Patrick J. Harrison is a partner at Sidley. He advises on all aspects of EU and UK competition law. Patrick spent four years in Brussels (home to the European Commission) before relocating to Sidley’s London office in 2007. He has significant experience representing clients before the European Commission and the UK’s Competition and Markets Authority (CMA), securing favorable results for clients requiring regulatory approvals, or facing regulatory challenges. Patrick focuses his practice on merger control, cartel and dominance investigations, competition litigation and distribution agreements.
Admitted in both England and Wales and Ireland, Patrick has also represented clients in EU and UK judicial review proceedings regarding both competition cases and legislation of broader application. In this context, he has pleaded a number of cases before the EU Courts.
Patrick is recognized in Chambers Europe and Chambers UK 2022 for Competition Law, with clients saying he is “extremely hard-working and takes the time to listen to us. (Chambers Europe)” and an “excellent antitrust lawyer, very pragmatic and knowledgeable, and a pleasure to work with.(Chambers UK)” He was also ranked in Chambers UK 2021 for Competition Law, with clients in the previous 2020 edition describing Patrick as “articulate, clear and very responsive.” In the 2019 edition, clients also praised his “strong knowledge and down-to-earth style, which make the negotiations as painless as they can be.” He was also recommended in The Legal 500 UK 2017 for EU and Competition, where he is “praised for his ‘mastery of the substantive competition laws,’ ‘fantastic client-oriented manner,’ ‘fresh approach,’ and ‘down-to-earth style.’” Patrick was also recognized by Law360 in 2017 as one of just five “Rising Stars” in the Antitrust/Competition category.
