AUSTIN, Texas, May 3, 2012 (GLOBE NEWSWIRE) -- Pain Therapeutics Inc. (Nasdaq:PTIE) a biopharmaceutical company, today announced the issuance of four patents by the U.S. Patent and Trademark Office covering REMOXY® (oxycodone) Extended-Release Capsules CII. These patents are the result of joint inventive work by scientists from both Pain Therapeutics and Durect Corporation (Nasdaq:DRRX). The four issued patents are licensed exclusively to Pain Therapeutics in the United States and international markets with regards to four opioid drugs.
