GAITHERSBURG, Md., April 1, 2009 (GLOBE NEWSWIRE) -- QIAGEN Gaithersburg Inc. (formerly Digene Corporation), a wholly-owned subsidiary of QIAGEN N.V. (Nasdaq:QGEN) (Frankfurt:QIA) today announced the U.S. Court of Appeals for the Federal Circuit (CAFC) denied an appeal by ThirdWave Technologies Inc. (“ThirdWave”), a wholly-owned subsidiary of Hologic, Inc. (Nasdaq:HOLX) and affirmed a lower court decision which was favorable for QIAGEN.