About
Mason Hayes & Curran LLP is an Irish business law firm with 124 partners and total staff in excess of 600, providing legal advice across business life cycles and sectors including energy and technology. The firm has offices in Ireland, London, New York and San Francisco and was named ‘Law Firm of the Year: Republic of Ireland’ at The Lawyer European Awards 2025.
Practice areas
Office
Lawyers at this firm
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
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