Firm Profile > Mason Hayes & Curran LLP > Dublin, Ireland

Mason Hayes & Curran LLP
D04 TR29

Banking and finance Tier 1

Mason Hayes & Curran LLP advises its broad client base of domestic and international banks, investment funds and corporate borrowers on a range of complex financial transactions, including asset finance, real estate finance, acquisition finance and project finance. The team is also highly active in loan portfolio sales and acquisitions, where Neil Campbell is particularly experienced. Practice head William Carmody is well known for his expertise in the financing of renewable energy projects, while Micheál Grace handles international matters. Corporate banking specialist Jenny Ahern and Karol Fox, who is experienced in property finance, are also noted.

Practice head(s):

William Carmody

Other key lawyers:

Neil Campbell; Micheál Grace; Jenny Ahern; Karol Fox; Irene Nic Chárthaigh


‘Partner availability and engagement is always better with Mason Hayes & Curran.’

‘Very personal approach and great understanding of the client, their needs and more importantly their constraints. Can handle all requests from the benign to the complex and deal with each in a professional manner.’

‘Neil Campbell and Irene Nic Chárthaigh are standout individuals within the team that provide 100% commitment on a daily basis and put the bank’s interests first in all their dealings. Their professional and personal approach, along with their accessibility at all times, makes them stand out.’

Key clients

Allied Irish Banks,

Bank of Ireland

Ulster Bank Ireland DAC/Royal Bank of Scotland

Barclays Bank Ireland PLC/ Barclays Bank PLC

Permanent tsb, p.l.c.

Irish Residential Properties REIT Plc

Greencoat Renewables PLC

Toyota Financial Services (Ireland) DAC

Norddeutsche Landesbank Girozentrale

NTR plc


Export Development Canada

HSBC Bank plc

Edgeconnex Inc

Pioneer Point Partners

Davidson Kempner

McGettigan Group

Fane Valley

Commercial, corporate and M&A Tier 1

The 'highly professional and competent' team at Mason Hayes & Curran LLP has extensive experience of domestic and cross-border M&A, private equity transactions and group reorganisations. It has particular expertise in the technology, energy, life sciences and charity sectors. In addition, the commercial practice advises on large outsourcings and distribution agreements. David O’Donnell heads up the corporate team, which includes Justin McKenna, who is particularly experienced in public M&A. Martin Kelleher has notable expertise in the life sciences sector, while new partner Conall Geraghty stands out for his advice to fast-growth businesses. Claire Lord leads the corporate governance and compliance team.

Practice head(s):

David O’Donnell; Philip Nolan

Other key lawyers:

Justin McKenna; Liam Brazil; Martin Kelleher; Claire Lord; David Mangan; Conall Geraghty; Wendy Hederman


‘Mason Hayes & Curran is a superb multidisciplinary firm. I have had great experiences over the years across a range of functions. In relation to corporate issues, Claire Lord is a fantastic, clear-sighted and articulate corporate law adviser. She is supported both from the bottom up, through diligent junior lawyers, and cross-functionally, with support from excellent peers/partners.’

‘Covering the full spectrum of commercial legal services. Highly professional and competent. Excellent balance of legal advice tempered with commercial awareness.’

‘I would especially single out Martin Kelleher, who has demonstrated exceptional commitment to the project in hand and made himself available at all times of the day or night to meet deadlines, without compromising on the quality of service.’

‘MHC’s teams are known to be some of the strongest teams across business and industry in Ireland. Our commercial team from MHC was more than knowledgeable of all the latest developments in our area of business and were able to provide us with immediate advice and solutions on how to proceed in an ever-changing marketplace.’

Key clients

Element Power

Coratallon Limited (Fane Valley Co-op)

Kyne Communications Limited

The Root System Holding Company Limited t/a Strong Roots

JBM Solar Projects Limited

Kennedy Wilson

Department of Communications, Climate Action & Environment

Paulus Holdings Limited t/a LetsGetChecked

Blue Face Limited

SCISYS Group plc

Construction Tier 1

Mason Hayes & Curran LLP stands out for its work advising on major industrial projects, in sectors including energy, telecoms, infrastructure and manufacturing. The team acts for contractors, developers and state bodies on contractual work as well as representing them in disputes in the High Court, commercial courts and arbitration. The practice also acts for financial institutions in acquisition and developments. Rory Kirrane SC leads the team, and was appointed senior counsel by the government of Ireland in 2020; elsewhere, Eoin Cassidy is active in advising on renewable energy projects and Susan Bryson handles disputes.

