Cozen O'Connor successfully represented Apotex in a patent dispute with Vanda Pharmaceuticals over the sleep disorder drug Hetlioz. The Federal Circuit upheld a district judge's decision to invalidate four patents owned by Vanda Pharmaceuticals. In January 2023, Cozen O'Connor successfully represented Apotex at the U.S. Court of Appeals for the Federal Circuit in securing a denial of Vanda Pharmaceuticals' bid to seek an injunction pending an appeal of Apotex's and Teva's victory in the District of Delaware. Cozen O'Connor's appellate team included Blake Coblentz, Aaron Lukas, and Keri Schaubert.

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