Tort Cluster
This cluster captures pharmaceutical and infant-nutrition mass torts where plaintiffs allege manufacturers possessed evidence of serious adverse events but failed to update warnings to physicians, patients, or hospitals. Depo-Provera meningioma claims, Paraquat Parkinson's disease litigation, and NEC infant-formula cases share patterns of internal corporate knowledge, regulatory inertia, and delayed label changes. Each tort track relies on epidemiological causation evidence, custodial document discovery, and Daubert-tested expert testimony to establish liability.
MDL 3140 (N.D. Cal.)
March 2024 BMJ study established a 5.6× increased meningioma risk for long-term Depo-Provera users. Pfizer faces failure-to-warn allegations. Massive plaintiff pool — Depo-Provera has been prescribed to tens of millions of women since 1992.
MDL 3004 (S.D. Ill.)
Paraquat is a restricted-use herbicide linked to Parkinson's disease in agricultural workers. Defendants are struggling on causation arguments. MDL has shown consistent plaintiff momentum.