MISSISSAUGA, ON, Feb. 10 /PRNewswire-FirstCall/ - YM BioSciences Inc. (NYSE YMI, TSX:YM), announced that it has been granted two additional patents in the US for AeroLEF(R), the Company's proprietary, inhaled-delivery composition of free and liposome-encapsulated fentanyl in development for the treatment of moderate to severe acute pain. US patent numbers 7,648,981 and 7,648,982 extend the life of YM's AeroLEF patent estate in the US to 2024. The Company also announced that AeroLEF's patent estate has expanded to include other territories with the issuance of European patent number 1,603,533 and several patent allowances in China, India, Mexico and other territories.
