Hannah Y. Lee

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Hannah Y. Lee — Patent Litigation Practice Summary

Focus areas. Lee's litigation practice centers on high-stakes patent disputes in cybersecurity and network technology and in the life sciences. Her tracked matters all arise from Centripetal Networks' cybersecurity patent portfolio (network threat detection, encrypted-communications filtering, and next-generation firewall technology). Her firm bios describe a broader practice spanning pharmaceuticals, biotech, medical devices, semiconductors, and computer security software, consistent with her B.S. in chemical engineering.

Side preference. On her tracked record she sits entirely on the patent-owner/asserting side: all five appearances list her as plaintiff-side counsel for Centripetal Networks, adverse to Cisco, Palo Alto Networks, and Keysight. Several of those entries (the Palo Alto Networks v. Centripetal matters) are PTAB proceedings in which Centripetal was the responding patent owner. So her dossier reads as patent-owner advocacy rather than defense of operating companies, and the plaintiff/defendant split of 5–0 understates that nuance — she has defended patent owners in IPRs and represented life sciences clients, but has not appeared in the tracked set as a defendant's counsel.

Firm context. Lee spent 2011–2024 at Kramer Levin Naftalis & Frankel, based in the firm's Menlo Park/Redwood Shores office, as part of the Silicon Valley IP group led by Paul J. Andre and Lisa Kobialka; she made partner there. She previously practiced at Perkins Coie and King & Spalding, moving with the same team. All tracked appearances carry the Kramer Levin name, matching matters litigated roughly 2018–2024. In 2024 she moved in-house to Genentech, where she handles patent litigation and related risk and policy work as Senior Patent Litigation Counsel/Assistant General Counsel. (Note: Kramer Levin is now part of Herbert Smith Freehills Kramer; her former colleagues subsequently moved to Brown Rudnick.) She should not be confused with other attorneys named Hannah Lee or Hannah Brennan, who appear in unrelated matters.

Notable matters and outcomes. In Centripetal Networks v. Cisco Systems (E.D. Va.), she was a key trial-team member in the six-to-eight-week bench trial — the first fully virtual federal trial — that produced a $755.8M actual-damages finding, enhanced 2.5x to roughly $1.9B, with running royalties bringing the total award into the $2.65–3.25B range; Managing IP named it Impact Case of the Year in 2021. The Federal Circuit vacated that judgment in June 2022 on judicial-recusal grounds and remanded for proceedings before a new judge. In Centripetal Networks, LLC v. Palo Alto Networks, Inc. (E.D. Va.), she was among trial counsel for the February 2024 jury verdict of $151.5M, recognized as Litigation Daily "Litigator of the Week" runners-up; the tracked Federal Circuit Appeal No. 2024-2373 is a further chapter in that litigation, and she withdrew from the district court case in May 2024 upon leaving the firm. Her firm bio also credits her with a $62M settlement for a specialty pharmaceutical patent owner against Purdue Pharma.

PTAB / IPR. Lee appears regularly in PTAB proceedings. She filed declarations and papers in the Palo Alto Networks IPR against Centripetal's '856 patent (IPR2022-00182) and in the related Cisco and Keysight joinder proceedings, and her firm bio states she served as lead counsel in three IPRs defending the validity of all 25 challenged claims of two patents. She has also published on IPR strategy for life sciences patent owners.

Bar and education. B.S. in chemical engineering, Stanford University (2003); J.D., Northwestern University School of Law; admitted in California. Named a Law360 Rising Star in IP in 2021. Her USPTO registration status was not verified in the sources reviewed.