Mealey's (March 13, 2023, 1:28 PM EDT) -- RICHMOND, Va. — The Fourth Circuit U.S. Court of Appeals on March 10 affirmed summary judgment for Ethicon Inc. in a pelvic mesh case, agreeing that the plaintiff’s case-specific causation expert did not conduct a differential diagnosis and that a subsequent expert affidavit was untimely under deadlines established when the case resided in a multidistrict litigation....