Foundation says Intel Core 2 Duo chips use a University of Wisconsin, Madison-patented invention without permission Intel was hit with a lawsuit by the Wisconsin Alumni Research Foundation on Wednesday, alleging that the chipmaker used a WARF invention in its processor architectures, including the popular Core 2 Duo.The patent infringement lawsuit, filed in U.S. District Court for the Western District of Wisconsin, alleges that many of Intel’s chips implement a University of Wisconsin, Madison, invention of a circuit that executes instructions to speed up processor performance.The patent, titled “Table based data speculation circuit for parallel processing computer,” was awarded to four university researchers in 1998. WARF is looking for an undisclosed amount of compensation from Intel and an order for the company to stop selling certain processors, including the Core 2 Duo chip. A court date for legal proceedings has not been set yet, said Janet Kelly, communications director for WARF.WARF is not a part of the University of Wisconsin, Madison, but a private organization that patents and licenses inventions of the university, Kelly said.Intel has refused to enter into a license agreement with WARF related to the patent, a court document said. WARF has made repeated attempts to offer Intel legal licensing opportunities for the technology, WARF said in a statement. The suit came as a surprise to Intel.“We were in discussions with WARF for more than a year on this issue. However [we] did not expect this suit,” Intel spokesman Chuck Mulloy said.Intel is evaluating the complaint and will file a response, he said. Technology Industry