(September 13, 2017, 11:54 AM EDT) -- ALEXANDRIA, Va. — In a Sept. 11 petition for inter partes review by the Patent Trial and Appeal Board, Mentor Graphics Corp. takes aim at a patent directed to a method and apparatus for semiconductor testing, asserting that generating test data and identifying an outlier in the test data “was well known” in the art (Mentor Graphics Corporation v. Eric Paul Tabor, No. IPR2017-02094, PTAB)....