Mark Webber

I am the US Managing Partner of Fieldfisher and an English solicitor based in Silicon Valley, where I have lived and worked for more than 16 years. For over 25 years, I have advised technology companies, investors and growth-stage businesses on the legal, regulatory and commercial challenges associated with technology, data and international growth.

Today, a significant part of my practice is focused on artificial intelligence. I am widely recognized for my work at the intersection of AI, data, digital regulation and technology transactions, advising clients on the development, deployment and commercialization of AI-enabled products and services. My work spans training and operational data, product design, platform integrations, governance frameworks, responsible AI practices and compliance with emerging digital and AI regulation.

Beyond regulatory compliance, I work closely with founders, boards, product leaders and executive teams on the strategic issues that shape technology businesses. I regularly advise on product strategy, international expansion, technology licensing, data-driven business models and complex commercial arrangements.

I am particularly known for helping US companies understand and operationalize UK and EU legal requirements. Drawing on more than 16 years of experience in Silicon Valley, I combine deep knowledge of European regulation with a practical understanding of how innovative technology companies build, launch and scale products.

In addition to my client work, I oversee Fieldfisher's operations in the United States and have played a key role in establishing and growing the firm's US presence.

I teach on the IAPP CIPP/E and AI Governance Professional certification programmes and am a Fellow of Information Privacy. I am registered with the State Bar of California as a Foreign Legal Consultant.