QUEENSBURY, N.Y.--(BUSINESS WIRE)--AngioDynamics (NASDAQ:ANGO) announced today that the October 29 trial date in the patent litigation brought by VNUS Medical Technologies against AngioDynamics, Diomed and Vascular Solutions has been postponed due to scheduling conflicts in the court. No new trial date has been set. Judge Maxine Chesney of the U.S. District Court in the Northern District of California also denied the defendants’ motion that two of VNUS’s patents are invalid due to prior art, leaving these issues for trial.