SAN FRANCISCO, March 9, 2026 — Arnold & Porter announced today that Natalie Sinzig has joined the firm’s Intellectual Property & Technology practice as counsel in San Francisco.

Natalie is an accomplished IP litigator with significant experience leading high-stakes patent, trade secret, and copyright disputes across a broad range of technologies. Her practice spans complex matters involving AI and machine learning, medical devices, solar panels, wireless networks, radio frequency identification systems, semiconductors, batteries, and digital mobile radios.

With over a decade of experience, Natalie has handled matters in both state and federal courts as well as before the Patent Trial and Appeal Board. She has successfully guided clients through all phases of litigation — from pre-suit investigations and discovery through trial strategy and post-trial proceedings — delivering favorable outcomes in high-value matters. She also publishes thought leadership on IP and cybersecurity matters impacting technology companies.

Prior to joining Arnold & Porter, Natalie was a partner in the IP Litigation group at a top-ranked Am Law 100 firm, where she managed critical aspects of motion practice, witness preparation, expert strategy, and trial execution in complex technology disputes by translating highly technical subject matter into compelling courtroom narratives.

Natalie earned her J.D. from the University of California, Berkeley, School of Law, where she received a Law & Technology Certificate. She also holds a B.A., magna cum laude, from the University of California, Berkeley.

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