Competition/European Law | Europe

A&L Goodbody remains one of the leading law firms in Ireland for competition law matters, with notable experience in both phase II merger control filings and high-profile follow-on damages actions. The team also advises on behavioural investigations before the CCPC and team members have experience in state aid and public procurement mandates.

Arthur Cox is highly esteemed for its ability to handle the competition law aspects of corporate transactions, including advising on phase II merger filings and foreign direct investment notifications. The law firm also represents clients in CCPC behavioural investigations and in competition litigation.

Matheson LLP enters the top tier of the rankings this year on the back of strong activity on the competition law aspects of transactions, advising on foreign direct investment and merger control filings, including those requiring phase II investigations. The law firm is also active in behavioural mandates, especially high-profile damages actions.

William Fry LLP has a strong focus on advising clients on merger control and foreign direct investment filings. In addition, the law firm represents clients in behavioural investigations and follow-on damages actions. Team members are active in state aid and public procurement matters.

Mason Hayes & Curran LLP is particularly active in the competition law aspects of proposed transactions, advising on merger control and foreign direct investment filings. The law firm additionally assists with competition law investigations and compliance matters. Team members have experience in state aid and public procurement mandates.

McCann FitzGerald LLP's competition law team is particularly active in merger control filings. It has additional experience in behavioural mandates, representing clients in both investigations and enforcement proceedings. Team members have further expertise in state aid and compliance matters. The team has recently expanded with the arrival of Liam Heylin in October 2025.

Byrne Wallace Shields offers notable activity in merger control and state aid mandates. The law firm also represents clients in CCPC investigations and follow-on actions. The team further assists with competition law compliance issues.