Active mass tort & MDL status,
May 2026.
Most major US mass torts are in active litigation in May 2026. Roundup (Bayer paid $11B+), 3M earplug ($6B settled), and water utility PFAS ($11B+) are mature. Camp Lejeune admin window closed August 2024; cases now in litigation. Hair relaxer, J&J talc, individual PFAS PI, social media addiction, Paragard, Exactech, and CPAP all still moving. Tylenol autism and Zantac mostly dismissed on Daubert.
Mass torts are weird beasts. Each is technically thousands or tens of thousands of individual cases, but they get treated as one large litigation through Multidistrict Litigation (MDL). A single federal judge supervises pretrial discovery, expert rulings, and bellwether trials. Then cases either settle in waves or get remanded back to the federal districts where they originated for individual trial.
The pattern is consistent. A scientific signal emerges (epidemiological study links a product to a disease). Plaintiff firms file early cases. The Judicial Panel on Multidistrict Litigation consolidates them in an MDL. The MDL judge picks bellwether cases and rules on Daubert motions about expert testimony admissibility. If general causation holds up, bellwether trials produce results that signal settlement value. If general causation fails (Daubert exclusion), the whole MDL collapses (see Zantac, Tylenol).
The current May 2026 status of the major MDLs is in the table below. Bookmark this page; we update it as bellwether results, settlement frameworks, and new MDLs emerge.