The Washington Research Foundation has sued mobile phone makers Nokia, Samsung Electronics and Matsushita-owned Panasonic for <A HREF="http://www.eweek.com/article2/0,1895,2078593,00.asp?kc=EWEWEMNL010107EP26D">infringing on a patent for wireless Bluetooth technology.</A> "Defendants have manufactured, used, imported into the United States, sold and offered for sale devices which, or the use of which, infringes at least the '963' patent," Washington Research Foundation said in a complaint filed at the United States Western District Court of Washington State at Seattle.