Paraquat Lawsuit Updates
Last updated: September 5, 2026
Most of the people in this litigation are farmers, farmworkers and licensed applicators who sprayed paraquat for years and were diagnosed with Parkinson’s disease long afterward. Many of them are waiting on a settlement that both sides agreed to in April 2025 and that still has not paid anyone. That wait is the story of this litigation in September 2026, and a Supreme Court ruling in the Roundup cases has now been added on top of it.
This page is general legal education, not legal advice, and it reports on litigation that keeps moving. Nothing here evaluates any individual reader’s claim or creates an attorney-client relationship.
Where the Paraquat Litigation Stands Now
The federal cases, In re: Paraquat Products Liability Litigation, MDL No. 3004, sit before Chief Judge Nancy J. Rosenstengel in the Southern District of Illinois. Reported counts put the number pending at roughly 6,660 in early September 2026, up from about 6,655 at the start of August. That is close to flat, and it has been close to flat all year. Around 175 new federal cases were filed in the first half of 2026, and lawyers are still taking them.
Most case-specific work in the MDL has been paused since spring 2025 so both sides can finish the settlement. The pause has been extended several times. A bellwether trial that had been set for October 2025 was called off.
A second group of cases, more than a thousand of them, sits in the Philadelphia Court of Common Pleas. Syngenta has tried more than once to move those cases out of that court, and in July 2026 a judge decided they stay where they are.
No paraquat case has reached a jury yet. Syngenta has settled cases as their trial dates came up, including a Philadelphia case that was days from starting in late January 2026. A California state case is now scheduled for March 2027.
Paraquat cases are still being filed. The settlement has not closed the litigation, and lawyers are still reviewing new claims while it is being finalized.
Check Whether You May QualifyThe Settlement That Has Not Closed
In April 2025 the parties signed a letter agreement meant to resolve many of the cases in the MDL. Nearly a year and a half later, the terms have never been made public. There is no announced total value, no announced range of individual payments, and no announced cutoff for who is covered. Anyone quoting you a paraquat settlement figure is estimating from other litigation, not reporting a number that exists.
The machinery around the settlement has kept being built, which is the clearest sign it is real. A special master has been in place since 2021. A lien resolution administrator was appointed in February 2026 to sort out medical liens against any recovery. In March 2026 both sides jointly asked the court to set up a qualified settlement fund, which is a court-supervised account that holds the money before individual payments go out.
In June 2026 the judge said offers were going out to individual claimants and that the process had been slow. Many people have accepted. The people declining are concentrated in a small number of law firms, and the court has directed anyone planning to opt out to meet with the special master first so the decision is made with a clear picture of what comes after it. If you have a case and that choice is in front of you, it belongs with your own lawyer, and it has a deadline on it.
What the Roundup Ruling Could Mean Here
On June 25, 2026 the Supreme Court decided Monsanto Co. v. Durnell and held, 7–2, that federal pesticide law blocks state failure-to-warn claims built on a label the EPA approved. Paraquat cases are largely built on the same kind of claim, that Syngenta and Chevron never warned anyone the herbicide could cause Parkinson’s disease.
Syngenta saw this coming. It filed a motion in February 2026 asking the court to throw out part of the case on that ground, and suggested the judge wait for the Supreme Court before ruling. After Durnell came down, Syngenta had thirty days to add to its motion and the plaintiffs thirty days after that to answer. No ruling had come by late summer, and one is not expected quickly.
Worth knowing: this fight is older than the ruling. Paraquat complaints filed years earlier already carried a paragraph saying the claims sought no labeling requirement beyond what federal law demanded, and recasting the failures as having made the product misbranded under that same federal law. Plaintiffs’ lawyers saw the argument coming and pleaded around it well before the Supreme Court took the Roundup case. Whether that wording holds up is now the court’s to decide.
How much of Durnell carries across is the open question, and it is genuinely open. Paraquat’s regulatory history is not Roundup’s, and claims that do not depend on what the label said are a different argument. Our fuller write-up of the decision is on Monsanto v. Durnell: What the Supreme Court Held, and the knock-on effects in the Roundup cases themselves are tracked on Roundup Lawsuit Updates.
Recent Paraquat Developments
A pesticide has to be registered with the state before anyone can sell or use it in California. Every company that made a paraquat product has now cancelled its own registration, the last of them on August 6. The state did not pass a ban and did not find that paraquat causes Parkinson’s disease. What happened is that California’s pesticide regulator reopened its review of paraquat in late 2024 and told the manufacturers to fill gaps in the human health data by June 5, 2026, and the companies pulled their products instead.
Nothing stops on a single date. Licensed dealers can keep selling stock they already hold for two years after each product’s cancellation takes effect, and growers can keep applying what they have as long as they follow the label. Syngenta’s Gramoxone runs until April 1, 2028. Paraquat also remains registered federally and legal in other states.
