NEW YORK--(BUSINESS WIRE)--Pfizer Inc announced today that the U.S. Patent & Trademark Office has issued its first communication in the reexamination of the ‘893 basic patent for Lipitor, initially rejecting the patent’s claims. This initial action, which is how the Office raises its issues with the patentee, will now be followed by the company’s response, in which Pfizer will address those issues raised by the examiner. As the company previously indicated, an initial rejection is not unusual in reexamination proceedings.
