
The number of total cases filed in the Philadelphia Court of Common Please has grown to 1,136.
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People have filed paraquat lawsuits after suffering health effects from Parkinson’s disease. Learn more.
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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 U.S. citizens have filed paraquat lawsuits against the manufacturers Syngenta and Chevron and some distributors. Find out if you are eligible for a paraquat lawsuit, too.
March 2025: There are now 1,136 pending lawsuits in the Philadelphia County Court of Common Pleas.
May 2024: Judge Joshua Roberts scheduled four bellwether trial dates in 2025 for paraquat cases pending in the Philadelphia County Court of Common Pleas. Motley Rice attorney Fidelma Fitzpatrick serves as co-lead counsel of the Plaintiffs’ Executive Committee for the Philadelphia mass tort. Motley Rice attorney Mike Daly serves as Plaintiffs’ Liaison Counsel.
April 2024: A few bellwether cases in the federal paraquat MDL were dismissed. Other MDL cases still remain against Syngenta, Chevron and the other named defendants in the MDL or in the state cases. Federal MDL rulings do not impact the Philadelphia court paraquat cases.
Read the full paraquat lawsuit update timeline.
People who have developed Parkinson’s disease after being exposed to paraquat are filing lawsuits against paraquat manufacturers and distributors. These include:
These lawsuits seek compensation for the victims’ injuries.
Some of the paraquat lawsuits also include claims from victims’ spouses. These lawsuits claim Loss of Consortium. This is a legal term describing the losses a family or spouse may experience because of injuries to the victim.
Paraquat dichloride is a toxic chemical used as an herbicide. Paraquat was first sold in the U.S. in 1964 and has been used for decades to control weeds and invasive grasses. Farmers and farmworkers use it on many crops, including corn, soybeans, cotton, and vineyard grapes. It is the key ingredient in many spray herbicides, including Gramoxone, Firestorm, Helmquat and Parazone.
Other companies with paraquat products include:
Paraquat is classified by the U.S. Environmental Protection Agency (EPA) as a restricted use product. It is not available to the general public. According to the EPA, to use paraquat, “you must be a certified applicator and you must take the paraquat-specific training.”
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 the U.S.
Paraquat kills plants by disrupting necessary cellular functions. Once it gets through the plant's skin, paraquat causes a chemical reaction that hinders photosynthesis and damages other components of the plant’s cells. Paraquat is made more effective by adding surfactants, a type of chemical that lets paraquat stick to plants so it can be more easily absorbed.
Just as paraquat is effective on plant cells, it can have a similar effect on animal cells that absorb it. It disrupts cellular respiration in animal cells, like those found in humans. Plaintiffs allege as early as the 1950s, Syngenta was aware that paraquat could have a toxic effect on the human nervous system and that it could be absorbed through the skin.
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 banned, or have severely restricted the use of, paraquat, along with 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. While the EPA has suggested some restrictions to the use of paraquat, it has yet to implement a full ban despite the evidence of harm.
In October 2020, the EPA proposed new safety measures to “reduce risks associated with paraquat in order 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.
Paraquat exposure can lead to serious health effects, according to the Centers for Disease Control and Prevention (CDC). Many scientists have found the herbicide is linked to an increased risk of developing Parkinson’s disease. It can also be dangerous if ingested or inhaled or if it contacts the skin.
Paraquat’s high toxicity can cause life-threatening side effects. Paraquat induces oxidative stress, which can lead to a host of health problems. Oxidative stress changes the structure and function of important parts of cells, leading to serious cell damage.
Paraquat exposure can lead to many types of health effects. As with Parkinson’s disease, the effects of paraquat poisoning may have serious and potentially life-threatening impacts on people.
Symptoms related to paraquat poisoning include:
If you or a loved one are showing signs of sickness after being exposed to paraquat, seek immediate medical care.
Many studies have found strong associations between paraquat exposure over a long time and Parkinson’s disease. These consistent findings suggest that the use of paraquat causes an increased risk of Parkinson’s.
