Kathryn Quisenberry

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Kathryn (Kate) Quisenberry — Patent Litigation Practice Summary

Focus areas. Quisenberry is a Houston-based patent litigator handling U.S. district court and Section 337/ITC matters. Her firm bios and PTAB filings describe casework spanning consumer electronics and telecommunications, software, non-volatile memory, semiconductor production, oil-and-gas technology, hardware, and medical devices — more electrical/software and electronics than pharma or life sciences. Her two tracked appearances fit that profile: the Apple/MyPort dispute in D. Del. and the LG Electronics v. Intellectual Ventures license dispute in Delaware Superior Court. Public dockets also show related work for Apple (SEVEN Networks, Neonode, Samsung/Netlist) and for Merrick & Company.

Side preference. The tracked counts are split evenly (1 plaintiff, 1 defendant), and the broader record supports a genuine both-sides practice: she has defended large operating companies (Apple, Samsung, Merrick) and also represented plaintiffs (LG, and a 2025 pro hac vice appearance for VTT Technical Research Centre of Finland in D. Del.). Her historical center of gravity has been defense-side representation of major electronics manufacturers, with plaintiff-side work concentrated in competitor-versus-competitor and licensor/licensee contract disputes rather than high-volume NPE campaigns.

Firm context. She spent roughly 2017–2025 as an associate at Fish & Richardson in Houston, where her LG Electronics work is identified as trial team counsel. She is now listed on the team page of Avantech Law LLP, the IP/technology boutique founded in 2021 and led by founder-partner William Woodford; that aligns with her entry as trial counsel for Apple in the MyPort matter. The D. Del. docket in MyPort Technologies, Inc. v. Apple, Inc. (1:24-cv-01337) reflects a motion to withdraw as Apple's counsel filed in September 2025, granted September 18, 2025, so her current status on that case should be confirmed with the client.

Notable matters, PTAB, bar. In the LG Electronics v. Intellectual Ventures entities litigation, she was on the Fish team that secured an October 2024 Delaware Superior Court jury verdict for LG on breach of a 2019 patent license agreement; the Delaware Supreme Court affirmed in April 2026 and revived $12.8 million in damages plus prejudgment interest and costs. Her Avantech bio credits her with a key role in The Chamberlain Group's $43.3 million E.D. Tex. jury verdict (plus roughly $1.1 million in fees) against Overhead Door and with a complete summary judgment of non-infringement for a Fortune 10 consumer electronics company in N.D. Cal. — those two results come from her firm bio and I did not independently verify her docket appearance in the Chamberlain litigation. On PTAB practice, the public record shows her admitted pro hac vice as petitioner's counsel in Apple Inc. v. SEVEN Networks LLC (IPR2020-00490 and IPR2020-00491), but it does not support describing her as a routine IPR/PGR lead. She is admitted in Texas (Bar No. 24105639, November 2017) and before the E.D., W.D., and S.D. of Texas, the Fifth and Federal Circuits, and the Court of International Trade; J.D. cum laude, Baylor Law School (2017); B.A., Trinity University (2012). She should not be confused with Kathryn A. Quesenberry, an employment attorney in Louisville, Kentucky.