( August 21, 2025, 2:10 PM EDT) -- RICHMOND, Va. — A split panel of the Fourth Circuit U.S. Court of Appeals has reversed a lower court’s ruling that granted summary judgment on standing to Union Carbide Corp. and its affiliate in a lawsuit alleging exposure to ethylene oxide (EtO), ruling that the plaintiffs properly allege elements of West Virginia’s medical monitoring tort and therefore have Article III standing. The majority also said that “none of the reasons for which the district court excluded” the plaintiffs’ expert was proper....