Pfizer considers appeal over Viagra rulingBMJ 2000; 321 doi: https://doi.org/10.1136/bmj.321.7271.1244/a (Published 18 November 2000) Cite this as: BMJ 2000;321:1244
- Roger Dobson
Pfizer is considering launching an appeal against a court ruling in London that removed patent protection from a key ingredient in Viagra. The patent on Viagra as a compound remains in place, but the patent covering the use of the phosphodiesterase 5 (PDE 5) inhibitor in the treatment of male erectile dysfunction has been overturned.
The court ruling that Viagra had no general patent protection on the PDE 5 inhibitor is seen …