
There were 1,163 total cases filed in the Philadelphia Court of Common Pleas.
Active case
People have filed paraquat lawsuits after suffering health effects from Parkinson’s disease. Learn more.
Connect with an attorneyActive case
Paraquat is a toxic chemical used as an herbicide. A growing number of scientists have reported finding a link between paraquat exposure and neurological issues, including Parkinson’s disease. Thousands of people have filed paraquat lawsuits against manufacturers Syngenta and Chevron and some distributors. Find out if you are eligible for a paraquat lawsuit.
Read the full paraquat lawsuit update timeline.
Paraquat dichloride is a toxic chemical that kills plants. It has been in use as a herbicide in the U.S. since 1964. In the decades since then, it has been sold and widely used for controlling weeds and invasive grasses. Cotton, corn, soybeans and vineyard grapes are among the crops where farmers and farm crews use it to deter weeds and grasses. Gramoxone, Firestorm, Helmquat, Parazone and other spray herbicides incorporate paraquat as a key ingredient.
Chevron, FMC Corporation and Syngenta are associated with the original companies that created and distributed the herbicide. They also distributed, marketed and manufactured the drug in the U.S. Other companies with paraquat products include:
The U.S. Environmental Protection Agency (EPA) classifies paraquat as a restricted use product. It is not available to the general public. The EPA requires certification and paraquat-specific training for people to use the herbicide.
Herbicide: A chemical used to control unwanted vegetation, an herbicide may minimize vegetation in conflict with farmed plants. In other cases, an herbicide might improve harvesting.
Mass tort: This is a legal case where a group of people who’ve suffered a similar harm file suit against the same defendant(s). Class action lawsuits and multidistrict litigation (MDL) are types of mass tort lawsuits.
Multidistrict litigation (MDL): This is a type of mass tort in which people who’ve suffered the same or similar harm seek compensation against the same defendant(s). Courts often organize MDLs to handle the pre-trial part of cases more efficiently. When plaintiffs in an MDL reach a favorable resolution, they can be compensated individually rather than out of a shared amount. The resolutions may be verdicts or settlements.
Paraquat: This toxic weed-killing chemical is banned in around 70 countries but not in the U.S.
Paraquat kills plants by disrupting cellular functions they need to survive. It penetrates the plant's skin and causes a chemical reaction that hinders photosynthesis and damages the plant’s cells. Paraquat also contains surfactants, which are chemicals that help paraquat stick to plants so it can be more easily absorbed.
Paraquat is also a danger to animal cells. It disrupts cellular respiration in human and animal cells. Plaintiffs claim Syngenta knew that paraquat:
People are filing paraquat lawsuits to seek compensation for their and their loved ones’ injuries. Those who were injured by paraquat file personal injury lawsuits. Others who had a loved one pass away because of paraquat injuries file wrongful death lawsuits.
Some of the paraquat lawsuits also include claims from victims’ spouses. These lawsuits claim Loss of Consortium. This legal term describes the losses a family or spouse may experience because of the victim's injuries. State court cases are pending in California, Delaware, Illinois, Florida, Pennsylvania and Washington. State courts may also merge paraquat cases, as the Court of Common Pleas of Philadelphia did. Multiple consolidated Delaware state court paraquat cases are also proceeding.
An ongoing multidistrict litigation (MDL) docket consolidates claims filed in federal court.
“People who used and were exposed to paraquat had no idea about the dangers of paraquat because the manufacturers and distributors failed to warn them. These hard-working farmers, workers and individuals had a right to know so they could have potentially avoided exposure to this highly toxic herbicide. It is an honor to represent these individuals and their families and pursue justice on their behalf,” said Fidelma Fitzpatrick, a trial attorney with Motley Rice LLC who represents hundreds of clients in filed paraquat cases.
