Stac has right to sell Stacker 3.1 until Microsoft suit goes to trial. (Stac Electronics Inc.'s file management software; patent infringement suit) (Brief Article)

Microsoft Corp. said it will aggressively pursue all aspects of its patent infringement lawsuit against Stac Electronics Inc. after a U.S. District judge last week declined to issue a preliminary injunction to prevent Stac from selling its Stacker 3.1 utility.

At U.S. District Court in Los Angeles, Judge Edward J. Rafeedie turned down the preliminary injunction filed by Microsoft August 5 to keep Stacker 3.1 for Windows and DOS from being sold until a December trial date on the two companies' patent infringement claims and counterclaims.

"The ruling is not a determination of the merits of our case," said Microsoft senior corporate attorney John Mason. "We will …