Lilly Sues Dr. Reddy’s to Block Copies of Forteo Bone-Loss Drug

A generic version of Eli Lilly & Co.‘s Forteo proposed by Dr. Reddy’s Laboratories Ltd. infringes a patent for the injection device used to administer the osteoporosis drug, a federal lawsuit filed Friday in Delaware says.

The complaint, filed in the US District Court for the District of Delaware, launches Lilly’s first suit alleging infringement of the patent since August 2021, when it sued to block Sun Pharmaceutical Industries Ltd.’s proposed copy. That case was closed the next month.

The patent, which expires in March 2025, is the only one listed in the US Food and Drug ...