David Cullen


+353 1 639 5202
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David 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, in particular for online and digital markets.

Representative work includes advising multinational clients on:

  • the development, implementation and operation of several national IT infrastructure projects;
  • all aspects of data protection and privacy, dealing with large scale data and security breaches and cybersecurity;
  • corporate data protection/privacy related projects including advising on various matters involving the Office of the Data Protection Commissioner, audits, PIAs, preparation for GDPR, group implementation of policies and review of existing policies & procedures; and
  • negotiation of complex commercial contracts including outsourcing and naming rights agreements.

According to Chambers Europe 2020, David has been described by clients as "pragmatic and has a strong technology interest, which aids immensely in his understanding and his advice." 

One interviewee attests that he is "always available, responsive, timely and very well-versed." Chambers Europe 2019 

David Cullen is revered for his commercial prowess in intellectual property mandates. Chambers Europe 2018 

Practice head David Cullen "distils salient facts from complicated business scenarios". Legal 500 EMEA 2018

David Cullen is listed in Best Lawyers 2019 under 'The Best Lawyers in Ireland' for work in Information Technology Law. 

In Chambers Europe 2017, David impresses clients with his commercial IP practice, one of whom praises his "absolute excellence in IP law, coupled with his strong technology and business acumen." and that he is "deeply knowledgeable in the areas of privacy and technology."

In Chambers Europe 2016, sources say David "has really incredible experience in the area of technology and IP, and is cool, calm and pragmatic". Other clients say that "he has really incredible experience internationally and is cool and calm, with an extremely good understanding of the technology industry".


David Cullen copyLegal 500 Leading Individual 2019
Best Lawyers