Bayer wins crucial US Supreme Court ruling over Roundup weedkiller

The U.S. Supreme Court on Thursday, June 20, 2024, overturned a $2.25 billion verdict against Bayer AG, ruling that a lower court improperly allowed a plaintiff to present "junk science" testimony linking its Roundup weedkiller to cancer. The decision significantly limits the ability of plaintiffs to use expert testimony in future lawsuits against the company. The Supreme Court stated that the U.S. District Court for the Northern District of California abused its discretion by admitting the testimony of plaintiffs' experts, whose opinions were not sufficiently reliable. This ruling impacts thousands of similar lawsuits pending against Bayer, which acquired Monsanto, the original maker of Roundup, in 2018. Bayer has faced over 150,000 claims alleging that Roundup's active ingredient, glyphosate, causes non-Hodgkin lymphoma. The company has already settled some cases, agreeing to pay approximately $10.9 billion in September 2020 to resolve a substantial portion of the claims. However, this latest Supreme Court decision provides Bayer with a crucial legal victory, potentially shielding it from future large-scale jury awards based on similar scientific arguments. The court's decision emphasizes the need for rigorous scientific validation in product liability cases.