Sanofi loses appeal over Lovenox patent
French drug major Sanofi-Aventis has lost its appeal in the US Supreme Court to overturn a lower court verdict that the firm's patent for its top-selling product Lovenox (enoxaparin) was unenforceable. Israel's Teva and Amphastar Pharmaceutical claimed that Sanofi had misled the Patent and Trademark Office when the product was filed. Lovenox' patent was not set to expire until 2012, but the two generic firms, along with Momenta Pharmaceuticals, may soon be free to launch a copy version of the drug.
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