Dr Reddy'sfiles patent infringement case againstPerrigo UK &

Dr Reddy's Laboratories Limited today said subsidiary Promius Pharma LLC, has filed a patent infringement lawsuit in a US court against Perrigo UK Finco Limited Partnership, Perrigo Israel Pharmaceuticals Ltd. and Taro Pharmaceuticals, Inc over its topical spray Sernivo.

In a filing with the bourses,it said the case was filed in the United States District Court for Eastern District of Texas against the three companies "in response to two paragraph-IV notice letters received for its twice daily topical spray Sernivo (betamethasone dipropionate, 0.05%) product."