(November 7, 2019, 3:31 PM EST) -- WILMINGTON, Del. — In a Nov. 6 complaint filed in the U.S. District Court for the District of Delaware, the U.S. Department of Health and Human Services (HHS) accuses a drug maker of infringing four patents relating to the treatment of human immunodeficiency virus (HIV) (The United States v. Gilead Sciences Inc., et al., No. 19-2103, D. Del.)....