 While the patent was filed in 1991, the first litigation was initiated in 2005.On May 21, 2007, U.S. District Court of Eastern Texas ruled in favor of EchoStar Communications Corporation, on grounds that the patent is invalid.After Forgent Networks acquired iEmployee and subsequently changed its name to Asure Software, the website of the combined company no longer listed information related to the two patents - '672 and '746, compared to the old Forgent Networks website.