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Bayer Appeals Invalidity Ruling on Its Yasmin Patent Appeal Will Be Heard by the Federal Circuit

LEVERKUSEN, Germany, March 31, 2008 - Today, Bayer filed a Notice of Appeal in the United States District Court for the District of New Jersey.

Bayer is appealing from a March 3, 2008 opinion and order in which District Judge Peter G. Sheridan held that certain patent claims of Bayer Schering's U.S. Patent No. 6,787,531 for the company’s oral contraceptive Yasmin (drospirenone 3 mg and ethinyl estradiol 0.03mg) were invalid because they would have been obvious to the person of ordinary skill in the art.

Bayer had sued generic manufacturer Barr Laboratories for patent infringement in connection with Barr's application to the FDA for approval to market a generic version of Bayer's oral contraceptive Yasmin.

Bayer's appeal will be heard by the Federal Circuit, which is the federal court of appeals for patent cases.

About Bayer HealthCare The Bayer Group is a global enterprise with core competencies in the fields of health care, nutrition and high-tech materials. Bayer HealthCare, a subsidiary of Bayer AG, is one of the world’s leading, innovative companies in the healthcare and medical products industry and is based in Leverkusen, Germany. The company combines the global activities of the Animal Health, Consumer Care, Diabetes Care and Pharmaceuticals divisions. The pharmaceuticals business operates under the name Bayer Schering Pharma AG. Bayer HealthCare’s aim is to discover and manufacture products that will improve human and animal health worldwide. Find more information at

About Bayer Schering Pharma Bayer Schering Pharma is a worldwide leading specialty pharmaceutical company. Its research and business activities are focused on the following areas: Diagnostic Imaging, Hematology/Cardiology, Oncology, Primary Care, Specialized Therapeutics and Women's Healthcare. With innovative products, Bayer Schering Pharma aims for leading positions in specialized markets worldwide. Using new ideas, Bayer Schering Pharma aims to make a contribution to medical progress and strives to improve the quality of life. Find more information at

Forward-looking statements This release may contain forward-looking statements based on current assumptions and forecasts made by Bayer Group or subgroup management. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Bayer’s public reports which are available on the Bayer website at The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.


Günter Forneck 
Phone: +49 214 30-50446 
Fax: +40 214 30-55156

Posted: April 2008