On January 20, 2015, the United States District Court for the Northern District of California (Hon. Maxine M. Chesney) granted summary judgment to Mentor Graphics Corporation, invalidating all asserted claims of three patents for claiming patent-ineligible subject matter under Section 101 of the Patent Act. The order issued on a motion briefed and argued by Klarquist in an action brought against Mentor Graphics by Synopsys, Inc.