prostavive review

    Viagra: A Complicated Case Study of Generic Drug ... - DrugPatentWatch

    Protecting Viagra with Multiple Patents and Patent Extensions Viagra patent 6,469,012. Viagra was approved in 1998, and the original patent covering Viagra was 5,250,534, which received a 283-day patent term extension giving it an expiration date of March 29th, 2012.This 14-year patent life is longer than many other drugs, but Pfizer was able extend the patent-protected life even further.

    Teva Announces Launch of Generic Viagra - Pharmacy Times

    Teva Pharmaceutical Industries has announced the US launch of their generic sildenafil citrate (Viagra) tablets, according to a company press release. Sildenafil tablets are a phosphodiesterase-5 (PDE5) inhibitor indicated for the treatment of erectile dysfunction (ED). Additionally, officials with Teva are offering a sildenafil tablets savings ...