Watson‘s lopatadine Hydrochloride Ophthalmic Solution USP, 0.2% is the generic version of Pataday (olopatadine hydrochloride ophthalmic solution) 0.2% of Alcon, which is used to treat ocular itching linked with allergic conjunctivitis.
Last week, Novartis‘ Alcon Research, Alcon Pharmaceuticals and Kyowa Hakko Kirin have sued Watson to preventthe company from commercializing its product before the expiration of US patent nos. 5,641,805, 6,995,186, and 7,402,609.