Pfizer Inc. (PFE) Rigged Canadian Viagra Patent Filing: Lawsuit
 12/12/2012 7:57:50 AM  Pfizer illegally gamed the Canadian
patent system to monopolize the market for Viagra and overcharge
customers, a class action claims in British Columbia Supreme
Court. Lead plaintiff Britton Low claims that the Supreme Court
of Canada invalidated Pfizer's patent on Viagra in November,
citing shoddy Patent Act disclosures, after a legal dispute with
generic drug maker Teva Pharmaceuticals. Teva wanted to bring a
generic version of Viagra (sildenafil) to the Canadian market,
but could not while the case wound its way through Federal Court
and eventually up to the Canadian Supreme Court. Days after that
ruling, Pfizer reduced the price of Viagra to the price for the
generic version, Low claims. He claims that Pfizer tailored its
original patent application to be ambiguous, though it knew that
sildenafil was the effective ingredient. The application "failed
to clearly set out what the invention was," according to the
complai