Sepracor Claims Patent Priority Over Wyeth's Pristiq

Law360, New York (April 17, 2009, 12:00 AM EDT) -- Pharmaceutical rivals Sepracor Inc. and Wyeth Inc. are battling in the U.S. Patent and Trademark Office for inventorship rights to Pristiq, a Wyeth drug used to treat depression in adults.

Sepracor said Friday it first filed patent documents for the drug on April 6, 1999, about 22 months before the initial filing date asserted by Wyeth.

If it prevails in proceedings before the Board of Appeals and Patent Interferences, the company said, it could gain patent rights to the drug that would be infringed by Wyeth's...
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