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Fed. Circ. Revives Tamiflu Case, Expands Double-Patenting

By Ryan Davis (April 22, 2014, 6:17 PM EDT) -- The Federal Circuit ruled Tuesday that a patent can be rendered invalid for double-patenting based on a patent that expires before it, expanding the double-patenting doctrine and giving Natco Pharma Ltd. another shot at invalidating Gilead Sciences Inc.'s patent on the flu drug Tamiflu....

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