Parkinson’s disease is an irreversible neurological disorder. Symptoms typically become worse over time.
Common Parkinson’s disease symptoms include:
If you or a loved one experiences these symptoms, you should see your doctor immediately.
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.
“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.
Over the years, the scientific evidence showing strong links between paraquat exposure and Parkinson’s disease has been mounting.
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.
People who have developed Parkinson's disease after exposure to paraquat may be eligible to take legal action. 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.
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.
There are more than 1,000 plaintiffs in the Philadelphia County Court of Common Pleas cases. The federal MDL had 5,883 actions pending as of October 1, 2024.
As of March 2025, 1,136 paraquat lawsuits have been filed in the Philadelphia Court of Common Pleas. Judge Joshua Roberts is overseeing the lawsuits. The Court has issued an order setting the first group of bellwether trials for March 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 March 2025.
In addition, a group of cases have been filed in Delaware state court and motion practice is underway.
There is one federal multidistrict litigation (MDL) docket related to paraquat. It is located in the Southern District of Illinois Court System. 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-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.
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
51 more Paraquat lawsuits have been filed in the Philadelphia Court of Common Pleas. This brings the total number of active cases to 993.
11.04.24
There are now 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 are now 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 a recent Supreme Court ruling (Mallory v Norfolk Southern Railway) 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.
02.01.24
U.S. District Judge Nancy Rosenstengel has largely denied the motions to dismiss submitted by Syngenta and Chevron 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 there is no link 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.
This choice to look only at death records would make it harder to show a link between the pesticide and Parkinson’s disease, which other studies have shown.
02.01.24
The Iowa legislature introduced a bill that would reduce the ability of Iowans to sue manufacturers of pesticides for not alerting people to health risks of their products.
The bill would still allow individuals to bring personal injury claims for health issues they suffered from pesticide exposure. The bill would protect manufacturers only from liability for failing to warn people about potential health risks that aren’t added to their warning labels.
Some in the state have warned that passing the bill would result in fewer people being able to seek justice for the harms they suffer from 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 it.
This is in spite of the vast body of scientific research that indicates a link between paraquat exposure and severe neurological 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
Judge Roberts, presiding over the state paraquat litigation in Philadelphia has issued several rulings in favor of the plaintiffs.
He overruled objections to the plaintiffs’ complaint from both Syngenta and Chevron. He denied Syngenta’s motion for protective order, which could have prevented disclosure of information. Finally, Judge Roberts lifted any stays on discovery in the consolidated paraquat cases. This means that discovery may now 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.
Here are questions people often ask about the paraquat toxic exposure lawsuits.
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:
Keep in mind that if you’re experiencing 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. Your toxic exposure attorney can review your case and help you understand your options.
Proving paraquat exposure will depend on how you may have been exposed. 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 5,883 plaintiffs as of early October. Motley Rice attorneys aren’t currently representing plaintiffs in the MDL.
Most paraquat Parkinson’s lawsuits are still in early stages and have not yet reached settlements. However, Syngenta’s financial records show some payouts have already happened. The company’s 2022 Financial Report shows a $187.5 million settlement to multiple claimants in 2021.
Syngenta is no stranger to large settlements and paid $1.5 billion to settle claims related to its pesticide Viptera in 2018 and 2019.
Motley Rice was not involved in this settlement or the Viptera settlements.
If you or a loved one was harmed by paraquat, you may also be eligible to file a lawsuit. A successful paraquat lawsuit can help compel Syngenta to pay for medical care costs to provide financial peace of mind. Speak with paraquat attorneys at our law firm to find out if you are eligible.
Plaintiffs in paraquat lawsuits are alleging both economic and non-economic damages for the injuries they’ve suffered. As part of their lawsuits, plaintiffs are requesting the following types of relief for the harm they’ve suffered:
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 be helpful to speak with an attorney who has experience handling toxic exposure claims to understand the legal options available to you.
Our 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 to improve environmental standards and protections.
An example of 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 created a public nuisance by exposing residents to toxic lead paint.
Why are people filing paraquat lawsuits?
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