In Power Integrations, Inc. v. Fairchild Semiconductor Int’l, Inc., et al., C.A. No. 08-309-LPS (D. Del. Mar. 13, 2012), Judge Stark construed the following claim terms of the patents-in-suit:
“a feedback circuit coupled to receive a feedback signal”
“a control circuit coupled to generate a control signal in response to an output of the comparator and in response to an output of the feedback circuit”
“an oscillator for generating a signal having a switching frequency, the oscillator having a control input for varying the switching frequency”
“a controller to generate the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop in the primary-side of the transformer”
Judge Stark also denied plaintiff’s motion for summary judgment of infringement and defendants’ motions for summary judgment of non-infringement and invalidity because the Court concluded that there were genuine issues of material fact as to each motion.
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