(BUSINESS WIRE)--Pfizer Inc announced today that the U.S. Patent & Trademark Office has issued a communication notifying the company that it will confirm the patentability of the claims of Pfizer's ‘893 basic patent for Lipitor. The Patent Office had conducted a re-examination of the ‘893 patent in response to a request by a law firm that represented the generic company Ranbaxy Laboratories Limited. The patent, which expires