Practice head(s):

Rory Kirrane SC

Other key lawyers:

Eoin Cassidy; Susan Bryson


‘The practice has a unique knowledge of the renewables construction sector in Ireland and understands the planning environment which is exacting and open to challenges at every turn. The team has an ability to take a pragmatic view on aspects of project acquisition and the financing process and understands the requirements of all parties. MHC’s counsel has proved invaluable on many occasions.’

‘The team is very approachable, knowledgeable, organised and responds to queries in a clear and timely fashion. ‘

‘A large team with expertise across all areas of construction and the capacity to deliver on time every time.’

‘Eoin Cassidy is very good at setting the strategy for his team and legal requirements for a project. Always available and able to steer discussions in the right direction.’

‘Rory Kirrane is a great speaker, hugely knowledgeable, approachable, organised, punctual. An expert in all things related to construction law, contract law/administration, dispute resolution, procurement, etc.’

‘Rory Kirrane is an outstanding litigator with expertise in dealing with large, high value and technically complex construction disputes.’

‘The service levels (including technology etc) are better than any other law firm I have used. Their billing is simple and easy to follow. ‘

‘They have strong industry knowledge of PPPs and public procurement and breadth of experience from having worked with and advised directly both public and private sector clients.’

Key clients

Exyte Nothern Europe Limited

Department of Communications, Climate Action & Environment

SSE Renewables Ireland Limited

Irish Residential Properties REIT PLC

Allergan Pharmaceuticals Ireland

BAM Civil Limited and Dragados Ireland Limited

Hines Real Estate Ireland

Irish Life Assurance plc

SDR Property Owners Management Company CLG

NTR plc

Data privacy and data protection Tier 1

Mason Hayes & Curran LLP stands out for its work representing prominent clients in high-profile Data Protection Commission inquiries. The team is handling several of the first inquiries related to GDPR regulations, and acts for clients before the Irish High Court and the Court of Justice of the European Union. In addition to acting in contentious matters, the team also advises clients on non-contentious issues, including the launch of new products in Ireland. The practice is led by Philip Nolan, who alongside Robert McDonagh advises multinational technology companies on European regulatory matters. Oisín Tobin recently returned to Dublin from the firm's San Francisco office and handles both investigations and non-contentious matters. Jevan Neilan was promoted to partner in May 2020. John Farrell is also noted.

Practice head(s):

Philip Nolan

Other key lawyers:

Robert McDonagh; Oisín Tobin; John Farrell; Brian Johnston; Jevan Neilan

Key clients






Etsy Ireland

Slack Technologies Limited


Airbnb Ireland


Dispute resolution Tier 1

Under the leadership of Maurice Phelan, Mason Hayes & Curran LLP's team handles disputes in the High Court, Commercial Court, Court of Appeal as well as in arbitration. The practice is frequently instructed by prominent Irish and multinational companies, as well as state bodies. Phelan is experienced in banking and insolvency-related litigation, and is praised by clients for providing 'careful but commercial solutions'. Liam Guidera specialises in investigations and white-collar crime work, while Colin Monaghan is 'extremely effective, knowledgeable, and intuitive in his thinking' and has a broad practice.

Practice head(s):

Maurice Phelan

Other key lawyers:

Liam Guidera; Colin Monaghan; Sinéad Power; Colm Farrell; Declan Black; Gerard Kelly; Peter Johnston; Judith Riordan


‘Mason Hayes & Curran has had a market-leading litigation team for a long time within the Irish market. I find the firm to be responsive, practical and speedy.’

‘Declan Black, although now the managing partner, still plays a strategic role in larger cases. Objectively, he is one of the very top litigation solicitors in the Irish market. Liam Guidera is a much more senior solicitor than the others on the list – he would be described as a seasoned operator whose breadth of experience is his strongest suit. Gerard Kelly has an extremely large following in intellectual property and technology related litigation. He acts for clients like Virgin Media, Facebook and Twitter in high-profile matters and is a market-leader in that area of litigation. Colin Monaghan is a very client-focused solicitor who is extremely responsive. Peter Johnston is an extremely thorough lawyer who always thinks through his cases very well. Judith Riordan has particular expertise in insolvency work.’

‘We don’t want to be involved in commercial litigation but, when it happens, we want to evidence that we are taking the matter seriously and that we are obtaining good advice. The dispute resolution practice of MH&C has an excellent reputation and ticks these boxes. We take it for granted that they know the legal landscape etc. and importantly MH&C are responsive to our needs, and those of our insurers, and are able to articulate the legal issues so that we at all times understand the process and the arguments. Litigation is an expensive process but MH&C are commercial in resolving matters, not just litigation focused and represent good value for money in general terms.’

