JEFFERSON CITY, MO. — An attorney opposed to a proposed $7.25 billion nationwide Roundup settlement filed paperwork on Friday to move the case from Missouri state court to federal court. The settlement covers thousands of claims that the maker of Roundup weedkiller failed to warn people the product could cause cancer.

The proposed settlement was filed in February in St. Louis Circuit Court in Missouri, and a hearing is scheduled for July 9 in state court. People face a June 4 deadline to opt out of the settlement.

Ashley Keller, the attorney who filed Friday's paperwork, filed objections opting out of the settlement on behalf of several clients. "This is a huge settlement that is extinguishing the rights of tens of thousands of cancer victims," Keller said. "It was rushed in to state court," she said.

The dispute over who should preside over the proposed settlement could disrupt its deadlines and delay a resolution on whether it should be approved. Christopher Seeger is proposed as a claimants' representative in the settlement.

The settlement is designed to address most pending Roundup lawsuits and additional cases brought in coming years by people exposed to Roundup. It calls for Bayer to make annual payments into a special fund for up to 21 years, totaling as much as $7.25 billion. An agricultural, industrial, or turf worker exposed at length to Roundup and diagnosed with an aggressive form of non-Hodgkin lymphoma before age 60 would receive an average of $165,000, while a person diagnosed at age 78 or older would receive an average of $10,000. If too many claimants opt out, Bayer reserves the right to cancel the settlement.

Bayer acquired Missouri-based Monsanto in 2018. The company disputes that glyphosate, the active ingredient in Roundup, can cause non-Hodgkin lymphoma and contends that state-level claims that it failed to warn about cancer risks should be barred because it followed federal labeling standards that do not require a warning. The Environmental Protection Agency has determined that glyphosate is not likely to be carcinogenic to humans when used as directed. In 2015, the World Health Organization's International Agency for Research on Cancer classified glyphosate as "probably carcinogenic."

The U.S. Supreme Court is hearing a case brought by John Durnell that could block thousands of lawsuits filed in state courts against Bayer. Durnell says he developed non-Hodgkin lymphoma after more than 20 years of spraying Roundup on a community garden in St. Louis and is not covered by the proposed class-action settlement. A decision in his case is expected by the end of June.