Tuesday, April 26, 2016

Chance to reconsider use of COX-2 inhibitor rofecoxib?

US Patent 6,063,811, assigned to Merck, has claims covering methods for the use of VIOXX:


1. A method of treating a disease susceptible to treatment with an non-steroidal anti-inflammatory agent comprising:

administration orally once a day to a human patient in need of such treatment 12.5 or 25 or 50 mg of 3-phenyl-4-(4-methylsulfonyl)phenyl)-2-(5H)-furanone.

2. A method according to claim 1 for the treatment of non-chronic headache, pain or swelling.

3. A method according to claim 1 for the treatment of osteoarthritis.

4. A method according to claim 1 for the treatment of rheumatoid arthritis.

5. A method according to claim 1 for the treatment of pain.

6. A method according to claim 1 for the treatment of fever.

7. A method according to claim 1 for the treatment of dysmenorrhea.

8. A method according to claim 1 for the treatment of Alzheimer's disease.



The priority cases are almost 20 years old


This is a National phase U.S. application of PCT/US97/08041, filed May 13, 1997, which claims priority from U.S. Provisional Application 60/017,878, filed May 17, 1996 and British application GB 9612063.9, filed Jun. 10, 1996.

This application is also a continuation of U.S. Ser. No. 08/851,756, filed May 6, 1997 now abandoned, which claims priority from U.S. Provisional application 60/017,878, filed May 17, 1996.



Merck removed VIOXX from the market. As noted in IPBiz at the time [ http://ipbiz.blogspot.com/2004/10/merck-recalls-vioxx-on-sept-30-2004.html ], this was a voluntary recall by Merck.

For details of the history see

https://en.m.wikipedia.org/wiki/Rofecoxib

http://www.npr.org/templates/story/story.php?storyId=5470430

http://www.nejm.org/doi/full/10.1056/NEJMp048286

**Separately, from L.B. Ebert, Increasingly Aggressive Efforts at Patent Enforcement, Intellectual Property Today (June 2000) page 22 (available LEXIS) -->

endnote 9:


n9 Curiously, shortly AFTER approval [of Celebrex], a scientific paper was published which raised issues with Celebrex. According to a report from the group of Dr. Ganet A. FitzGerald in the Proceedings of the National Academy of Science, 1999, 96:272-277, the drug may increase the risk of heart attack, stroke and blood clotting disorders. Many older people who may want to take COX-2 inhibitors for conditions like arthritis could be at risk for developing heart and blood vessel problems from the drug. Dr. Saul Bloomfield said that taking COX-2 inhibitors might be a matter of exchanging a gastrointestinal risk from one painkiller to a cardiovascular risk for another. See also Wall St. Jour., April 20, 1999. On April 27, 2000, there was a Reuters release "Merck's Vioxx seen facing FDA scrutiny on heart attacks." [Vioxx (rofecoxib) is a different COX-2 inhibitor.] On April 28, 2000, PR Newswire reported results of a study in which Pharmacia found even at very high doses, Celebrex showed no increases in stroke or heart attack with or without aspirin. [See Hoover's Online]

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