Paraquat / Parkinsons

● CAMPAIGN OPEN DAUBERT RULINGS / GENERAL CAUSATION 10 signals
Parkinson’s Disease  ·  Paraquat Herbicide
DEFENDANT
Syngenta / Chevron
MDL / DOCKET
MDL 3004
S.D. Illinois
JUDGE
Hon. Nancy Rosenstengel
PLAINTIFFS
5,000+
BELLWETHER / TRIAL
Contingent on causation ruling
SETTLEMENT STATUS
None — Daubert ongoing
📋 Case Overview

Paraquat is a highly toxic herbicide used in agriculture. Scientific studies have linked paraquat exposure to Parkinson’s disease through oxidative stress in dopaminergic neurons. MDL 3004 is in a critical Daubert phase where Judge Rosenstengel will determine whether plaintiffs’ general causation experts can testify. The outcome of this ruling will determine whether the MDL proceeds to trial or collapses as in Zantac.

⚗ CAUSATION SUMMARY

Paraquat causes oxidative stress and mitochondrial damage in dopaminergic neurons of the substantia nigra — the same pathology as Parkinson’s. NIH and EPA have both noted the link. Animal studies are strong; human epidemiological studies show 2-3x risk elevation in agricultural workers. The Daubert hearing on general causation is the pivotal event.

⚖️ Litigation Status ACTIVE — DAUBERT BATTLE ONGOING
MDL / Court
MDL 3004 — S.D. Illinois (Judge Nancy Rosenstengel)
Active Plaintiffs
5,000+

MDL 3004 is at a critical Daubert juncture. Syngenta and Chevron are challenging general causation experts. The Parkinson's disease link has strong epidemiological support but defendants are aggressively contesting it. Bellwether trials projected after Daubert rulings.

Key Verdicts & Settlements
⚖️
No verdicts yet — Daubert proceedings active
General causation hearing expected 2024–2025. Outcome will determine whether MDL proceeds to trial.
🔬
2011 NIH meta-analysis — 2.5x Parkinson's risk
Foundation of causation case. Multiple subsequent studies support the association.
⏸️
Filing trend: Watch Daubert. Campaign open but attorneys should monitor the causation ruling carefully. A favorable Daubert outcome would dramatically increase case value and plaintiff bar interest.
📍 Geographic Exposure
Agricultural states: California, Florida, Illinois, Iowa, Kansas
Farming communities with documented herbicide application
No consumer exposure — licensed restricted use pesticide
🏢 Key Defendants
DEFENDANT
ROLE
INTEL NOTE
Syngenta AG
Primary manufacturer
Major defendant; responsible for Gramoxone brand
Chevron Phillips Chemical
Historical manufacturer/distributor
Named in historical exposure claims
✅ Campaign Eligibility Criteria
Licensed pesticide applicator or farm worker with paraquat exposure
Diagnosed with Parkinson’s disease (idiopathic)
Exposure pre-dating Parkinson’s diagnosis by 10+ years (latency period)
Age of onset younger than typical (under 60) strengthens case
These criteria reflect general case strength indicators and are not legal advice. Contact CloudIntake to screen individual claimants.
📅 Litigation Timeline
1961
Paraquat introduced commercially; widespread agricultural use begins
2011
NIH study shows 2.5x Parkinson’s risk in agricultural workers using paraquat
2017
EPA notes link between paraquat and Parkinson’s in registration review
2021
MDL 3004 formed in S.D. Illinois
2023
Daubert hearings on general causation begin before Judge Rosenstengel
2024–2025
Daubert ruling pending — most consequential event in this MDL
Paraquat / Parkinsons — Intelligence Feed ⚖ 68 filings/30d ↑ LIVE
📰 NEWS
Syngenta settles bellwether US trial over paraquat links to Parkinson’s
Mar 13, 2026 The New Lede Read Source →
📰 NEWS
Syngenta, Chevron Settle Paraquat Case Before 1st Philly Trial
Mar 13, 2026 Law360 Read Source →
📰 NEWS
Thousands of U.S. farmers have Parkinson’s.
They blame a deadly pesticide.
Mar 13, 2026 MLive.com Read Source →
📰 NEWS
First US paraquat trial to start this week, examining links between the pesticide and Parkinson’s disease
Mar 13, 2026 The New Lede Read Source →
📰 NEWS
An angry judge and a combative court hearing – questions raised about Syngenta’s paraquat settlement effort
Mar 13, 2026 The New Lede Read Source →
📰 NEWS
Citing Parkinson’s risk, Pennsylvania lawmakers push for paraquat ban
Mar 13, 2026 The New Lede Read Source →
📰 NEWS
Chevron Moves for Sanctions in Phila.
Paraquat Mass Tort Case
Mar 13, 2026 Law.com Read Source →
📰 NEWS
Paraquat Lawsuit Settlement Amounts
Mar 13, 2026 Lawsuit Information Center Read Source →
📡 SIGNAL
Konnagan v. Syngenta Crop Protection LLC — District Court, S.D. Illinois
Mar 29, 2026 CourtListener / PACER Read Source →
📡 SIGNAL
Konnagan v. Syngenta Crop Protection LLC — District Court, S.D. Illinois
Mar 22, 2026 CourtListener / PACER Read Source →
Feed All Torts
MASS TORT AD AGENCY
High-value cases. Low competition. Right now.
Paraquat / Parkinsons plaintiffs are searching for representation today. MTAA connects you before the MDL gets crowded.
See Campaign Options →
Plaintiff attorneys only · mtaa.ai
JACOB SCORE™
Paraquat / Parkinsons
60 / 100
ScienceStrong
MomentumDeveloping
CampaignModerate
TimelineDeveloping
VerdictsWeak
STRONG SCIENCE · NO VERDICTS YET
Jacob Score™ — Methodology & Legal Disclaimers
The Jacob Score is a composite 1–100 litigation opportunity index for mass torts, produced by the TortIntel editorial team at Mass Tort Ad Agency. It is updated periodically as litigation conditions change.

Score Dimensions (each rated 1–5)

Science — Peer-reviewed study quality and quantity, relative risk magnitude, replication across independent research groups, FDA or regulatory action taken, and estimated Daubert survivability based on published expert testimony and prior rulings.

Momentum — MDL formation and phase, plaintiff count trajectory, case consolidation activity, and overall litigation velocity.

Campaign — Current filing window status, case saturation, defendant solvency, estimated qualifying population size, and co-defendant dynamics.

Timeline — Proximity to first expected resolution or bellwether trial, current discovery or Daubert phase, and estimated time-to-value for a signed plaintiff.

Verdicts — Confirmed plaintiff jury verdicts, bellwether trial win/loss record, and size or certainty of any established settlement fund. 1 = pre-trial · 2 = mixed early results · 3 = partial settlements or initial wins · 4 = confirmed large verdicts or funded settlement · 5 = landmark verdicts with formal settlement program.

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The Jacob Score is an editorial opinion based on publicly available data including court filings, published scientific literature, regulatory actions, and reported settlement information. It is not a guarantee of future litigation outcomes. Past verdicts and settlements are not predictive of future results in any specific case.

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