This case is primarily about the Daubert standard as applied to expert testimony on damages. The Federal Circuit reversed the Northern District of California’s admission of expert testimony on damages, which relied on calculations that failed to differentiate between infringing products and non-infringing products. The Federal Circuit also reiterated the standards for a judgment as a matter of law (“JMOL”) of non-obviousness, and clarified that “by means of” claim language does not limit to but-for causation, i.e., it does not mean “by the exclusive means of.”Continue Reading Cyntec Company, Ltd. v. Chilisin Electronics Corp., Chilisin America Ltd. Nos. 2022-1873, (Fed. Cir. October 16, 2023)