Merck, Pfizer sue to block proposed version of AzaSite

| Tuesday, June 18, 2013, 12:01 a.m.

Merck & Co. and Pfizer Inc. sued generic drugmaker Mylan Pharmaceuticals Inc. to block it from selling a copy of AzaSite, an antibiotic eye solution for fighting bacterial conjunctivitis.

Mylan told Pfizer, Merck and InSite Vision Inc. on May 1 that it sought Food and Drug Administration approval to sell a generic version of AzaSite, according to a lawsuit filed on Friday in federal court in Trenton, N.J. The complaint asks a judge to prevent Mylan from entering the market before the patents expire. One ends in 2018, and the other three expire in 2019, according to the FDA website.

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