Cosmo, Sun Sue Aurobindo to Block Copies of Winlevi Acne Cream

Aurobindo Pharma Ltd.’s proposed generic version of Winlevi infringes six patents for the anti-acne cream that Cosmo Pharmaceuticals NV licenses to Sun Pharmaceutical Industries Ltd., a federal lawsuit says.

Cosmo’s Cassiopea SPA unit and Sun allege Aurobindo’s copy infringes patents covering Winlevi’s active ingredient, clascoterone; methods for making it; certain crystalline forms of it; and Winlevi’s use for treating acne vulgaris, according to a complaint filed Monday in the US District Court for the District of New Jersey.

Aurobindo didn’t immediately respond to a request for comment.

• The patents expire between July 2028 and July 2030, the latest of ...