Canada top court rules against Pfizer in Viagra patent case

OTTAWA (Reuters) – Canada’s Supreme Court on Thursday ruled against global drug giant Pfizer Inc, ruling that a patent on its Viagra erectile dysfunction drug was no longer valid. The court backed an appeal by Israeli-based Teva Pharmaceutical Industries Ltd – the world’s largest generic drug maker – which argued Pfizer had not provided enough details when filing its patent, which runs out in 2014 in Canada. (Reporting by David Ljunggren; Editing by Jeffrey Hodgson)
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