‘We work mainly with Peter Johnston, dispute resolution partner, and Kevin Farrell, senior associate. From our perspective, they understand our firm, our values and what is important to us. They also understand that, in relation to litigation, we must be mindful of the concerns of our insurers.’

‘The practice is very commercial. It recognises the technical issues that arise but grounds its advice in commercial reality. It is a very supportive practice. The leaders demonstrate real regard for the relationship and, since most have had in-house experience themselves, they show due appreciation for the demands in-house solicitors face when advising their instructing businesses. Compared to other firms, each of them supports in a way which makes you feel like you are a key client of the practice. Also, they are highly responsive.’

‘Maurice Phelan can be depended upon to provide careful but commercial solutions to seemingly intractable problems. I knew I could trust his judgment.’

‘Well co-ordinated, prompt in their response, with issues allocated to the appropriate expert within the organisation. Advice and support provided has been precise and comprehensive.’

‘I have worked closely with Colin Monaghan and found him to be extremely effective, knowledgeable, and intuitive in his thinking. He has a great ability to process detail and form expert legal opinions quickly. His knowledge of the area of commercial litigation is superb and I would trust his guidance implicitly. I would have no hesitation engaging Colin again on any relevant matter.’

Key clients BV

Facebook Ireland Limited

Bank of Scotland plc (part of the Lloyds Banking Group plc)

ESM Fund I, L.P.

Arthropharm (Europe) Limited

Health Insurance Authority

Commission for Aviation Regulation


IMRF II Frascati Limited Partnership


Employment Tier 1

Mason Hayes & Curran LLP provides 'comprehensive, fast, precise and accurate' advice to clients on complex employment law matters. In 2020, its work included industrial relations disputes, large scale redundancies and investigations into employee misconduct. The team also represents employers in litigation before the High Court and Workplace Relations Commission. Practice head Melanie Crowley, who is 'excellent', was recently appointed to the Advisory Board of the American Employment Lawyers Council. Ger Connolly specialises in litigation and TUPE. Senior associate Orla O’Leary is also recommended.

Practice head(s):

Melanie Crowley

Other key lawyers:

Ger Connolly; Ronnie Neville; Paul Rochford; Orla O’Leary


‘Good practical advice, with a willingness to “call it” rather than qualify or avoid hard answers.’

‘Melanie Crowley and Ger Connolly provide good, practical advice. They also have a good industry-wide perspective which helps inform their advice and is very useful for us to “benchmark” our approach on various matters’

‘My experience has been extremely positive in working with Mason Hayes & Curran. In terms of strengths, they have always taken a commercial and pragmatic approach to resolving complex legal issues to achieve the desired result for their clients’ businesses. I have found the firm to be ahead of their competitors in the manner in which they have continuously demonstrated an ability to convey difficult legal concepts in a concise, pragmatic and accessible manner.’

Key clients

Robert Walters

An Irish Bank

SK Biotech


Ulster Bank (part of RBS)

Fane Valley Co-operative Society

Multinational Company

SSE Airtricity



Energy and natural resources Tier 1

Mason Hayes & Curran LLP stands out for its activity in the renewables energy sector. It has seen an uptick in work relating to the burgeoning area of onshore and offshore wind projects, where it handles the financing and development of projects as well as transactions involving project assets. The team also acts for state bodies on regulatory matters. William Carmody, who has a core focus on financing, and Rory Kirrane SC, who handles project development and contentious work and was appointed senior counsel in 2020, are the practice heads. Eoin Cassidy is an 'exceptional' lawyer and planning and environmental specialist Deirdre Nagle is 'dedicated, client focused and hardworking'. David Gunn is another name to note.

Practice head(s):

Rory Kirrane SC; William Carmody

Other key lawyers:

Eoin Cassidy; Deirdre Nagle; Peter McLay; David Gunn


‘The team have broad depth of experience across all key areas in Irish renewables, including construction contracts, regulation, property and planning. Their unique knowledge and experience in the Irish market means you are always receiving well balanced, up to date and sound advice.’

‘Eoin Cassidy is an exceptional lawyer combining the three key attributes we seek. Firstly, he’s not afraid to take the lead on commercial issues. Secondly he’s approachable at all times. Thirdly, he will take a balanced and well researched approach to any challenge presented to him. These qualities are also shared by other team members who will approach each transaction with the same level of excellence.’