People who have developed Parkinson’s disease after being exposed to paraquat are filing lawsuits against paraquat manufacturers and distributors, including:
To qualify for a paraquat lawsuit, you must have been exposed to paraquat and suffered injuries that came from that exposure. If you believe you’ve been harmed by paraquat exposure, seek medical treatment. You can also consider speaking to a lawyer with experience in toxic exposure claims to evaluate your legal options.
To be eligible to file a lawsuit, you’ll need to show or testify that:
If you’re having health problems as a result of exposure to a toxic herbicide or weedkiller other than paraquat, you may be eligible to file a lawsuit against the manufacturer. Roundup and dacthal have also been connected to human health issues. Your toxic exposure attorney can review your case and help you understand your options.
People who have developed Parkinson's disease after exposure to paraquat may be eligible to sue. Individuals who have filed lawsuits against the manufacturers and distributors of paraquat (Syngenta, Chevron and FMC Corporation) include:
These are just a few of the people who have developed Parkinson’s after exposure to paraquat. They represent thousands of people who have had similar experiences.
If you or someone you love was directly exposed to paraquat and later diagnosed with Parkinson’s disease, you may have a claim. For more information on filing a paraquat lawsuit, reach toxic exposure attorney Fidelma Fitzpatrick by email or call 1.800.768.4026.
The Centers for Disease Control and Prevention (CDC) report that paraquat exposure is dangerous and can cause serious health effects. If someone eats or breathes the chemical or has skin contact with it, the health consequences can be serious. Plaintiffs argue there is strong evidence that links the herbicide to a higher risk of Parkinson’s disease.
Paraquat is extremely toxic and the side effects of contact can be life-threatening. Paraquat activates oxidative stress, which affects cells, including changing their structure and function. Over time, those changes can cause extensive cell damage.
Paraquat exposure can lead to many types of health effects. As with Parkinson’s disease, paraquat poisoning may have life-threatening impacts on people.
Symptoms related to paraquat poisoning include:
If you or a loved one shows signs of sickness after paraquat exposure, seek immediate medical care.
Parkinson’s disease is a progressive neurodegenerative brain disorder. It affects parts of the nervous system that control movement. It also interferes with the part of the brain that generates dopamine. Primary symptoms include:
Secondary symptoms can also appear as:
Many studies link long-term paraquat exposure to Parkinson’s disease. These consistent findings suggest that paraquat use increases the risk of Parkinson’s.
If you or a loved one experiences possible Parkinson’s disease symptoms, see your doctor immediately.
After you have sought medical care, a paraquat lawyer can help explain your paraquat legal options. The options may include filing a personal injury lawsuit of your own. Product liability lawsuits seek to hold the manufacturers and distributors of paraquat accountable. Although there is never a guarantee, lawsuits may result in a settlement or verdict award.
If you suspect that you may have symptoms of Parkinson’s disease, please contact your primary healthcare provider. You can also learn more about diagnosis and treatment of the disease from these organizations:
Scientific evidence has long shown strong links between paraquat exposure and Parkinson’s disease.
These studies, along with others, consistently point to the increased risk of developing Parkinson’s disease after paraquat exposure. Studies like this show why so many countries have banned the use of paraquat.
Dozens of countries have banned paraquat, including the European Union (EU) and China. Kuwait first banned it in 1985.
Despite many countries having acted already, paraquat is not yet banned in the U.S.
Here is a partial list of countries that have either banned or severely restricted the use of paraquat and the year the country banned it.
