OncoZenge AB (publ) announced that the European Patent Office (EPO) has granted patent 3 284 459 which protects BupiZenge®, currently in development for treatment of pain due to oral mucositis. The patent is expected to be in effect until 2032. The new patent protects sustained-release lozenge containing bupivacaine, for treatment or alleviation of pain in the oral cavity. It is a divisional of the previously granted European patent 2 701 681, that specifically protects the use of lozenges for treatment of pain due to oral mucositis for cancer patients. BupiZenge® has previously been granted patents with a similar scope in the United States and Canada.