Mealey's (March 2, 2020, 11:22 AM EST) -- LOS ANGELES — In a Feb. 28 order, a federal judge in California barred a patent infringement plaintiff from presenting at an upcoming trial evidence relating to findings by the Patent Trial and Appeal Board that four patents in suit are nonobvious (Vaporstream Inc. v. Snap Inc., No. 17-220, C.D. Calif., 2020 U.S. Dist. LEXIS 34772)....