Bahrain 2015 | Morocco 2021 |
Brazil 2020 | Mozambique 2014 |
Burkina Faso 2011 | Niger 2011 |
Cabo Verde 2011 | Norway 1995 |
Cambodia 2003 | Oman 2014 |
Chad 2011 | Peru 2022 |
China 2020 | Qatar 2015 |
Côte d’Ivoire 2004 | Saudi Arabia 2015 |
Emirates 2015 | Senegal 2011 |
EU - 27 Countries 2007-2008 | Serbia 2009 |
Fiji 2020 | South Korea 2011 |
Gambia 2011 | Sri Lanka 2012 |
Guinea-bissau 2011 | Switzerland 2002 |
Kuwait 1985 | Taiwan 2018 |
Lao PDR 2011 | Thailand 2020 |
Malawi 2019 | Togo 2015 |
Malaysia 2005-2006, 2020 | Turkey 2014 |
Maldives 2022 | UK 2008 |
Mali 2011 | United Arab Emirates 2015 |
Mauritania 2011 | Vietnam 2019 |
The U.S. has not yet banned paraquat despite the evidence of harm. The EPA has suggested some restrictions on paraquat use.
In October 2020, the EPA proposed new safety measures to “better protect human health and the environment.” An interim decision was released in July 2021. Measures outlined by the EPA include, but are not limited to:
People most at risk for paraquat exposure include agricultural workers, their families and people who live near farms.
Thousands of impacted people and their families have filed lawsuits against Syngenta, Chevron, FMC and other parties responsible for manufacturing and distributing paraquat. These lawsuits have been filed in both state and federal courts.
As of April 2025, there were:
Judge Joshua Roberts oversees the lawsuits filed in the Philadelphia Court of Common Pleas. The court has issued an order setting the first bellwether trial for June 2025.
Motley Rice attorney Fidelma Fitzpatrick is co-lead counsel and a member of the Plaintiffs’ Executive Committee (PEC) for the Pennsylvania mass tort. Mike Daly, of our Philadelphia office, is liaison counsel for the Pennsylvania mass tort. Several other Motley Rice attorneys also represent plaintiffs.
In January 2024, Judge Roberts denied defendants’ multiple preliminary objections arguments to the initial pleadings. Case-specific discovery has concluded and the first set of bellwether candidates are currently being selected for 2025 trials. Four cases will be selected to go to trial in 2025 with the first trial beginning in June 2025.
Cases have also been filed in state courts in:
A federal multidistrict litigation (MDL) docket related to paraquat is in the Southern District of Illinois. An MDL docket allows federal lawsuits with similar details and defendants to be decided by the same court. MDLs can help expedite the legal process.
The paraquat MDL, called In re: Paraquat Products Liability Litigation, MDL No. 3004, was established in 2021. Motley Rice is not involved in the federal MDL. Motley Rice paraquat lawyers have filed cases in Pennsylvania state court.
If you or a loved one was directly exposed to paraquat and later diagnosed with Parkinson’s disease, you may have a claim. For more information on your options for legal actions, contact toxic exposure lawyer Fidelma Fitzpatrick by email or call 1.800.768.4026.
4.02.25
There were 1,163 total cases filed in the Philadelphia Court of Common Pleas.
3.03.25
The number of total cases filed in the Philadelphia Court of Common Please has grown to 1,136.
2.04.25
There are now 1,066 paraquat cases pending before the Philadelphia Court of Common Pleas.
1.02.25
The total number of cases in the Philadelphia Court of Common Pleas increased to 1,026.
12.01.24
The total number of active cases is 993, as 51 more paraquat lawsuits have been filed in the Philadelphia Court of Common Pleas.
11.04.24
There were 942 paraquat lawsuits pending in the Philadelphia Court of Common Pleas. Plaintiffs may continue to file suit in Pennsylvania to join this consolidated litigation.
10.04.24
There were more than 900 paraquat lawsuits pending in the Philadelphia County Court of Common Pleas. Plaintiffs may continue to file suit in Pennsylvania to join this consolidated litigation.
09.01.24
The number of lawsuits pending in the Philadelphia County Court of Common Pleas continued to grow. As of mid-to-late September, more than 880 paraquat lawsuits were pending.
The federal MDL grew to 5,891 pending cases.
