VANCOUVER, British Columbia, June 3, 2011 (GLOBE NEWSWIRE) -- Tekmira Pharmaceuticals Corporation (Nasdaq:TKMR) (TSX:TKM), a leading developer of RNA interference (RNAi) therapeutics, disclosed today that it has filed an amended complaint against Alnylam Pharmaceuticals, Inc. (“Alnylam”) with the Business Litigation Session of the Massachusetts Superior Court.