Technology Properties Ltd. v. Huawei Technologies Co., Ltd., No. 16-1306 (Fed. Cir. 2017)
Annotate this CaseThe 336 patent discloses a microprocessor with two independent clocks—a variable frequency system clock connected to the central processing unit (CPU) and a fixed-frequency clock connected to the input/output (I/O) interface. The patent teaches improving microprocessor performance by decoupling the CPU and I/O clocks, so that “optimum performance can be achieved by each.” In five separate litigations, the parties stipulated to non-infringement based on the district court’s construction of “an entire oscillator disposed upon said integrated circuit substrate.” The Federal Circuit consolidated the appeals and vacated, holding that the district court erred in a portion of its construction of “entire oscillator.” An ”entire oscillator disposed upon said integrated circuit substrate” is “an oscillator located entirely on the same semiconductor substrate as the central processing unit that does not require a command input to change the clock frequency and whose frequency is not fixed by any external crystal.”
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