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Home » Lipitor Challenge Marks First of Many for Crystalline Patents
Lipitor Challenge Marks First of Many for Crystalline Patents
December 13, 2005
In a reversal of an earlier decision, the U.S. Patent and Trademark Office (PTO) will confirm the validity of Pfizer's crystalline patent for the active ingredient in blockbuster cholesterol drug Lipitor after initially striking down all claims in the patent, Pfizer said.