Pfizer, Teva Settle Patent Litigation on Viagra

Pfizer has settled its litigation against Teva Pharmaceuticals USA Inc., relating to Pfizer’s patent covering the use of Pfizer's Viagra (sildenafil citrate) to treat erectile dysfunction in 25-, 50-, and 100-mg tablets. The patent expires in April 2020, including pediatric exclusivity.  As a result of the settlement, Teva will be allowed to launch a generic version of Viagra under a royalty-bearing license on Dec. 11, 2017, in the United States on December 11, 2017, or earlier under certain circumstances. Teva will pay Pfizer a royalty for a license to produce its generic version.  The terms of the settlement agreement are otherwise confidential.  Teva has received tentative approval from FDA for its generic version of Viagra.  

Sources: Pfizer and Teva Pharmaceuticals