Today’s case is a 7th U.S. Circuit Court of Appeals ruling that addresses the Indiana Product Liability Act requirement for expert testimony on causation when the issue is beyond the understanding of laypersons.The product liability claim involved an allegedly defective intrauterine device that broke when it was removed from the plaintiff’s uterus, leaving a fragment behind.In Dalton v. Teva North America, 2018 WL 2470634 (7th Cir. 2018), Cheryl Dalton sued Teva North America, manufacturer and distributor of …