A federal appeals court cleared the way for roughly 3,000 lawsuits to proceed against major social media companies on Aug. 10, rejecting an attempt by TikTok and Meta to use a legal shield designed to protect online platforms from liability for user content as a basis for avoiding claims that their products are deliberately designed to be addictive.
A three-judge panel of the U.S. Court of Appeals for the Ninth Circuit dismissed the appeal as premature, finding that the companies had filed it too early in the litigation process. The ruling does not resolve the underlying lawsuits on their merits, but it means TikTok, Meta and other companies named in the litigation must continue to face the cases in federal court rather than escaping them at this stage.
Meta is the parent company of Facebook, Instagram and WhatsApp.
The legal argument the companies made
TikTok and Meta had argued that Section 230 of the Communications Decency Act of 1996, a federal law that generally shields online platforms from lawsuits arising from content that users post, also protects them from claims that they failed to warn the public that their platforms can be addictive. They sought to appeal the lower court’s refusal to dismiss the cases on those grounds before the litigation proceeded further.
The companies also argued that they should be entitled to appeal immediately rather than waiting until the cases are fully resolved in the lower court. The companies contended that their Section 230 immunity was the kind of right that entitled them to immediate appellate review.
The Ninth Circuit panel disagreed. Writing for the panel, Circuit Judge Jacqueline Nguyen said Section 230 provides a defense to liability rather than immunity from suit, a distinction that has significant procedural consequences. A defense to liability means the protection can be raised and assessed in the course of litigation. Immunity from suit would mean the lawsuit itself should be dismissed before any litigation takes place. Because the court found the companies have a defense rather than immunity, they are not entitled to appeal the denial of that defense before the case is concluded.
What the lawsuits allege
Each of the approximately 3,000 lawsuits now cleared to proceed alleges that social media companies including TikTok and Meta designed their platforms with features specifically intended to maximize the time users spend on them, including by exploiting psychological vulnerabilities that are particularly pronounced in young people. The plaintiffs argue that this design-for-addiction approach caused measurable harm to youth mental health and that the companies failed to disclose what they knew about those effects.
This legal theory is distinct from claims based on content moderation or the specific speech of users, which is where Section 230 protection is most clearly established. The addictive design claims focus on the platforms’ own conduct and product decisions rather than on what users posted, which is why plaintiffs and some courts have found those claims potentially viable even under Section 230.
The broader litigation landscape
The Ninth Circuit ruling is one of several significant court decisions that have addressed the boundaries of social media companies’ legal exposure in recent years. The addictive design lawsuits have been pending in federal courts for some time, consolidated in the Northern District of California, generating rulings about which theories of harm survive.
A separate New Mexico state court ruling earlier this month ordered Meta to pay $567 million into a fund for youth mental health, reflecting a different path through state court that has produced more definitive financial consequences. The federal multidistrict litigation, now cleared to proceed past the Section 230 challenge, will take considerably longer to resolve.
The companies are likely to continue contesting each lawsuit on other grounds as the cases proceed.
