Particle.news
Download on the App Store

Zydus to Pay $120 Million to Settle Astellas Mirabegron Patent Case, Continue U.S. Generic Sales

The agreement sets a prepaid per‑unit licensing framework through September 2027, a structure analysts at Citi say could slow additional generic entries.

Overview

  • Zydus Lifesciences and its U.S. unit agreed to a $120 million payment to resolve a patent dispute over Astellas’ bladder disorder drug Mirabegron, sold as Myrbetriq.
  • Under the deal, Zydus will pay a prepaid per‑unit licensing fee on U.S. sales of its Mirabegron generic from the agreement date through September 2027.
  • The settlement permits Zydus to keep marketing its Mirabegron generic in the United States.
  • The companies said other terms are confidential, leaving key commercial details undisclosed.
  • The announcement follows Lupin’s recent $90 million settlement with Astellas over the same drug, which Citi has flagged as potentially limiting near‑term competition from additional generics.