Pacira Patent on Surgery Pain Drug Voided in Win for Jiangsu

Pacira BioSciences Inc. lost a ruling to Jiangsu Hengrui Pharmaceuticals Co. and its eVenus unit as a federal judge canceled a patent for Exparel, a long-acting injectable painkiller for managing postsurgical pain.

Judge Madeline Cox Arleo issued the order Friday in the US District Court for the District of New Jersey. She gave the parties seven days to file a joint proposed redacted version of her opinion, issued concurrently under seal. The invalidation of US Patent No. 11,033,495, which would’ve expired in January 2041, mooted Pacira’s infringement claim, according to the order.

Arleo also said that “no finding of ...