UPPSALA, Sweden, Dec. 30, 2020 /PRNewswire/ -- Orexo AB (publ.), (STO:ORX) (OTCQX:ORXOY) today announces that the US Patent and Trademark Office has issued an additional patent for ZUBSOLV®, Orexo's sublingual buprenorphine and naloxone tablet (CII) for the treatment of opioid use...