‘The team has excellent knowledge of the energy sector in Ireland and of how it is impacted by national and European law and regulations. Their experience extends across the range including electricity, renewable energy, gas and petroleum. They have extensive experience in assisting the developers of large energy related projects.’

‘I found Deirdre Nagle to be a dedicated, client focused and hardworking lawyer with exceptional knowledge and experience in the area of energy law and regulation in Ireland. She has extensive experience of litigation, arbitration and mediation cases in the energy sector. She is particularly knowledgeable in the area of electricity regulation and utilities.’

‘Eoin Cassidy and William Carmody are extremely well informed about the detailed steps that our project needs to go through and the issues that need to be addressed.’

‘I have continued to have great work from Peter McLay and his associate Keith Newman on many project contracts.’

‘Eoin Cassidy is excellent in legal due diligence, ensuring as lenders there are no risks we are not appraised of.’

‘Both Eoin and Peter are knowledgeable and this comes through during negotiations.’

Key clients

SSE plc

Irish Water

Norddeutsche Landesbank Girozentrale


Bank of Ireland

EirGrid plc

NTR plc

Ulster Bank


Allied Irish Banks, p.l.c.


Sustainable Energy Authority of Ireland


Pioneer Point Partners

EU and competition Tier 1

Highlighted for its 'excellent client service and strategic advice', Mason Hayes & Curran LLP has particular expertise in merger control, with experience advising on complex phase II mergers. High-profile competition litigation and CCPC investigations, state aid and public procurement are also key areas of strength for the team, which is particularly active in competition matters in the technology, media and energy sectors. The 'fantastic' Niall Collins leads the practice, while Tara Kelly has significant experience in advising private equity firms on competition matters, and Michael Madden specialises in media merger control and state aid.

Practice head(s):

Niall Collins

Other key lawyers:

Tara Kelly; Michael Madden; Liam Heylin; Laura Durning


‘Excellent client service, strategic advice on Irish competition issues and very well led by Niall Collins.’

‘Niall Collins is a fantastic lawyer to work with. He co-counsels on matters extremely well. His client service levels, knowledge and proactive attitude are real strengths.’

Key clients

Elis S.A.

CapVest Partners LLP

Ticketmaster / Live Nation

CNH Industrial / Iveco

The Blackstone Group L.P.

The Carlyle Group

Valero Energy

Discovery Communications

TELUS Corporation

21st Century Fox

Healthcare and life sciences Tier 1

Noted for its 'excellent service and advice', Mason Hayes & Curran LLP has significant expertise in healthcare litigation, defending public and private sector clients against high-profile medical negligence claims. Other areas of strength include M&A in the life sciences sector, patent litigation and regulatory matters. Kevin Power, who specialises in medical negligence and product liability litigation, and Martin Kelleher, who focuses on corporate transactions, jointly lead the team. Gerard Kelly advises on IP matters, Michaela Herron has significant expertise in product liability matters, particularly relating to medical devices, and senior associate Ciara Deasy focuses on healthcare litigation.

Practice head(s):

Kevin Power; Martin Kelleher

Other key lawyers:

Gerard Kelly; Michaela Herron; Gemma Coady; Keelin Cowhey; Brian Horkan; Ciara Deasy; Katie McAuliffe


‘A good diverse team covering all aspects of legal knowledge required for our business.’

‘Michaela Herron is very proactive.’

‘Excellent service and advice provided by a professional team. Always a pleasure to deal with.’

‘Everyone I work with on the team delivers their work to a very high standard. Their advice is clear and concise. Special mention must be given to Kevin Power, who runs an excellent team. Ciara Deasy’s work is exceptional and her advice is so clearly set out from an early stage right to the end when dealing with negotiation of solicitor’s costs.’

Key clients

Clinical Indemnity Scheme of the State Claims Agency

Health Service Executive (HSE)

Quest Diagnostics Incorporated

Voluntary Healthcare Forum

Child and Family Agency (Tusla)

The Nursing & Midwifery Board of Ireland

The Irish Medical Council

St Patrick’s Mental Health Services

Mater Misericordiae Hospital, Dublin

Allergan Limited

Information technology Tier 1

Mason Hayes & Curran LLP handles contractual, regulatory, and data protection matters for some of the most prominent multinationals in the Irish market. The team assists clients with drafting contracts with customers as well as commercial purchasers, and frequently acts for companies offering software-as-a-service products. Philip Nolan leads the practice, and has a client base including international and Irish technology companies. Robert McDonagh acts for both state bodies and the private sector in contractual work, while John Farrell 'stands out for his ability to bring practical solutions to complicated technology problems'.