Syngenta withdrew paraquat from the Australian market after the government there imposed new restrictions.
A judge rejected Syngenta’s effort to move the paraquat cases out of the Philadelphia Court of Common Pleas, keeping that second track intact.
The EPA announced it would bring scientists, subject-matter experts and farmworker advocates together to discuss paraquat’s documented safety problems. Part of what prompted the renewed attention is newer research on how much paraquat evaporates and drifts after it is sprayed, which bears on who gets exposed without ever handling it.
Monsanto Co. v. Durnell was decided 7–2 on federal preemption, and both sides in the paraquat MDL had already told the court the decision could affect some of the central claims here.
The ban takes effect in November. More than a dozen states have since introduced similar bills, and a bipartisan federal bill was introduced in June 2026.
The company announced it would end production during the year and did not mention the litigation in doing so. Days earlier, both sides had asked the court to create the settlement fund.
The agency said manufacturers must now show that current uses of paraquat are safe under real-world conditions, following a data call-in issued in late 2025.
More than a hundred cases were dropped from the MDL in June 2025 because a required questionnaire was never returned, and about thirty more went in June 2026 for not following a court order. Neither dented the litigation as a whole, and both are easy to miss in the case counts. For those families the case was simply over. Anyone with a claim should treat paperwork from their lawyer as the deadline it is.
MDL 3004 was created in June 2021 with fourteen cases. Syngenta settled an unspecified group of claims that year for $187.5 million. In April 2024 the judge excluded the testimony of the plaintiffs’ main expert on whether paraquat can cause Parkinson’s disease at all, and dismissed the four test cases that had been chosen for the first trials. A new group of test cases was selected later that year, and the case count kept climbing.
Filing deadlines run on state law, not on the settlement. Whether a particular exposure history and diagnosis supports a case is a question about your own facts, and the clock in your state has not paused while the MDL has.
Start a Free Case ReviewWhat the Bans Do and Do Not Change
Vermont has banned paraquat, California’s product registrations have been cancelled, Syngenta is winding down production, and more than a dozen states are weighing their own bills. All of that is about what happens from here. None of it undoes an exposure that already happened, and none of it changes the deadline for filing a claim about one. In California it does not even stop new exposure right away, because remaining stock can be sold and sprayed into 2028.
Headlines on these announcements often run ahead of what was actually decided. California is the clearest example. The state did not rule on Parkinson’s disease at all; the concerns its regulator raised on the way to the cancellations were possible thyroid effects, birth defects, and risk to birds and other wildlife. Parkinson’s is what people campaigned about, not what the agency found.
Where regulatory action can matter to a case is as evidence. Lawyers point to what a company chose to do when a regulator asked it for data, and argue about what that says regarding what the company knew. It is an argument, not a rule that follows automatically from a ban or a cancellation.
If you are trying to work out which product you actually used, that question comes before all of this, and Paraquat Products and Brand Names is the page for it.
What People Often Watch For Next
- Whether the court rules on Syngenta's preemption motion, and how broadly.
- Whether the settlement terms are ever made public, and what they cover.
- Whether the qualified settlement fund starts making payments.
- How many people opt out, and what happens to their cases afterward.
- Whether the March 2027 California trial actually goes ahead.
- What the EPA does after its roundtable and data call-in.
- Whether more states pass bans, and whether the federal bill moves.
How This Updates Page Fits With the Main Paraquat Page
The main Paraquat Parkinson’s Lawsuits page covers who these cases involve, what is alleged, and what records tend to matter. This page tracks what is moving. The science sits on Does Paraquat Cause Parkinson’s Disease? and What Is Paraquat?, and the wider category is on Pesticide Exposure Lawsuits.
Case counts, rulings and settlement details reported here reflect public reporting available on the date above and should be confirmed against the docket before being relied on.
Related Lawsuit Topics
Paraquat Parkinson’s Lawsuits
The main overview of who is involved and what is alleged.
Does Paraquat Cause Parkinson’s?
What the research has found, and where it is contested.
Paraquat Products and Brand Names
Identifying which product was used, going back to the 1970s.
What Is Paraquat?
What it is, what it was used on, and how it is regulated.
Roundup Lawsuit Updates
The other major herbicide litigation, and the ruling driving both.
Pesticide Exposure Lawsuits
How these claims fit into the broader toxic exposure category.
Find Out If You May Have a Case
If you or a family member used, mixed or applied paraquat and were later diagnosed with Parkinson’s disease, a free case review can look at two things. Whether that history supports a claim, and whether your state’s deadline still allows one to be filed.
Free and no obligation. Lawsuit Center is not a law firm and submitting a request does not create an attorney-client relationship.
