H. Christopher Han

Specialty / focus. Based on the tracked matters and web-verified filings, Han's patent litigation work centers on high-tech electronics and software — specifically speech-recognition and voice-command technologies. In Parus Holdings v. Apple (W.D. Tex., No. 6:21-cv-00968, Judge Albright), Parus asserted voice-recognition patents against Apple; in Zentian Ltd v. Apple (W.D. Tex. and N.D. Cal., No. 3:23-cv-02921), Zentian asserted speech-processing patents (U.S. Patent Nos. 7,587,319; 7,979,277; 10,062,377; 10,839,789; 10,971,140). The authoritative profile does not state a technology focus, so this is inferred from the case record.

Side preference. Both tracked appearances (2) are defendant-side, with zero plaintiff-side work. His practice is defending operating companies — Apple in each tracked matter — against NPE/PAE infringement suits, consistent with Law360's additional listing of him on Apple matters (including the trade-secrets case Apple v. Rivos).

Firm context, notable cases, PTAB. Court filings and Law360 place Han at Morrison & Foerster in Palo Alto (2022–2023), where he signed the July 2023 stipulation staying Zentian v. Apple pending Apple's PTAB challenges; the tracked profile attributes his Parus appearance to O'Melveny & Myers, where he withdrew as Apple's counsel in November 2022 (unopposed, per the W.D. Tex. docket). His defense work is closely coordinated with IPRs: Apple's five petitions (IPR2023-00033 to -00037) on the Zentian patents were instituted June 12, 2023, and IPR2023-00036 produced a final written decision (June 11, 2024) finding the challenged claims unpatentable, which was appealed. I could not verify that Han personally argued before the PTAB.

Bar / education. California State Bar No. 295435 (admitted Jan. 6, 2014); J.D., New York University School of Law, per the California bar record. Note: Law360 lists "H. Christopher Han" and "Hyun Kyu Christopher Han" separately at MoFo/Palo Alto, but the matching bar number confirms they are the same attorney.