Mr David Cullen > William Fry > Dublin, Ireland > Lawyer Profile

William Fry
David Cullen photo

Work Department

IT, Telecoms & E-commerce; Intellectual Property; Life Sciences & Healthcare; Commercial.


David Cullen is a Partner and Head of William Fry’s Technology Group, specialising in complex technology matters and the strategic protection and development of intellectual property. His extensive experience covers outsourcing, cloud computing, personality rights, data protection, biotechnology, and electronic commerce.


David is a member of the Licensing Executives Society, the Irish Software Association, the Irish Medical Device Association and former Chairman of the Copyright Association of Ireland. He has served as a judge at the Irish Software Awards and is a regular speaker at events. He is also a Registered Trade Mark Agent.

Lawyer Rankings

Ireland > Data privacy and data protection

(Leading individuals)

David CullenWilliam Fry

William Fry advises clients on the launch of new products, data processing agreements, GDPR compliance, and international transfers of data. The practice is also involved in litigation related to data protection regulation. Clients includes technology companies, manufacturers, and retailers. David Cullen leads the practice, as well as heading up the overall technology team; he is experienced in advising on the contractual arrangements of large-scale IT projects, as well as handling data protection disputes. Leo Moore‘s practice includes advisory GDPR work and matters related to outsourcing. John O’Connor is another name to note.

Ireland > Intellectual property

William Fry handles intellectual property registration, commercialisation, and protection across sectors including technology, food and beverages, life sciences, and fashion. Practice co-head Laura Scott is known for representing clients before the Commercial Court, particularly in patent disputes, while fellow co-head David Cullen handles both commercial agreements involving intellectual property and contentious litigation. Leo Moore also advises on multi-jurisdictional intellectual property licensing deals. Consultant Carol Plunkett is also well regarded for her work on IP disputes. Litigation specialists Colette Brady and Charleen O’Keeffe were promoted to partner in September 2020.

Ireland > Information technology

(Hall of Fame)

David CullenWilliam Fry

William Fry handles technology matters including advising on technology service agreements, regulatory issues surrounding the rollout of new products, and strategic partnerships in this sector. The practice is also highly active in advising on M&A transactions involving technology companies. The team, which is praised by clients as ‘very experienced, responsive and commercially savvy‘, is led by David Cullen, a specialist in technology contracts and data protection work. Leo Moore is ‘very experienced and commercially astute‘ and John O’Connor handles commercial transactions including outsourcing and licensing agreements.