Cipla Files Preemptive Lawsuit Over Boehringer’s Ofev Patents

Cipla Ltd. filed a lawsuit in Delaware federal court against Boehringer Ingelheim International GmbH seeking a declaration that its proposed generic version of Boehringer’s Ofev, used to treat progressive scarring of the lungs, doesn’t infringe two patents.

Cipla filed its complaint under seal late Friday in the U.S. District Court for the District of Delaware, according to court papers filed concurrently. It also filed four exhibits under seal because they contain confidential information related to Cipla’s application with the U.S. Food and Drug Administration to sell its Ofev copycat. Two of the exhibits “contain Cipla’s regulatory strategy” related to that …