20 May 2013
Keywords: pfizer, loses, pde, inhibitor, patent, opposition, division
Article | 26 July 2001
The Opposition Division of the European Patent Office has declaredPfizer's method-of-use patent EP702555 for phosphodiesterase inhibitors, including Viagra (sildenafil), invalid. ...
Enjoying this article? To continue reading you need to login or subscribe.
Subscriptions are £60 per month, pay as you go.
Find out more details.