Appeals Court Affirms Invalidity of Yasmin Patent

A Bayer HealthCare patent covering its Yasmin contraceptive has been found invalid by a three-judge panel that affirmed a lower court ruling in a case Bayer brought against Barr Laboratories. The U.S. Court of Appeals for the Federal Circuit upheld in a 2–1 vote a 2008 district court ruling in favor of Barr, which wanted to introduce a generic Yasmin (drospirenone/ethinyl estradiol). The decision held that the ’531 patent covering Yasmin (drospirenone/ethinyl estradiol) is invalid due to obviousness, according to court documents.
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