FOSTER CITY, Calif.--(BUSINESS WIRE)--Gilead Sciences, Inc. (Nasdaq:GILD) today announced that it has filed a lawsuit in U.S. District Court in New York against Teva Pharmaceuticals USA, Inc. and Teva Pharmaceutical Industries, Ltd. for infringement of U.S. Patent Numbers 6,642,245 and 6,703,396. Both patents are associated with emtricitabine, a component of Truvada® (emtricitabine and tenofovir disoproxil fumarate), and are licensed exclusively to Gilead Sciences by Emory University. Truvada is indicated in combination with other antiretroviral agents for the treatment of HIV-1 infection in adults.