lipitor patent

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Protecting the Public Domain » Pfizer Lipitor Patent

Pfizer Lipitor Patent

In September 2004, the Public Patent Foundation filed a formal request
with the United States Patent and Trademark Office to revoke Pfizer
Inc.'s patent on Lipitor, touted by the pharmaceutical giant as being
"the best-selling treatment for lowering cholesterol and the
best-selling pharmaceutical product of any kind in the world." In its
filing, PUBPAT submitted prior art showing the patent, which issued in
October 1999 and is not otherwise due to expire until 2016, was
anticipated by earlier work of other inventors and, as such, should
have never been granted. The PTO granted PUBPAT's request in December
2004 and rejected the patent in June 2005. In November 2005, Pfizer
conceded to give up its original broad claims.

Related Documents

PUBPAT's Request for Reexamination of Pfizer's Lipitor Patent
 (PDF; 326KB)

Patent Office Order Granting PUBPAT's Request for Reexamination of
 Pfizer's Lipitor Patent (PDF; 586KB)

Patent Office Action Rejecting Pfizer's Lipitor Patent (PDF; 170KB

Related News

November 29, 2005: PUBPAT RECEIVES SUBSTANTIAL VICTORY IN LIPITOR
 PATENT CHALLENGE: Pfizer Concedes to Give Up Original Broad Patent
 Claims

June 22, 2005: PATENT OFFICE REJECTS LIPITOR PATENT ON PUBPAT'S
 REQUEST: Public Interest Group's Review Results in All 44 Claims
 of Pfizer's Patent on Multi-Billion Dollar Drug Ruled Invalid

December 7, 2004: LIPITOR PATENT TO BE REEXAMINED AT PUBPAT'S
 REQUEST: Patent Office Agrees There is a "Substantial Question"
 Regarding Blockbuster Cholesterol-Lowering Drug Patent's Validity

September 14, 2004: PUBPAT CHALLENGES LIPITOR PATENT TO PROTECT
 PUBLIC HEALTH: Patent Office Shown Evidence Proving Blockbuster
 Cholesterol-Lowering Drug was Already Known

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