | Initial class action filed |
| August 2023 | First dismissal (securities claims thrown out) |
| May 2024 | Amended complaint filed, pivoting to state consumer protection violations |
| March 2026 | Final dismissal with prejudice, all remaining claims rejected |
The August 2023 ruling already knocked out the federal securities claims. Judge Polk Failla found those claims "devoid of factual support" and noted that "due to the Protocol's decentralized nature, the identities of the Scam Token issuers are basically unknown and unknowable, leaving Plaintiffs with an identifiable injury but no identifiable defendant."
The plaintiffs came back with an amended complaint in May 2024, dropping the securities angle and instead arguing state-level consumer protection violations. That strategy failed too.
The Ruling: Platform Access Is Not Fraud Assistance
The March 2026 dismissal rests on a clean legal distinction. Judge Polk Failla wrote that plaintiffs failed to prove Uniswap had "knowledge of the fraud and substantially assisted in its commission."
The core quote from the ruling: "Simply providing the platform on which a fraud takes place is not the same as substantially assisting that fraud."
The judge drew two analogies to make her reasoning concrete:
The bank analogy. Banks are not liable for money laundering simply because they provide accounts. The existence of a financial service does not create liability for how third parties use it.
The messaging analogy. WhatsApp is not liable for drug deals conducted over its platform. Providing a communication tool does not constitute assistance in the crimes discussed through it.
She also compared the situation to holding a self-driving car manufacturer liable for traffic violations committed by third parties. The platform provides the infrastructure. What users do with it is their own responsibility.
A critical detail: the court found that being generally aware that scams exist on the platform is not the same as knowing about a specific scam before it happens. Victims submitted complaints after their trades had already occurred, so there was no evidence Uniswap had prior knowledge of any individual fraud.
Why "With Prejudice" Changes Everything
The phrase "with prejudice" is the legal equivalent of a permanent door lock. It means the plaintiffs cannot refile the same claims. This is not a technicality dismissal where a better-drafted complaint could revive the case. The court examined the substance of the allegations across three iterations of the complaint and rejected them all.
For Uniswap, the four-year legal overhang is over. For DeFi more broadly, the ruling creates a persuasive precedent (though not binding on other circuits) that open-source protocol developers cannot be sued for third-party misuse of their smart contracts.
The state-law claims were the plaintiffs' last card. After federal securities claims failed in 2023, consumer protection and aiding-and-abetting theories under state law were the only remaining path. The court rejected those too, tightening the limits on platform liability for DeFi developers at both the federal and state level.
SpendNode's Take: This Was the Right Call, But the War Is Not Over
We think the ruling is legally sound and economically necessary.
The precedent matters more than the case. Uniswap processes billions in weekly volume across thousands of token pairs. If the court had ruled that Uniswap was liable for scam tokens, every DEX, every AMM, every lending protocol with permissionless asset listing would face the same exposure. The chilling effect on DeFi development would have been severe. Developers would need to choose between permissionless listing (and unlimited liability) or gatekeeping (and becoming the centralized intermediaries they were designed to replace).
The analogies hold up. Visa is not liable when a merchant commits fraud using its payment rails. Amazon is not liable when a third-party seller ships a defective product (under most circumstances). The principle that infrastructure providers are not automatically liable for user misconduct is well-established in traditional finance and e-commerce. Extending it to DeFi protocols is logical.
But this does not mean DeFi has no accountability problems. The plaintiffs in this case lost real money to real scams. The rug pull problem on Uniswap is genuine. The ruling says the legal remedy is to pursue the actual scammers, not the platform. That is legally correct, but practically difficult when the scammers are anonymous wallet addresses. The crypto industry still needs better solutions for rug pull prevention, whether through on-chain analytics, automated scam detection, or improved token screening tools.
Watch for Congress. Judge Polk Failla explicitly noted in the 2023 ruling that the plaintiffs' concerns are "better addressed to Congress than to this Court." If legislators decide to create DeFi-specific liability frameworks, this judicial precedent could be overridden by statute. The ruling buys time for the industry, but the regulatory conversation is far from settled.
What This Means for Crypto Users and Builders
For DeFi developers: This ruling reduces legal risk for building permissionless protocols. If you create a DEX, lending platform, or any protocol that allows open asset listing, you are not automatically liable for third-party fraud. But this applies to the protocol layer. If you actively promote or specifically enable a scam token, the calculus changes.
For DeFi users: The flip side of this ruling is that the platform will not bail you out. If you trade a scam token on Uniswap and get rugged, your legal recourse is against the scammer, not against Uniswap. This reinforces the importance of doing your own research, checking token contract audits, and using on-chain security tools before interacting with unfamiliar tokens.
For crypto card users: This ruling does not directly affect crypto card products, which are issued by regulated entities with KYC and consumer protections. But it does affect the broader DeFi ecosystem that card users interact with. If you use a self-custody card like Gnosis Pay or Solflare and interact with DeFi protocols, understanding that platform liability is limited is part of the risk picture.
For the UNI token: The 6% price jump reflects reduced legal and regulatory risk being priced out. With the class action permanently dead, one of the longest-running legal threats to Uniswap Labs is gone. Whether the move holds depends on broader market conditions, but the legal overhang removal is a genuine catalyst.
FAQ
What does "dismissed with prejudice" mean? It means the case is permanently closed. The plaintiffs cannot refile the same claims. This is the strongest possible outcome for the defendant. A dismissal "without prejudice" would have allowed the plaintiffs to try again with a new complaint.
Does this ruling apply to all DeFi protocols? The ruling is from a federal district court in Manhattan. It is not technically binding on courts in other jurisdictions, but it is highly persuasive as precedent. Other judges facing similar DeFi liability cases will likely reference this ruling.
Can Uniswap still be sued for other reasons? Yes. This ruling covers the specific Risley class action claims about rug pull liability. Uniswap could still face regulatory action from the SEC, CFTC, or state regulators on separate grounds. The SEC's Wells notice to Uniswap Labs from 2024 is a separate matter.
Were the VC backers also cleared? Yes. Paradigm, Andreessen Horowitz, and Union Square Ventures were all defendants. The dismissal with prejudice covers all defendants in the case.
What happened to the people who lost money to rug pulls? The court ruled their legal remedy is to pursue the actual scam token creators, not Uniswap. In practice, this is difficult because most rug pull operators use anonymous wallets.
Overview
Judge Katherine Polk Failla dismissed the Risley v. Universal Navigation class action with prejudice on March 3, 2026, ending a four-year legal battle over whether Uniswap is liable for scam tokens traded on its protocol. The ruling establishes that "providing a platform where fraud can exist is not the same as assisting fraud." Plaintiffs tried federal securities claims (rejected 2023), then state consumer protection claims (rejected 2026). Both failed. The decision creates strong precedent that DeFi protocol developers are not automatically liable for third-party misconduct on permissionless platforms. UNI rose 6% on the news.
Recommended Reading
- Smart Contract Fraud Protection: What Crypto Card Users Should Know
- US Bipartisan Bill Would Shield Blockchain Developers From Criminal Prosecution
- Uniswap Labs Launches AI Agent Skills for DeFi Automation
