Garrett Breen


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Garrett is a Partner in William Fry’s Litigation & Dispute Resolution Department specializing in commercial and regulatory litigation as well as contentious intellectual property issues. He has extensive experience of the Commercial Division of the High Court and various Tribunals of Enquiry and has prosecuted cases before the European Court of Justice. He has advised sector-specific regulators in Ireland and internationally. He also advises auditors and tax advisors on their statutory obligations and decision-making processes. Garrett has run many anti-counterfeiting campaigns for multinational brand holders. He also advises financial services firms who become subject to the Administrative Sanctions Procedures of the Central Bank.

Significant cases Garrett has been involved in recently include representing:-

  • Sir David and Sir Frederick Barclay in proceedings relating to the purchase of loans from the Special Liquidators of IBRC.
  • Thema International Fund Plc. in its action against HSBC Bank seeking the recovery of over $1 Billion following the Madoff fraud.
  • Commission for Communications Regulation in the first fine by the High Court of a telecoms operator (Vodafone) relating to the breach of the Roaming Regulations.

Garrett is listed in Best Lawyers 2019 under 'The Best Lawyers in Ireland' for work in Intellectual Property Law and Litigation.

Chambers Global 2017 state that the "excellent" Garrett Breen handles a range of disputes, and is noted by sources for his knowledge of the technology and telecommunications sectors. Clients say he provides a "no-nonsense approach and sound insight."  In Legal 500 EMEA 2017 Garrett is described as a ‘very practical adviser’.

Chambers Europe 2016 describe Garrett as being well positioned for major litigation cases, as he is "a good organiser of large litigation teams and well equipped for the logistics of the largest, most complex litigation."   

According to Chambers Global, 2015, Garrett Breen "is a determined, smart guy, who is absolutely dedicated to his clients." While Legal 500 EMEA, 2015 describe him as "first-class".

In Legal 500 2014 Garrett is lauded as being ‘a phenomenal strategic mind’. According to Chambers Global 2014, Garrett is hailed as a "fierce litigator" and clients agree they "trust him to always deliver"


Garrett Breen - Chambers Global 19

Legal 500 Recommended Lawyer 2019

IFLR Leading Lawyer - Highly Regarded 2019

Best Lawyers