Pat Treacy


Pat Treacy is a partner in the Competition team at Bristows LLP. 

Pat has specialised in EU law and competition law for almost 30 years and has been involved in landmark cases at EU and national level. In addition to her expertise across the range of competition law, she has particular strengths in advising on the complex legal and policy issues arising where competition law and intellectual property law intersect. Consequently, clients in high technology sectors including life sciences and TMT seek her advice regularly.

Pat represents clients before the competition authorities and the courts, whilst also advising on competition law issues in complex agreements (including settlement, R&D and licensing agreements). Pat advises many of the Firm's clients on the competition law responsibilities affecting dominant companies.

She and her team assist clients with competition compliance programmes and preparation for "dawn raids".

Pat is a member of the Competition Law Association; the British Institute of International and Comparative Law; and the Antitrust section of the American Bar Association. She is on the editorial board of the Journal of Intellectual Property Law and Practice. Pat lectures and writes widely on topical issues. She also teaches the competition law module on the University of Oxford Postgraduate Diploma in Intellectual Property Law and Practice course.

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Year Qualified



MA Law, University of Cambridge