Practice head(s):

Philip Nolan

Other key lawyers:

Robert McDonagh; John Farrell; Wendy Hederman; Kate Higgs


‘A really strong team who understand the law relating to our business so well and is able to articulate to non-law people in a very simple way. This is really helpful to us where we see them being very unique. Our engagements with MHC have been excellent and they always pull through when advice is required, even at short notice.’

‘John Farrell is our trusted legal advisor who has helped us enormously over the past two years. With his help we have secured contracts with MNCs at speed and on terms favourable to our company. John explains the law in a clear and concise way for us to understand and he understands the commercial needs we have without complicating the law for us.’

‘Robert McDonagh and Ruairi McDermott have given us very practical and concise advice even about very complicated matters. They’ve become my go-to for GDPR advice.’

‘Mason Hayes & Curran’s information technology lawyers are as passionate about the technology as they are the law. The firm has handpicked and trained professionals who speak and understand the language of technology.’

‘John Farrell stands out as a rising star within Mason Hayes & Curran’s information technology department. John’s interest in, and understanding of, technology is second to none, while his manner is practical, approachable and helpful. No question is too big or too small and I would not hesitate to recommend John to start-ups and multinationals alike. ’

‘I think what makes MHC’s IT practice unique is how practical they are. Unlike other firms of their scale they have an incredible ability to find working solutions rather than simply spotting issues or giving warnings. Central to their approach is adopting a truly commercial outlook that means it feels like you’re working with colleagues or teammates rather than consultants.’

‘John Farrell in particular stands out for his ability to bring practical solutions to complicated technology problems. His patience, personable manner and ability to distil intricate obstacles into pragmatic steps makes him a leading advisor in the Irish market. Additionally his work with some of the leading global technology companies means he’s in a unique position to leverage his experience on a variety of privacy, commercial and e-commerce matters. Kate Higgs also deserves mention as someone who provides clear-cut advice and can anticipate exactly what to focus on even on the largest of projects. Kate can always be relied upon to cut to the core of a problem and has a distinct talent for coming up with innovative options, especially with regard to data protection challenges.’

‘John Farrell is an excellent resource to the firm, with the broad knowledge needed in larger commercial contract transactions, whilst always willing to get into the details when needed. The efficient yet methodical approach from Kate Higgs has been key to identifying and addressing issues, before they even arise.’

Key clients

Department of Communications, Climate Action & Environment


WhatsApp Ireland Limited

Facebook Ireland Limited

Instagram (Facebook Ireland Limited)






Riot Games

Commission for Communications Regulation


Insolvency and corporate restructuring Tier 1

Mason Hayes & Curran LLP advises on the full range of insolvency and restructuring matters, from assisting the liquidators of distressed companies to representing creditors in court actions to recover debts. In addition to representing insolvency practitioners from the Big Four accountancy firms, the practice also counts a number of financial institutions among its clients. Practice co-head Judith Riordan handles both contentious and non-contentious insolvency work, including cross-border matters, and fellow co-head Maurice Phelan frequently acts in litigation. Frank Flanagan provides 'succinct commercial advice at the right times' and David Ormsby offers a 'fresh and innovative approach to restructuring and related litigation'.

Practice head(s):

Maurice Phelan; Judith Riordan

Other key lawyers:

Frank Flanagan; David Ormsby; John Bollard


‘I found Maurice and the team at MHC to be clear and concise in what their advice was in each particular case. What made them stand out was the high level of work produced in the most efficient manner. In my line of work a number of different legal firms are engaged and there is usually an offset between quality and efficiency; however MHC provided both to the highest level.’

‘Having worked with Maurice Phelan on a high level case for the last couple of years I can say that I have no higher praise than to say that I have yet to come across any other partner of a legal firm who engages consistently to ensure that the matter in hand is being handled efficiently to the highest level. In addition to providing a service of the highest quality, Maurice also was shown to be polite and stern when required which is required in difficult litigation.’

‘David Ormsby is a new partner bringing a fresh and innovative approach to restructuring and related litigation. Liam Guidera is a particularly thoughtful solicitor with a dedication to client service. Extremely well liked by clients.’

‘Frank Flanagan attends to matters with almost immediate responses and has also proved extremely effective in dealing with a tricky commercial and legal issue.’