08.13.24
California passed a new law requiring its Department of Pesticide Regulation to reevaluate the use of paraquat. This review came after researchers at UCLA suggested a link between paraquat exposure and Parkinson’s disease. In 2022 alone, more than 373,000 pounds of paraquat were sprayed throughout the state.
08.13.24
Approximately 830 paraquat lawsuits were pending in the Philadelphia County Court of Common Pleas.
07.01.24
There were 774 paraquat lawsuits pending in the Philadelphia County Court of Common Pleas.
06.01.24
As of June 2024, there were 728 paraquat cases pending in the Pennsylvania state litigation. Defendants continue to try to strike down this group of lawsuits.
Motley Rice added litigator Mike Daly to its Philadelphia office, where the court is hearing paraquat cases. The firm intends to grow its presence in mass tort litigation related to defective medical devices, harmful pharmaceuticals, environmental hazards and toxic torts.
04.01.24
Syngenta, a defendant in the paraquat mass tort litigation, argued for a review of a statute that might redefine the jurisdictions for plaintiffs. Syngenta said nearly 600 of the plaintiffs aren’t from Pennsylvania, where the case is being heard. The company’s attorneys believe that the Supreme Court's Mallory v Norfolk Southern Railway ruling might impact the jurisdiction for hundreds of plaintiffs. Motley Rice attorneys successfully briefed this issue to the Pennsylvania Superior Court, resulting in the denial of Syngenta’s request for immediate review of the statute. Syngenta has sought further review of this denial to the Pennsylvania Supreme Court. On February 19, 2025, the Pennsylvania Supreme Court denied review.
02.01.24
U.S. District Judge Nancy Rosenstengel largely denied Syngenta and Chevron's motions in the paraquat MDL. The judge granted a motion to dismiss on plaintiffs’ claims of public nuisance. However, Judge Rosenstengel’s denial of the other motions to dismiss means that thousands of claims against the manufacturers and distributors of paraquat may still go forward in federal court.
02.01.24
The BBC investigated claims from Syngenta that no link exists between paraquat and Parkinson’s disease. BBC found that Syngenta’s claims may be misleading.
The BBC reported that the company’s chief medical officer looked only at the death records of staff and did not include medical records. Death records may not always include people who had Parkinson’s disease. This led to an underreporting of people potentially impacted by paraquat. Reviewing only death records would make it harder to link the pesticide to Parkinson’s disease, which other studies have shown.
02.01.24
The Iowa legislature introduced a bill that would limit Iowa citizens’ ability to sue pesticide manufacturers for failing to disclose the health risks of their products.
The bill’s backers say it would’ve allowed individuals to bring personal injury claims for health issues they suffered from pesticide exposure. But it would also protect manufacturers only from liability for failing to warn people about potential health risks that aren’t added to their warning labels. Passing the bill could’ve made it harder for people to seek justice for being harmed by pesticides like paraquat.
01.01.24
The Environmental Protection Agency (EPA) again failed to ban the use of paraquat. The EPA decided to maintain its 2021 Interim Registration Review Decision to not ban paraquat.
Most scientific research links paraquat exposure to conditions like Parkinson’s disease. The 2021 decision led to ongoing litigation from environmental and public safety groups. The EPA can still change its position because it has not yet issued a final report. It’s expected that the EPA will issue a final report in 2025.
01.01.24
In the Philadelphia court, Judge Roberts issued several rulings in plaintiffs' favor.
He overruled objections to the plaintiffs’ complaint from both Syngenta and Chevron. He denied Syngenta’s motion for a protective order, which could have prevented disclosure of information. Finally, Judge Roberts lifted any stays on discovery in the consolidated paraquat cases. This meant that discovery could begin.
01.01.24
U.S. District Judge Nancy Rosenstengel ordered a limited discovery for 25 plaintiffs in the federal paraquat MDL. The MDL had over 5,000 plaintiffs.
12.04.23
U.S. District Judge Nancy Rosenstengel denied a motion from Syngenta to compel Dr. Earl Ray Dorsey to produce certain documents.
