VANCOUVER, British Columbia, April 12, 2011 (GLOBE NEWSWIRE) -- Tekmira Pharmaceuticals Corporation (Nasdaq:TKMR) (TSX:TKM), a leading developer of RNA interference (RNAi) therapeutics, announced today that the United States Patent & Trademark Office (USPTO) has recently issued two key patents: one covering its lipid nanoparticle (LNP) manufacturing process and the other covering the chemical modification of siRNA to mitigate immune stimulation.
