Mass Tort brief
Supreme Court Roundup Preemption Redraws Mass Tort Defenses
A landmark 7-2 Supreme Court preemption decision shields chemical manufacturers, while GLP-1 weight-loss litigations expand into vision-loss claims and venue battles heat up over Paraquat.
Mass Tort
This ruling establishes a major defense precedent for chemical and agricultural manufacturers, limiting their liability under state tort law when their products carry EPA-approved labels.
BackgroundUnder the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), the Environmental Protection Agency (EPA) regulates pesticide labeling. Plaintiffs have historically argued that state tort law could require warnings not mandated by the EPA. This decision resolves a long-standing tension between federal agency findings and state-level civil jury awards.
- The majority opinion, authored by Justice Brett Kavanaugh in Monsanto Co. v. Durnell, held that because the EPA has repeatedly assessed glyphosate and concluded it is not likely to cause cancer, state-level failure-to-warn claims are legally preempted.
- Justice Ketanji Brown Jackson wrote the dissenting opinion, joined by Justice Neil Gorsuch, arguing that the ruling overrides traditional state police powers to protect consumers.
- In the immediate aftermath, Bayer's legal team petitioned U.S. District Judge Vincent Chhabria to wind down the federal Roundup multidistrict litigation (MDL), asserting that the Supreme Court victory effectively dismantles the failure-to-warn theories that support nearly 65,000 remaining active cases.
Mass Tort
The rapid growth of the specialized vision-loss track creates a new legal challenge for manufacturers, moving beyond gastrointestinal side effects to severe, irreversible sensory damage.
BackgroundMultidistrict litigation (MDL) consolidates similar cases from multiple federal districts under a single judge to coordinate discovery and streamline pretrial proceedings. In this case, plaintiffs are suing over severe gastrointestinal side effects and a newly linked optical condition.
- The primary gastrointestinal-injury MDL (MDL 3094)—focusing on severe gastroparesis (stomach paralysis), ileus, and bowel obstruction claims—has reached 3,848 active pending cases under U.S. District Judge Karen S. Marston in Pennsylvania.
- Concurrently, the newly established MDL for NAION (non-arteritic anterior ischemic optic neuropathy) vision-loss claims (MDL 3163), also assigned to Judge Marston, grew 70% in two months to 146 active pending cases.
- The vision-loss track is accelerating following a newly published Veterans Affairs (VA) study in JAMA Network Open showing GLP-1 users carry a 35% higher risk of developing NAION compared to other diabetes medications.
Mass Tort
Keeping the settlement in state court avoids procedural delays, allowing the parties to proceed with the final fairness hearing in August to resolve thousands of active claims.
BackgroundRemoval is a legal procedure where a case filed in state court is transferred to federal court, usually because it involves federal laws or diverse parties. Objectors to class actions often attempt removals to delay or disrupt state court approvals.
- U.S. District Judge Henry E. Autrey of the Eastern District of Missouri issued an order remanding the proposed $7.25 billion settlement (King v. Monsanto) back to Missouri state court.
- Objectors to the massive 21-year settlement deal had attempted to remove the case to federal court, but Judge Autrey ruled that only defendants have the authority to remove a case.
- This keeps the settlement approval proceedings in the 22nd Judicial Circuit Court of St. Louis, where the deal had received preliminary approval, and Circuit Judge Timothy Boyer rescheduled the final fairness approval hearing for August 19, 2026.
Mass Tort
Keeping the cases in Philadelphia maintains pressure on the manufacturers by preserving a fast-tracked, plaintiff-favored parallel venue to the slower federal MDL.
BackgroundMass tort defendants often seek to move cases from plaintiff-friendly venues like Philadelphia's Complex Litigation Center to jurisdictions with stricter limits on damages or different legal standards. Venues like Philadelphia are highly favored by plaintiffs' attorneys for their fast schedules and historical jury awards.
- Pennsylvania Court of Common Pleas Judge Joshua Roberts recommended rejecting Syngenta and Chevron's efforts to move several bellwether Paraquat cases.
- Judge Roberts ruled that the defendants failed to provide sufficient reasons to override the plaintiffs' choice of forum.
- Pennsylvania currently hosts 1,952 active Paraquat lawsuits from across the country, serving as a parallel venue to the federal Paraquat MDL in Illinois, while manufacturers Syngenta and Chevron continue negotiating a global settlement framework to resolve thousands of federal claims.
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