Mason Hayes & Curran LLP — Ireland

About

- Managing Partner: Will Carmody - Chair: Philip Nolan - Number of partners: 124 - Languages: French, German, Italian, Portuguese, Russian, Spanish - Firm Overview We are an Irish business law firm with 124 partners and total staff in excess of 600. We understand the challenges domestic and international organisations face in business. We assist our clients in meeting their ongoing legal and commercial imperatives through every business life cycle. We were named ‘Law Firm of the Year: Republic of Ireland’ at The Lawyer European Awards 2025. The Lawyer European Awards recognise excellence across the European legal market and are regarded as one of the most respected honours in the industry. Corporate social responsibility is a natural fit with the way we do business. We invest in our society and communities through a range of focused programmes. - Our locations We have offices in London, New York and San Francisco, three of Ireland’s most important conduits for inward investment to Ireland. We have comprehensive knowledge of issues involved in investing and locating in a foreign country. - Quality approach Our legal services are grounded in deep expertise and informed by practical experience. We tailor our advice to our clients’ business and strategic objectives, giving them clear recommendations. This allows clients to make good, informed decisions and to anticipate and successfully navigate even the most complex matters. Our working style is versatile and collaborative, creating a shared perspective with clients so that legal solutions are developed together. Our service is award-winning and innovative. This approach is how we make a valuable and practical contribution to each client’s objectives. We have profound knowledge and experience in the following sectors: Energy, Technology, Financial Services, Built Environment, Healthcare and Life Sciences. - Main Areas of Practice Corporate: Our corporate team is recognised as a market leader, advising domestic and global businesses on a broad range of transactions. From high-growth start-ups to multinational corporations, we provide strategic counsel on some of the most high-profile, innovative, and complex deals in the Irish market. - Contact: Martin Kelleher Email: mkelleher@mhc.ie Dispute Resolution & Commercial Litigation: Our Dispute Resolution team has an outstanding track record in handling high-value and complex commercial disputes. We are leaders in boardroom and shareholder conflicts, intellectual property matters, regulatory investigations, employment issues, and competition disputes. We frequently advise international clients on multi-jurisdictional litigation, offering strategic guidance tailored to different legal systems worldwide. - Contact: Maurice Phelan Email: mphelan@mhc.ie - Contact: Gerard Kelly Email: gkelly@mhc.ie Employment & Benefits: Understanding the complexities employers face across industries, our Employment & Benefits team delivers tailored solutions that empower organisations to make informed, confident decisions. Our client base spans leading domestic and multinational employers who rely on us for strategic, business-focused employment law advice. - Contact: Melanie Crowley Email: mcrowley@mhc.ie Financial Services & Banking: Our Financial Services team delivers high-calibre advice to domestic and international clients across acquisition and leveraged finance, asset finance, debt capital markets, project finance, and transaction restructuring. We are particularly renowned for advising private equity and corporate clients on sophisticated financing structures. - Contact: Neil Campbell Email: ncampbell@mhc.ie Construction, Infrastructure & Utilities: Recognised as a dominant force in the Irish market, our team has extensive experience advising on complex projects. We represent clients in all dispute resolution forums and provide commercially driven, solution-focused legal support from project inception to completion. - Contact: Rory Kirrane SC Email: rkirrane@mhc.ie Real Estate: Home to Ireland’s largest real estate team, we offer unparalleled expertise in structuring and executing complex property transactions. Our clients include banks, state agencies, corporates, multinationals, and institutional investors. We have deep sectoral knowledge across energy, technology, healthcare, and hospitality. - Contact: Vanessa Byrne Email: vbyrne@mhc.ie - Contact: Michael Doran Email: mdoran@mhc.ie Technology: Our Data & Technology team is the first choice for multinational tech companies, reflecting our status as Ireland’s leading advisers on technology and data privacy matters. We advise social media and search platforms, as well as high-potential start-ups, on issues ranging from early-stage funding to intellectual property management and global privacy frameworks and investigations. - Contact: Philip Nolan Email: pnolan@mhc.ie Taxation: Our specialist Tax team, comprising internationally experienced professionals, provides cutting-edge tax solutions to corporate and individual clients. We focus on optimising Ireland’s tax framework as part of global tax management strategies for businesses and high-net-worth individuals. - Contact: Niamh Caffrey Email: ncaffrey@mhc.ie ### Staffing Figures - 600 Total Staff

