Headwater Research LLC v. Verizon Communications Inc. et al, No. 2:23-cv-00352 (E.D. Tex. June 15, 2025)

From the Opinion

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Before the Court is the Motion to Strike Certain Opinions and Testimony of Defendants’ Expert Kevin Jeffay, filed by Plaintiff Headwater Research LLC . Dkt. No. 178. For the reasons discussed below, the Motion is GRANTED as to Dr. Jeffay’s opinions on (1) the OS-Switching NIA and (2) the iOS 7 through 10 NIA i n his Invalidity and Rebuttal Reports, and otherwise DENIED. I. BACKGROUND On July 28, 2023 Plaintiff Headwater Research LLC filed suit against Defendants, asserting that they infringe four of its patents: U.S. Patent Nos.