‘Frank Flanagan was approachable and provided succinct commercial advice at the right times. Colm Farrell developed a strategy that took the heat out of the litigation and identified the solution that worked best for the receivers and the secured creditor. He kept us informed and developed a commercial but economic approach to deal with the plaintiff and co-respondents.’

‘Maurice Phelan is very commercial, provides calm advice under pressure, and takes the bigger picture into account. Judith Riordan is excellent at managing tricky and complex restructuring cases.’

‘Great strength in depth. Judith Riordan is a very experienced solicitor with wide insolvency knowledge. David Ormsby is very responsive, providing good commercial legal advice. John Bollard is a smart up and coming solicitor.’

Key clients





Duff & Phelps

Irish subsidiary companies in the Thomas Cook Group


Bank of Scotland plc

Bank of Ireland

McStay Luby

Ulster Bank


Friel Stafford

Insurance Tier 1

'Dynamic and practical in its approach', the team at Mason Hayes & Curran LLP is well known for its experience in insurance litigation, with expertise in claims in the construction, education, retail and healthcare sectors, particularly complex personal injury and clinical negligence cases. The team acts for large insurers and claims management companies, and is also noted for its advice to self-insured companies. Rachel Kavanagh, who counts a number of retailers among her clients, leads the team, which also includes the experienced Ailbhe Gilvarry and Deirdre Munnelly. Rowena Fitzgerald handles regulatory matters.

Practice head(s):

Rachel Kavanagh

Other key lawyers:

Ailbhe Gilvarry; Deirdre Munnelly; Rowena Fitzgerald; Laura Keane


‘Mason Hayes & Curran deliver a quality independent service.’

‘I have had the pleasure of working with Rachel Kavanagh and Laura Keane. Both are excellent communicators and think strategically in the best interests of their clients.’

‘MHC are young, dynamic, practical in their approach, very client focused and excel at making complex problems manageable. They have speedy strategic thinking, see the route through and translate options really clearly for clients.’

‘Rachel Kavanagh and Deirdre Munnelly have a directness of approach, clarity of communication and total lack of bureaucracy that makes complex problems simple.’

‘Mason Hayes & Curran have a wealth of knowledge and experience in-house.’

‘I have always found the fee earners at Mason Hayes & Curran a very safe pair of hands.’

‘Mason Hayes & Curran have many strengths. I find their knowledge very strong and they have a great team. They are very well respected within the area of personal injury defence litigation and have a strong reputation. Notwithstanding the above, they also have a very personable approach and always make a client feel very valued.’

Key clients


State Claims Agency

Irish Life



Aon Claims Management

Davies Ireland




Intellectual property Tier 1

Offering 'depth of knowledge that is second to none', Mason Hayes & Curran LLP advises multinational clients from a range of sectors on the registration, commercialisation and protection of intellectual property. The team's litigation work covers complex disputes in sectors including food and beverages, technology, and pharmaceutical. The team also advises a number of social media clients on Norwich Pharmacal orders related to breaches of copyrights by users of their sites. Practice head Gerard Kelly is known for handling contentious disputes and Brian McElligott handles much of the team's advisory IP work. Senior associate Eimear O’Brien is also noted for IP litigation.

Practice head(s):

Gerard Kelly

Other key lawyers:

Brian McElligott; Eimear O’Brien


‘The Intellectual Property team have a depth of knowledge that is second to none. ’

‘Gerard Kelly has a wealth of knowledge on contentious IP matters and is very client focused.’

‘The IP team at Mason Hayes & Curran combine in depth legal expertise with a commercial “can do” approach. They know their stuff and are responsive and a pleasure to work with.’

‘The Intellectual Property practice provides commercially practical advice. It does not shy away from the difficult questions – but gives clear guidance on what exactly should be done. Key strengths are in AI and patent and trademark filing and best strategy for your business.’

‘Brian McElligott is an excellent IP and Technology lawyer. He also has a passion for AI and seems to be the leading lawyer in Ireland on this very hot topic.’

‘Responds in a very timely manner, very informative and patient enough to answer any questions, no matter how trivial they may be.’

‘Brian McElligott and the team at MHC perform top notch service for our US-based clients. We always look forward to the personable responses and total care. I know we can trust our US clients with MHC.’

‘Eimear O’Brien is an up-and-coming senior associate.’

Key clients B.V

Boyne Valley Unlimited Company

Facebook Ireland Limited

Julius Sämann Ltd.