Office locations

Practice areas

Lawyers in this office

Anne Harkin

Partner · Corporate / M&A

Anthony O’Hanlon

Partner · Investment Funds

Aoiffe Moran

Consulting Partner · Public / Administrative Law

Brian Horkan

Partner, Head of Health & Prosecutions · Healthcare

Catherine Allen

Partner, Head of Public, Regulatory and Investigations · Public Law

Catherine O’Flynn

Partner · Employment & Benefits

Christine O’Donovan

Partner · Financial Services

Ciara Deasy

Partner · Healthcare & Life Sciences

Claire Lord

Partner, Head of Corporate Governance · Corporate / M&A

Colin Monaghan

Partner · Dispute Resolution

Conall Geraghty

Partner · Start-ups & Emerging Companies

Daragh O’Shea

Partner, Head of Debt Capital Markets · Debt Capital Markets

David Gunn

Partner · Construction

David Hickey

Of Counsel · Healthcare

David McGovern

Partner, Head of Aviation & International Asset Finance · Aviation

David O’Donnell

Partner · Corporate / M&A

Declan Black

Partner · Litigation

Deirdre Munnelly

Partner · Litigation

Deirdre Nagle

Partner, Head of Planning and Environment Law · Planning & Environment

Dermot McGirr

Partner · Commercial

Dorit McCann

Partner, Head of Public Procurement · Competition / Antitrust

Edward Gleeson

Consultant · Dispute Resolution

Eimear O’Brien

Of Counsel · Intellectual Property

Elizabeth Ryan

Partner · Employment

Eoin Cassidy

Partner, Head of Energy · Energy

Frank Flanagan

Partner · Dispute Resolution

Ger Connolly

Partner · Employment

Gerard Kelly

Partner, Head of Intellectual Property Law and Co-Head of Dispute Resolution · Intellectual Property

Hannah Devoy

Partner · Construction

Hazel McDwyer

Partner · Intellectual Property

James Morrin

Partner · Restructuring & Insolvency

Jamie Fitzmaurice

Partner · Real Estate

Jason Harte

Partner, Head of Debt Recovery · Debt Recovery

Jay Sattin

Partner · Planning & Environment

Jevan Neilan

Partner, Head of San Francisco Office · Data & Technology

John Milligan

Senior Associate · Intellectual Property

Judith Riordan

Partner · Insolvency & Restructuring

Justin McKenna

Consultant · Corporate / M&A

Karol Fox

Partner · Banking & Finance

Katie McAuliffe

Of Counsel · Healthcare

Kevin Mangan

Partner, Co-Head of Tax · Tax

Kevin Power

Partner, Head of Medical Law · Medical Law

Laura Durning

Partner · Competition & Antitrust

Liam Brazil

Of Counsel · Corporate / M&A

Liam Flynn

Partner, Co-Head of Financial Regulation · Financial Regulation

Liam Guidera

Partner & Leader of Investigations and White Collar Crime practice · Investigations & White Collar Crime

Lisa Joyce

Partner · Public Sector

Luke Murray

Senior Associate · Data Protection & Privacy

Mark Fry

Partner · Technology

Martin Kelleher

Partner, Head of Corporate · Corporate / M&A

Maurice Phelan

Partner, Co-Head of Dispute Resolution · Dispute Resolution

Melanie Crowley

Partner, Head of Employment Law and Benefits · Employment

Michael Doran

Partner, Co-Head of Real Estate · Real Estate

Michael Madden

Partner · Regulatory

Michaela Herron

Partner, Head of Life Sciences and Head of Product Regulatory · Life Sciences

Micheál Grace

Partner · Banking & Finance

Neil Campbell

Partner, Head of Financial Services · Banking & Finance

Niall Michel

Partner · Litigation

Niamh Caffrey

Partner, Co-Head of Tax · Tax

Niamh Callaghan

Partner · Corporate / M&A