Syngenta requested documents relating to a 2023 study co-authored by Dr. Dorsey on the relationship between exposure to paraquat and Parkinson’s disease. Syngenta alleged that the plaintiff’s lawyer encouraged Dr. Dorsey to write and release the study to be cited in the MDL.
Dr. Dorsey contested the production of non-public documentation relating to the study. Judge Rosenstengel argued that the documents were minimally valuable and that enough scientific debate was already available.
08.24.23
U.S. District Judge Nancy Rosenstengel canceled the October 2023 trial date for the paraquat MDL bellwether cases.
07.28.23
U.S. District Judge Nancy Rosenstengel ordered a hearing for August 21, 2023, to evaluate the scientific evidence of the plaintiffs’ claims in the paraquat MDL.
The hearing included testimony from plaintiffs’ expert Dr. Martin Wells. The evaluation of the evidence impacted the timeline for potential bellwether trials. The parties had until September 8, 2023, to submit closing briefs on the hearing.
06.02.23
An investigation by the Guardian and the New Lede discovered internal documents from Syngenta that indicated it had tried to influence scientific research on paraquat.
According to the investigation, the documents showed that Syngenta misled regulators about the existence of unfavorable internal research, recruited researchers who published scientific literature without disclosing their link to the paraquat manufacturer and had lawyers edit scientific reports to minimize damaging language.
Proving paraquat exposure will depend on how you may have been exposed but may include affidavits, testimony and physical records. For example, agricultural workers and landscapers may have business receipts or employment records that can help show exposure. A paraquat attorney can help you gather evidence of paraquat exposure.
No, there’s no paraquat class action lawsuit. However, large, consolidated litigations are ongoing in state and federal court. A state court docket in Philadelphia is proceeding well. More than 1,000 plaintiffs have filed suit against chemical companies in the Philadelphia County Court of Common Pleas for paraquat exposure. Motley Rice is working closely with this litigation and accepting new plaintiff filings.
A federal multidistrict litigation (MDL) docket had 5,825 plaintiffs as of January 2, 2025. Motley Rice attorneys aren’t currently representing plaintiffs in the MDL.
Most paraquat Parkinson’s disease lawsuits are still in early stages and have not yet reached settlements. While a settlement is not guranteed, Syngenta’s financial records show some payouts have already happened.
Plaintiffs in paraquat lawsuits are alleging economic and non-economic damages for their injuries. As part of their lawsuits, plaintiffs are requesting relief for the harm they’ve suffered, such as:
While the specific claims may vary, the types of damages seen across paraquat litigation include:
The damages available to individual plaintiffs depend on the facts of their case. It can help to speak with an attorney with experience handling toxic exposure claims to explore your legal options.
Bellwether trials, which are considered test trials, are scheduled to begin in June 2025. Even after those cases settle or return a verdict, there will still be thousands of pending cases in state and federal courts. Some mass torts take years to settle all related cases, if a settlement is reached.
Motley Rice attorneys have extensive experience litigating toxic exposure and environmental damage cases for individuals, families, communities and states. Through our cases, we seek justice for our clients and improved environmental standards and protections.
Our experience includes representing people who developed non-Hodgkin lymphoma after being exposed to Roundup weed killer. The firm also obtained a landmark settlement for 10 cities and counties in California that alleged three lead pigment companies exposed residents to toxic lead paint.
What is paraquat?
Why are people filing paraquat lawsuits?
Who qualifies for a paraquat lawsuit?
Health effects related to paraquat
Studies on paraquat and Parkinson’s disease
Paraquat bans and safety measures
Current state of paraquat litigation
Paraquat lawsuit timeline
Frequently asked questions about paraquat lawsuits
Our toxic exposure litigation experience
Call us or fill out our online form with the details of your potential case.
Our team reviews your information to assess your potential case.
Talk with us about next steps.