Pilliod v. Monsanto Co.
282 Cal.Rptr.3d 679
Cal. Ct. App.2021Background
- Alberta and Alva Pilliod used Monsanto’s Roundup (glyphosate-based herbicide) extensively from the 1980s through 2011 and later developed diffuse large B‑cell non‑Hodgkin’s lymphoma (Alva diagnosed 2011; Alberta 2015).
- Plaintiffs sued Monsanto for design defect (consumer expectations) and failure to warn; jury awarded large compensatory and $1 billion punitive damages to each plaintiff; trial court conditionally granted new trial unless plaintiffs accepted substantial reductions, which they did (final judgments ≈ $56M for Alberta; ≈ $31M for Alva).
- Plaintiffs presented extensive expert evidence (epidemiology, animal, mechanism data and case‑specific differential diagnoses) and evidence of Monsanto internal documents and conduct (IBT study problems, alleged ghostwriting, selective study conduct/ disclosure) to prove general and specific causation and malice for punitive damages.
- Monsanto argued FIFRA preemption, insufficiency of causation and liability evidence, instructional error on design defect, evidentiary errors (IBT), attorney misconduct, and that punitive awards were unsupported or unconstitutional.
- The Court of Appeal affirmed the judgment in all respects: rejected FIFRA preemption, upheld consumer‑expectations application, found substantial evidence for liability and causation, upheld admission of IBT evidence, and affirmed reduced punitive awards as not constitutionally excessive.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Preemption under FIFRA | State common‑law duties to warn/design are permissible and not preempted; tort suits can prompt label changes | FIFRA preempts state labeling/packaging requirements (express and impossibility/conflict) and EPA review bars state‑law warnings | Rejected preemption; FIFRA misbranding standards did not show state common‑law duties were “in addition to or different from” FIFRA; impossibility preemption inapplicable to FIFRA here |
| Design‑defect standard (consumer expectations) | Ordinary consumers expected Roundup to be safe as marketed/advertised without special protective gear | Complex toxicology requires expert proof; consumer expectations test inapplicable | Consumer‑expectations test permissible here given marketing/labeling that touted safety and ordinary user expectations; instruction proper |
| Causation (general & specific) | Experts provided epidemiology, animal, mechanism evidence and differential diagnoses showing Roundup substantially contributed to each plaintiff’s lymphoma | Experts for Monsanto disputed causation; argued plaintiffs’ experts lacked reliable methodology and failed to rule out alternatives | Substantial evidence supports general causation and plaintiffs’ experts’ differential‑diagnosis‑based specific causation; credibility/factual disputes for jury |
| Punitive damages (amount & constitutionality) | Evidence of conscious disregard (IBT issues, failure to conduct/ disclose studies, ghostwriting, internal emails) supports punitive damages | Awards unsupported, excessive, violate due process and punish Monsanto multiple times for same conduct | Punitive awards supported by clear and convincing evidence; trial court properly reduced jury’s $1B awards to 4:1 multiples of reduced compensatory damages; reductions constitutional |
Key Cases Cited
- Bates v. Dow Agrosciences LLC, 544 U.S. 431 (2005) (FIFRA preemption principles for state labeling/packaging duties)
- Wyeth v. Levine, 555 U.S. 555 (2009) (preemption analysis and presumption against preemption in state police‑power fields)
- State Farm Mut. Auto. Ins. Co. v. Campbell, 538 U.S. 408 (2003) (due‑process guideposts for reviewing punitive damages)
- Nickerson v. Stonebridge Life Ins. Co., 63 Cal.4th 363 (2016) (California application of State Farm guideposts and judicial review of punitive awards)
- Soule v. General Motors Corp., 8 Cal.4th 548 (1994) (consumer expectations test for design defect)
- Cassim v. Allstate Ins., 33 Cal.4th 780 (2004) (appellate review standards; presumption jury follows instructions)
- Echeverria (Johnson & Johnson Talcum Powder Cases), 37 Cal.App.5th 292 (2019) (discussion of differential diagnosis and expert foundation in toxic‑exposure cases)
- Hardeman v. Monsanto Co., 997 F.3d 941 (9th Cir. 2021) (related Roundup causation and punitive‑damages appellate precedent)
- Johnson v. Monsanto Co., 52 Cal.App.5th 434 (2020) (prior California Roundup punitive‑damages decision affirmed as supporting context)