Lexecon Inc. v. Milberg Weiss Bershad Hynes & Lerach, 523 U.S. 26 (1998), was a United States Supreme Court case in which the Court unanimously held that a district court conducting coordinated pretrial proceedings in multiple cases by designation of the Judicial Panel on Multidistrict Litigation under 28 U.S.C. § 1407(a) has no authority to reassign a transferred case to itself for the actual trial of the case. The Court's decision overturned numerous lower-court decisions upholding what had become a common practice in multi-district cases.