Nov 3, 2009 - Salix Pharmaceuticals, Ltd. today announced that the U.S. Patent and Trademark Office has issued U.S. Patent No. 7,612,199 (the ˜199 patent) entitled “Polymorphic Forms Alpha, Beta, and Gamma of Rifaximin”. The patent issued November 3, 2009 and provides protection until June 2024.
The details can be read here.
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