Canadian federal court upholds Viagra patent
Global pharmaceutical leader Pfizer says that the Canadian Federal Court in Toronto has ruled that the firm's second medical use patent covering Viagra (sildenafil) would be infringed by Apotex' proposed generic product.
The court granted the company's application for an order preventing Apotex from launching a generic version of Viagra until expiration of Canadian Patent No 2,163,446 in 2014.
The decision is subject to appeal, according to Pfizer.
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