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Claire O'Brien

She/herSenior Associate
Claire O’Brien practices in the area of intellectual property and technology, with particular focus on data protection, technology outsourcings and digital regulation. Her clients include companies in a range of sectors including financial services, technology, life sciences and industrials.


  • Advising on the data transfer compliance strategy and vendor remediation programme for one of the largest domestic financial institutions.
  • Advised on the commercial contracts and IT aspects of a large domestic hospitality and hotel chain.
  • Providing strategic advice in respect of a multinational pharmaceuticals company on their international data transfers, focussing on their intragroup and vendor transfers.
  • Part of a global privacy team advising a global life sciences conglomerate as part of the spinout of one of its business units valued at USD8bn, supporting on advising both in respect of existing privacy compliance obligation gaps across the US, EU and UK, and also creating a bespoke privacy and data protection compliance program for the new SpinCo. which involves over 35 workstreams.
  • Advising a software company with USD10bn valuation on its categorisation under the Digital Services Act.
  • Advising a software company valued at USD3.7bn on its categorisation under the Audiovisual Media Services Directive.
  • University of London, PGDip 2021
  • Queen’s University Belfast, LLM, 2007
  • University of Limerick, LLB, 2006

Prior Experience

  • 2022 – 2023 Lead Commercial Counsel in hyper-growth fintech
  • 2017 – 2022 Senior Commercial Lawyer in energy supply and services company
  • 2014 – 2017 Associate in top-tier Dublin based law firm
  • 2011 – 2013 Trainee in top-tier Dublin based law firm