Impax Sued Again Over Ultram ANDA

Law360, New York (November 6, 2008, 12:00 AM EST) -- While Impax Laboratories Inc. continues to try to bring a generic version of the painkiller Ultram to market, the drug’s marketer, Ortho-McNeil-Janssen Pharmaceuticals Inc., has filed another infringement suit against the company.

The complaint, lodged Tuesday in the U.S. District Court for the District of Delaware, claims a second abbreviated new drug application filed by Impax infringes the patent for Ultram.

Purdue Pharma Products LP and Napp Pharmaceutical Group Ltd. own U.S. Patent Number 6,254,887, titled “Controlled release Tramadol” and license the patent to OMJP for...
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