STEVENSON, MD–(Marketwire - June 1, 2010) - Brower Piven, A Professional Corporation announces that a class action lawsuit has been commenced in the United States District Court for the Southern District of New York on behalf of purchasers of the publicly traded securities of Pfizer, Inc. (”Pfizer” or the “Company”) ( NYSE : PFE ) during the period between January 19, 2006 and January 23, 2009 …