Judge Says Expert Testimony Must Fit Disputed Facts, Limits What Is Admissible

( October 20, 2025, 2:28 PM EDT) -- WILMINGTON, Del. — A federal judge in Delaware agreed to limit testimony from an expert retained in a dispute over a contract for olivetol, an ingredient used in the manufacture of pharmaceutical products, finding that portions of the testimony lack a reliable methodology and cross into impermissible legal conclusions....