(October 1, 2018, 7:21 AM EDT) -- COLUMBUS, Ohio — E.I. du Pont de Nemours and Co. on Sept. 20 filed a brief in the Ohio federal court that is home to the multidistrict litigation for alleged injuries connected to exposure to perfluorooctanoic acid (known as C8), contending that “at least 25 cases” filed after a global settlement was reached “appear to have foundational issues with viability” (In re: E.I. du Pont de Nemours and Co. C8 Personal Injury Litigation, MDL No. 2433, No. 13-2433, S.D. Ohio)....