Fielding a ‘professional and proactive’ group, Arthur Cox stands out for its extensive experience across a varied spectrum of dispute resolution, with an additional track record in covering alternative dispute resolution. Recognised as ’tough but commercial’, Eve Mulconry leads the group and is widely recognised for her active dispute resolution and investigations practice, exhibiting notable knowledge of tax law. Andrew Lenny has considerable experience in advising on disputes through conciliation, mediation, litigation and arbitration proceedings. Joanelle O’Cleirigh is a seasoned litigator and a key port of call for healthcare and life sciences disputes, while Keith Smith maintains a strong reputation across the full gamut of complex disputes. Richard Willis focuses on financial and tech-related disputes, and Michael Twomey and Deirdre O’Mahony are recommended for all corporate and commercial disputes, with experience acting for both domestic and international clients. Jack Logan and Kate O’Donohoe are further important names to note.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘All the members of Arthur Cox bring the same qualities of being very professional and proactive. They understand the client position, adapt to its and make themselves available.’
- ‘Conall O'Shaughnessy is excellent.’
- ‘Keith Smith is a savvy and sensible litigation partner. Available and very helpful. Amelia Walsh and Robert Mac Carthy are excellent solicitors also on the team.'
- ‘Deirdre O'Mahony deserves specific mention. She doesn't just advise on legal issues, but acts as a true partner in problem-solving, bringing strategic insight alongside legal analysis. She has an excellent ability to anticipate challenges and provides clear, business-ready advice. She is consistently available, even at short notice.’
- ‘Tough yet commercial litigators, very responsive, really fight for their clients.’
- ‘Eve Mulconry is very hardworking, responsive, while also being an experienced strategic thinker. You can rely on that she will have thought out the angles. Tara Roche is a very strong senior associate who is very hardworking and really tries to get to know your business and aims.’
Key clients
- Ryanair
- Energia Group
- AB Volvo (Publ)
- Bank of Ireland
- Central Bank of Ireland
- CRH plc and Roadstone Limited
- daa
- Davy Target Investments PLC
- Dawn Meats Ireland Unlimited Company
- Facebook Ireland Limited
- Hines Real Estate
- TELUS
Work highlights
Representing Ryanair across a range of litigation including multi-jurisdictional screen scraping litigation and the high-profile application seeking a stay on the implementation of a passenger cap at Dublin Airport.
Advised Energia on the successful Commercial Court Judicial Review against the Commission for the Regulation of Utilities (Ireland’s energy and water economic utility regulator) in response to a Decision published by the Single Energy Market Committee purporting to implement the Regulation which concerns compensation for redispatching of electricity generators.
Acting for CRH plc and Roadstone Limited in defending “pyrite” related High Court cases, which has included, to date, over 400 cases concerning “stone infill” products and ongoing high-value litigation in the commercial division of the High Court.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Jack Logan
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Eve Mulconry
Other key lawyers
Andrew Lenny; Joanelle O’Cleirigh; Keith Smith; Richard Willis; Michael Twomey; Deirdre O'Mahony; Conall O’Shaughnessy; Tara Roche; Amelia Walsh; Robert Mac Carthy; Conor McClements; Joanelle O'Cleirigh; Treasa Kelly; Kate O'Donohoe; Jack Logan