On May 11, 2016, Unified Patents Inc. filed a petition for inter partes review, IPR2016-01026, against claims 1, 4, 7, 10, 11, 14, 15, 17, 20, 23, 26, 27, 30,and 31 of U.S. Patent 6,546,439, directed to a method for optimizing memory requests. The patent is owned by an NPE called Advanced Silicon Technologies (http://adsiltech.com/)
A copy of the petition can be found on our PTAB portal.