Kerry Group

The Minister for Communications, Climate Action and Environment

Virgin Media Television Limited

Teva Pharmaceuticals Ireland

Celltrion Inc., Celltrion Healthcare Hungary Kft., Mundipharma International Limited and Mundipharma Pharmaceuticals Ltd

Damien Rice and Damien Rice Music Limited

Media and entertainment Tier 1

Mason Hayes & Curran LLP stands out for its work advising clients in burgeoning areas of media and entertainment. It is sought out by social media companies to assist with issues including the obligations of companies towards content posted on their platforms. The team also advises a number of clients on EU regulations, such as the impact of the transposition of the Audiovisual Media Services Directive into Irish law. Michael Madden leads the practice, and has broad experience in this area. The team also frequently collaborates with the firm's technology, corporate, commercial and dispute resolution practices to service clients.

Practice head(s):

Michael Madden

Key clients


Raidió Teilifís Éireann (national broadcaster)

Virgin Media

Verizon Media (formerly Yahoo)

Sports Information Services (SIS)


Pensions and employee benefits Tier 1

Under the leadership of Stephen Gillick, Mason Hayes & Curran LLP's team handles complex, highly technical pensions matters, ranging from the revision and closure of defined benefit schemes to the development of novel pension products. The team also advises clients on complaints made to the Pension Ombudsman. Its client base includes prominent multinationals active in the Irish market. The experienced Peggy Hughes is another name to note.

Practice head(s):

Stephen Gillick

Other key lawyers:

Peggy Hughes


‘Peggy Hughes dealt with the advice requested. It was a specific query and Peggy dealt well with our query including taking the time to fully explain the various aspects, the judgements involved and the basis of the conclusions and to fully understand the context of the query.

Planning and environment Tier 1

Mason Hayes & Curran LLP stands out for its work in the wind energy sector, advising a range of clients on planning and environmental issues surrounding onshore and offshore wind projects. The team also advises on projects in the power, water, and transportation sectors, acting as the main advisers to a number of state bodies as well as representing developers and contractors. Deirdre Nagle leads the team, handling both contentious and non-contentious work. Senior associate Eoin Brady provides additional support.

Practice head(s):

Deirdre Nagle

Other key lawyers:

Eoin Brady


‘Deirdre Nagle’s experience in major infrastructure planning applications accumulated over the years from advising EirGrid as in-house solicitor gives her the advantage of having acted on major projects both as a client adviser and as an external adviser.’

‘Deirdre Nagle is an exceptional planning and environmental lawyer with massive experience in large and complex projects.’

‘Highly responsive and adaptable resources. The MHC team have an in depth knowledge of the Irish legal/planning system and associated processes and best practice around environmental assessment etc. and mitigation of legal risks.’

‘Even though my company is one of many clients of MHC I have always felt prioritized and that relevant partners and associates are available at short notice when urgent matters arise. Eoin Brady in particular has provided some excellent service with regard to legal queries around the consenting process associated with a significant transboundary project.’

‘We get an exceptional service from the team on the legal reviews for our wind farm EIA documents. Thorough examination with solid and practical advice.’

‘Deirdre Nagle has given us the best of support from day one. As mentioned previously she thoroughly reviews the documents and comes up with solutions or practical advice on the approach to difficult parts of the EIAR which helps bring our EIAR consultants along rather than giving them a list of comments without the background information. She has made herself available for calls with our consultants where needed and this is extremely helpful.’

‘This is a pragmatic practice and their approach is to deliver the entire project and see it through for the agreed fee. They are incredibly helpful and have helped our team learn the intricacies of the law as it applies to our business. ’

‘Deirdre Nagle is an amazing lawyer, formerly in house with great experience, super with clients and understands complexity of environmental issues and drives cost efficient and streamlined approaches. Eoin Brady is a great lawyer with great work ethic and deals effectively with lawyers across the business. He is a very well regarded former in house lawyer.’

Key clients



Brookfield Renewable

RWE Renewable/Innogy

PJ Hegartys


Irish Water


NTR plc


Pioneer Point Partners

Public sector Tier 1

Public law litigation is a significant area of expertise for the 'reliable, practical and solution-driven' team at Mason Hayes & Curran LLP, which is highly experienced in judicial review, statutory appeals and contentious public procurement. The team is also active in advising public bodies on their statutory powers, data protection investigations, and professional regulation and disciplinary law. Practice head Edward Gleeson has extensive experience in public inquiries, while Niall Michel focuses on financial and professional services regulation. Catherine Allen has expertise in judicial review and fitness to practise inquiries; Lisa Joyce is noted for her strength in information law; and senior associate Laura Rattigan specialises in judicial review.

