Ninth Circuit ruling on social media addiction lawsuits: Section 230 is a defense, not immunity

On August 10, 2026, the U.S. Court of Appeals for the Ninth Circuit issued a landmark ruling that allows thousands of lawsuits against Meta, Google, TikTok, Snapchat, and other social media companies to proceed toward trial . The lawsuits allege these companies designed their platforms to be addictive to young users, causing widespread harm to children and teenagers .

The ruling: a procedural defeat for big tech

A three-judge panel of the Ninth Circuit issued a 24-page opinion denying the companies' appeal . Crucially, the court did not decide whether Section 230 of the Communications Decency Act ultimately shields the platforms from these claims. Instead, it ruled that the companies' appeal was procedurally premature — the Section 230 defense should be raised at trial, not used as an immediate basis to kill the lawsuits before discovery . The court described Section 230 as providing a liability defense that must be proven at trial, not blanket immunity from being sued at all .

The companies' argument: Section 230 protects platform design

Meta, Google, TikTok, and Snap argued that Section 230 of the Communications Decency Act protects interactive computer services from being treated as the "publisher" of third-party content, and that the addiction claims are fundamentally about how they published and curated content . The companies sought an immediate interlocutory appeal to have the cases dismissed entirely, arguing that the allegations fall squarely within what Section 230 was designed to protect — namely, platforms' decisions about what content to display and how to design their services . Separately, Meta asked the appeals court to delay the trial brought by 29 state attorneys general, but the court rejected that request as well .

The plaintiffs' counterargument: product design is not third-party content

Plaintiffs — including parents, school districts, and state attorneys general — argued that the lawsuits are not about third-party content but about the design of the platforms themselves: algorithms, notification systems, infinite scroll features, and other design elements intentionally made addictive . They contended that the companies' appeal was a procedural tactic and that Section 230 is an affirmative defense to be litigated at trial, not a jurisdictional bar to being sued . The Ninth Circuit's opinion noted that Congress enacted Section 230 to protect platforms from liability for what users post — not to shield companies from claims that they built platforms designed to addict children .

What happens next

The ruling clears the way for more than 3,000 consolidated lawsuits (including those from the Multi-District Litigation in the Northern District of California) to proceed into discovery and toward potential trials . The companies can still raise Section 230 as a defense at trial, but they lost the bid to have the cases thrown out at the earliest stage. This decision represents a significant procedural shift in how courts interpret Section 230, potentially reshaping the legal landscape for social media companies facing similar claims in the future .