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Pfizer Inc. (PFE) Sues Apotex Inc., Mylan Inc. (MYL) to Block Generic Viagra  
11/1/2010 7:49:34 AM

Bloomberg -- Pfizer Inc., the world’s biggest drugmaker, filed a patent-infringement lawsuit against four companies including Apotex Inc. and Mylan Inc. to block sales of generic versions of the erectile-dysfunction drug Viagra.
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