FAIRFIELD, Conn., Aug. 3, 2009 (GLOBE NEWSWIRE) -- Competitive Technologies, Inc. (NYSE Amex:CTT) announced today that its homocysteine patent re-examination has been upheld by the U.S. Patent and Trademark Office's Board of Patent Appeals and Interferences (BPAI). CTT's patent rights were previously upheld by the U.S. Supreme Court and U.S. District Courts.