The most recent development in the Paraquat MDL involves the effort by U.S. District Judge Nancy Rosenstengel to explore why some plaintiffs are not accepting settlements proposed by Syngenta over allegations that exposure to paraquat weed killing products causes Parkinson’s disease.
The judge ordered plaintiffs who do not agree to the terms of Syngenta’s settlement plan to meet with a special master to ensure that they are “making a fully informed decision not to participate.” The meeting is intended to force a direct discussion of the settlement terms, the plaintiff’s concerns, and what will be required if the plaintiff chooses to continue litigating. The judge also required that many plaintiffs choosing to opt out of the settlement undergo depositions by early August, along with “narrow third-party discovery” related to their use of paraquat.
Judge Rosenstengel noted that a significant number of plaintiffs not agreeing to the settlement come from just a few law firms, including the Nachawati Law Group, noting that 183 of the firm’s 217 paraquat clients had opted out of the settlement.
“The Court would like to gain a better understanding of the possible reasons for this high number of opt-out cases,” Rosenstengel wrote, and chose a portion of each law firm’s plaintiffs for a “full work-up.”
Non-settling plaintiffs were warned that they will eventually need to provide documentation and affidavits proving Paraquat use, Parkinson’s disease diagnosis, and other case-specific evidence.
Settlement negotiations have been underway for over a year, overseen by Special Master Randi Ellis. Judge Rosenstengel ordered repeated stays to keep cases from moving forward to trial to allow the settlement process to unfold.
In the paraquat lawsuits that are in the Philadelphia County Court of Common Pleas, plaintiffs are urging a Philadelphia judge to reject new attempts by defendants Syngenta and Chevron to move their cases out of the city. A similar request was denied in 2025.
Transferring the 14 cases would force those suffering from symptoms of Parkinson’s disease to restart their paraquat lawsuits in new jurisdictions where the evidentiary record has not been developed. If removed from Philadelphia, the cases could end up in the federal paraquat MDL.