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Aventis Files Additional Suits Over Allegra Patents

Law360 (March 10, 2004, 12:00 AM EST) -- French drug maker Aventis and licensing partner AMR Technology Inc. have filed additional patent infringement lawsuits against five companies seeking to make generic versions of the allergy drug Allegra.

The lawsuits were filed in the U.S. District Court of New Jersey and are based on United States Patent Nos. 5,581,011 and 5,750,703, which are owned by AMR Technology, Inc. and exclusively licensed to Aventis.

These patents, which expire in the late 2013-2015 timeframe, claim fexofenadine intermediates and processes for making fexofenadine.

The French company said it...
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