About Antonia L.
Antonia L. Sequeira combined an early interest in the life sciences with legal training to build a career in intellectual property. She earned a Bachelor of Science in Biological Sciences, concentrating in Anatomy and Physiology, from California Polytechnic State University in 1999. Three years later she received her J.D. from the University of California, Berkeley School of Law in 2002.
Her scientific undergraduate background set a foundation for work that crosses technical and legal lines. After law school she moved into patent law and over time established herself at Fenwick & West LLP, where she is a partner. At the firm she has handled matters that require both legal analysis and technical understanding. Colleagues say she is comfortable talking to inventors, reading complex scientific disclosures and translating those details into patent claims and litigation positions.
Sequeira is admitted before multiple forums. Her registrations include the United States Patent and Trademark Office and appearances in the Federal Circuit, the U.S. Supreme Court, the Ninth Circuit and the U.S. District Court for the Northern District of California. She also maintains membership in the State Bar of California. Those admissions allow her to prosecute patent applications, advise on appellate strategy and represent clients in both trial and appellate courts.
Her practice draws on the intersection of biology and technology. She has worked on patent prosecution for biotechnology inventions and has been involved in patent litigation that touches on medical and life-science technologies. In those matters she combines claim drafting, prior art analysis and deposition work. She also counsels clients on licensing and portfolio management, helping to align patent filings with broader business objectives.
At Fenwick & West Sequeira works with startups and established technology firms. She regularly collaborates with in-house teams and outside experts to prepare technical declarations, respond to office actions and argue positions in post-grant proceedings. The work often requires quick assimilation of new scientific material and clear, concise legal writing.
Outside of casework, she remains connected to developments in patent law through bar activities and continuing legal education. Her dual background in biological sciences and law informs how she approaches invention protection and disputes. She is currently practicing as a partner at Fenwick & West LLP, where she concentrates on patent prosecution, counseling and litigation involving life-science and related technologies.
