Leuan Jolly

Ieuan Jolly

Partner and Chair of U.S. TMT & Data Solutions Practice, New York

“With experience spanning three continents, I synthesize global compliance and provide strategic commercial advice on a range of innovative data-driven and technology-enabled transactions.”


Professional experience

Education and qualifications


Ieuan is one of the data and tech industry’s foremost legal experts and has been globally recognized as a leader in his field. For example:

  • In the U.S., The National Law Journal recognized him as one of the nation's “Regulatory & Compliance Trailblazers”.
  • In Europe, he was inducted into The Legal 500’s Hall of Fame as a “Leading Technology & Data Protection Lawyer”.
  • He has been singled out in Chambers Global as a leading attorney in the area of privacy and data security law. 
  • His extensive data privacy experience was highlighted by Crain's New York Business, which described Ieuan as “part of a small cadre of people shaping global privacy law”.
  • He has been selected as a "New York Metro Super Lawyer" in Technology Transactions by Thomson Reuters. 

Ieuan works at the intersection of data and technology-enabled transactions for companies in high growth, innovation-driven markets. His data-focused practice has three key components: privacy compliance, data-driven transactions and cybersecurity. His combined experience mastering the intricacies of global privacy compliance, counseling on cybersecurity breaches and guiding the data and privacy aspects of corporate mergers, acquisitions and alliances, enables him to take a strategic commercial approach to providing a comprehensive set of data solutions. He is also regularly involved in corporate transactions assessing the valuation and vulnerabilities of data-rich companies in the context of capital market transactions, strategic investments and working with VCs, funds and private equity companies on growth and exit strategies.

Privacy compliance
Ieuan has extensive experience with global privacy and cybersecurity frameworks, including GDPR, CCPA, HIPAA and data governance across all sectors. He works with clients on the development and implementation of enterprise-wide compliance programs and risk mitigation strategies in relation to their collection and use of data or deployment of privacy impacting technology. He provides privacy regulatory counseling to clients deploying pioneering data uses, from using data in connected cars, engaging in social data targeting or addressable advertising, to cross-device tracking, and deploying geolocation capabilities, biometric and facial recognition technologies.

Data-driven transactions
Ieuan has engineered and negotiated some of the most pioneering data transactions globally, worth over a combined value of US$10bn, utilizing data in a range of innovative ways and injecting new revenue streams into companies looking to leverage their data assets.

“If there is a pioneering deal involving data assets, Jolly is usually involved, or has blazed a trail for it to happen.” — National Law Journal

Ieuan has advised on some of the most high-profile global security breaches including phishing, ransomware, spoofing, malware, spyware, DOS and negligence, involving collectively more than 100 million affected individuals across 45 countries. He collaborates with his clients to proactively plan for a crisis and develop strategies to improve resiliency, respond efficiently and effectively, and protect their business and brand.

Technology transactions
Ieuan combines international privacy expertise with extensive experience in the complementary areas of technology and communications law, outsourcing and interactive media. He counsels clients on a wide range of complex technology transactions and sourcing arrangements, systems integration, telecommunications procurement, and the global distribution, licensing and exploitation of content across interactive media platforms.


Professional experience

Ieuan has been writing about data and technology developments for 20 years. He is editor of "Data Protection in the United States" published by Practical Law and is on Law360's Cybersecurity & Privacy Editorial Advisory Board. He has been featured in numerous articles and is regularly quoted in the Wall Street Journal, Bloomberg and other international media.

Education and qualifications

Ieuan studied law at the University of Bristol, UK.