Roundup Cancer Lawsuit in California

What California residents should know

California residents are not necessarily limited to filing only in California state court. Many mass tort claims may be evaluated by national firms, filed in federal court, coordinated through MDL proceedings, or handled through another legal process.

State law may still matter for deadlines, damages, claim evaluation, and certain procedural issues.

What stands out about Roundup litigation in California?

California is the home of the Roundup litigation in two senses. The first landmark trial, Johnson v. Monsanto, was tried in San Francisco Superior Court in 2018: the jury awarded $289 million, the trial court reduced that to $78.5 million, and the California Court of Appeal further reduced the award to about $20.5 million in 2020.

California is also the only state to formally list glyphosate as a carcinogen, under Proposition 65 (2017), though that listing has itself been the subject of separate litigation.

The national federal proceeding, MDL No. 2741, is based in the Northern District of California before Judge Vince Chhabria, so California is the transferee forum for Roundup cases nationwide. Many claims are also being resolved through the proposed $7.25 billion nationwide class settlement that received preliminary approval in Missouri state court in March 2026.

Sources: NBC Bay Area — appeals court cuts Johnson award to $20.5M (2020); California OEHHA — Proposition 65 list; King v. Monsanto preliminary approval order (Mar. 4, 2026); JPML — pending MDL dockets.

Possible eligibility factors

California residents researching a Roundup cancer lawsuit usually need to connect product exposure with a documented non-Hodgkin lymphoma diagnosis. The strongest review starts with a clear timeline: where Roundup was used, how often it was used, whether exposure was occupational or residential, and when the diagnosis occurred.

• Roundup use, purchase, employment, landscaping, agricultural, school, park, golf-course, or groundskeeping exposure history.
• Medical diagnosis, pathology, oncology, and treatment records showing non-Hodgkin lymphoma or a related lymphoma subtype.
• Approximate dates of use, exposure, diagnosis, and treatment.
• Information about prior settlements, releases, opt-out paperwork, alternative exposures, or other facts a lawyer may need to evaluate.

How do California Roundup lawsuit deadlines work?

California deadline review can depend on diagnosis date, discovery facts, exposure history, death date in a wrongful-death matter, and any prior Roundup claim activity. The national MDL being located in California does not create one California-only deadline for every claimant nationwide.

California residents should gather first and last exposure dates, diagnosis date, treatment dates, and any settlement or release documents before assuming a claim is timely or expired.

What records support Roundup claims in California?

• Purchase receipts, product photos, farm, landscaping, groundskeeping, municipal, school, golf-course, or property-maintenance records.
• Records showing repeated glyphosate or Roundup use, mixing, spraying, application frequency, and exposure years.
• Oncology records, pathology reports, biopsy records, treatment history, and non-Hodgkin lymphoma subtype records.
• Prior claim forms, settlement paperwork, releases, opt-out documents, or law-firm communications if any exist.

What exposure and legal context matter in California?

State residents may have encountered Roundup through agricultural use, residential use, landscaping, groundskeeping, parks, schools, golf courses, or similar settings.

Where are California Roundup cases handled?

Living in California does not necessarily mean the case will be filed only in California. Claims may be evaluated by national firms, filed in federal court, coordinated through MDL proceedings, or handled through another legal process.

Federal courts in California

• Northern District of California
• Eastern District of California
• Central District of California
• Southern District of California

What is the filing deadline for Roundup lawsuits in California?

For a California resident researching Roundup claims, the starting point is usually California's general personal injury period: 2 years under Cal. Code Civ. Proc. § 335.1. That is only a starting point, not a final legal deadline for every person.

The real filing deadline can depend on diagnosis date, when the injury and possible cause were discovered, exposure location, wrongful-death issues, prior claim paperwork, and whether the case is filed directly, transferred to an MDL, or handled through another process.

Discovery-rule note: California applies a discovery rule: the period generally runs from when a plaintiff discovers, or reasonably should have discovered, the injury and its wrongful cause.

How long do California residents have to file?

California's personal injury statute of limitations applicable to product liability claims is 2 years (Cal. Code Civ. Proc. § 335.1). Accrual timing, tolling, and repose periods can still change the real deadline in an individual case.

• Filing period: 2 years — Cal. Code Civ. Proc. § 335.1.
• Discovery rule: California applies a discovery rule: the period generally runs from when a plaintiff discovers, or reasonably should have discovered, the injury and its wrongful cause.

Because the controlling deadline depends on diagnosis date, discovery facts, exposure history, wrongful-death rules, and how the claim is filed, only a licensed attorney can confirm the deadline that applies to a specific situation. This page is general legal information, not legal advice.

What should California residents ask a lawyer?

• What proof do you need of Roundup or glyphosate exposure and years of use?
• How do lymphoma subtype, diagnosis date, and oncology records affect review?
• Could prior settlement paperwork, releases, or opt-out documents affect my options?
• How do state filing deadlines apply to my diagnosis and discovery timeline?
• Would my claim be handled locally, nationally, or through the MDL?
• Are there upfront costs?