Pfizer Inc. Settles IMPAX Laboratories, Inc. Patent Suit Over Copy of Drug Detrol

Published: Aug 24, 2012

Pfizer Inc. (PFE), the world’s biggest drugmaker, settled a patent lawsuit over the application by Impax Laboratories Inc. (IPXL) to sell a copy of the bladder-control treatment Detrol LA. Terms of the accord weren’t fully disclosed in a filing yesterday in federal court in Newark, New Jersey, referring to a license agreement dated Aug. 16 between the two companies. Pfizer sued Impax in 2008, claiming it infringed three patents in applying for U.S. Food and Drug Administration approval to copy its extended-release capsules. The settlement bars Impax from selling any generic version of the drug during the life of two of the patents “except as permitted under the settlement and license agreement” between the companies.

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