SOUTH SAN FRANCISCO, Calif., March 10, 2011 (GLOBE NEWSWIRE) -- Sunesis Pharmaceuticals, Inc. (Nasdaq:SNSSD) today announced that the European Patent Office (EPO) has granted European Patent No. 1725233, claiming the Company’s pharmaceutical compositions of lead drug candidate vosaroxin. Sunesis is proceeding to validate this patent in multiple EPO member states. The resulting national patents would expire on March 14, 2025, but could be eligible for patent term extension beyond this date. A related United States patent was granted in 2010, and related patent applications are pending in other major markets throughout the world including Japan, Australia and Canada.