US drug maker Pfizer Inc has launched an appeal in a Beijing court against a ruling revoking the China patent of its male impotency drug Viagra, state media reported yesterday.
Pfizer wants the Beijing No. 1 Intermediate People's Court to order the State Intellectual Property Office (SIPO) to withdraw its decision to cancel the patent last year, the China Daily said.
Revoked
The company obtained a patent license for its erectile dysfunction treatment in 2001 only to see it revoked by SIPO last July after Chinese experts reviewed complaints by 12 Chinese pharmaceutical companies.
http://www.taipeitimes.com/News/worldbiz/archives/2005/04/01/2003248656