U.S. court finds Bayer contraceptive patent claim invalid

WASHINGTON (Reuters) – A U.S. appeals court has ruled against Bayer AG, a world leader in oral contraceptives, reversing a ruling by a lower court and finding that parts of a patent for the German drugmaker’s Yaz birth control pill were invalid. The U.S. Court of Appeals for the Federal Circuit ruled on Tuesday that a district court in Nevada had erred last March in finding two claims of a patent for the contraceptive to be valid. It reversed the ruling on Tuesday. …
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