Practice head(s):

Edward Gleeson

Other key lawyers:

Catherine Allen; Niall Michel; Lisa Joyce; Laura Rattigan; Kate Hogan


‘Because of the reliable, practical and solution-driven legal advice consistently provided, Mason Hayes & Curran are always our first point of call when requiring legal advice on complex matters. Their attention to detail, thoroughness, dedication to the task at hand, and extensive knowledge of the law in the area of communication regulation is of a very high standard and greatly valued. The legal advice is communicated with clarity and certainty, and is efficiently delivered. MHC also manage the client relationship very effectively and keep you up to date on all developments in the case. These key capabilities set MHC apart from their competitors.’

‘Lisa Joyce is a standout legal adviser with expert insight into communications regulation matters and with the ability to understand the client’s strategic objectives while providing succinct legal certainty in her advice, and then distilling these complex legal matters into easily understandable information for the client. Lisa not only acts on the client’s instructions but actively looks to add further value by ensuring that the client has thought through all potential related issues prior to final advice. These competencies are highly valued and they set Lisa apart from her peers.’

‘A number of experts in Freedom of Information/Access to Information about the Environment are available. They have in-depth knowledge of the legislation, the ability to provide specific training, give very fast responses to queries, as I work to very strict deadlines, and strong legal advice. A one-stop shop for all my needs.’

‘Very professional approach. Always respond very quickly to our queries and keep us informed on progress throughout the process. Strong communication skills. Lisa Joyce and Catherine Allen are standouts.

‘MHC have the expertise and are practical in their dealings. They show versatility and flexibility with their clients.’

‘ I have found the solicitors and partners in Mason Hayes and Curran that I deal with very collaborative, with a great breadth and depth of knowledge and experience in public sector practice. They always take the time to understand the client’s needs while at the same time providing the required advice and assistance to the deadlines necessary.’

‘In addition to her encyclopaedic knowledge of public sector law, Catherine Allen provides advice that is strategic and cognisant of the practicalities of public sector work. Catherine is the consummate professional. She is a pleasure to deal with.’

‘Edward Gleeson’s advice is carefully provided and nothing is left to chance. Edward is incredibly detailed and has a very wide range of experience. We feel very confident to act on his advice. Edward is a most competent and professional lawyer.’

Key clients

Sustainable Energy Authority of Ireland

Nursing and Midwifery Board of Ireland

Arthropharm (Europe) Limited

David Tynan, Assessor appointed by the Minister for Finance

Health Insurance Authority

Health and Safety Authority

Environmental Protection Agency


Commission for Communications Regulation

Commission for the Regulation of Utilities

Commission for Aviation Regulation

Regulator of the National Lottery

Inland Fisheries Ireland

Sea Fisheries Protection Authority

Child and Family Agency

Housing Agency Ireland

Solicitors Disciplinary Tribunal

Department of Communications Climate Action and Environment

National Museum of Ireland

Roman Catholic Archdiocese of Dublin

St Patrick’s Mental Health Services

Electricity Supply Board

Medical Council

Veterinary Council of Ireland

Ulster Bank Ireland DAC

Real estate Tier 1

Mason Hayes & Curran LLP's real estate practice spans the full gamut of matters in this area, ranging from the financing and acquisition of portfolios to pre-construction agreement for leases. The team is particularly involved in acting for financial institutions, such as REITs, on acquisitions, disposals and leases. The 'impressiveVanessa Byrne and Michael Doran, who 'has a superb grasp of real estate legislation', are the practice heads. Jamie Fitzmaurice, Tom Davy, and Oliver Fitzgerald are all also well regarded.

Practice head(s):

Vanessa Byrne; Michael Doran

Other key lawyers:

Jamie Fitzmaurice; Tom Davy; Oliver Fitzgerald


‘Not only are the MHC Real Estate Team experts in their specialist areas, they are commercially minded and very practical. They also have exceptional service levels and turn around times.’

‘Vanessa Byrne’s skills as lead partner are impressive. Her availability, ability to ensure the work is done at the right level and ensuring work outputs (both complex and routine) are delivered within often tight timeframes is commendable.’

‘Jamie Fitzmaurice is always available for any query. Always provides value added service – doesn’t shy away from commercial and practical advice’

‘Michael Doran has a superb grasp of real estate legislation and brings a pragmatic and commercial approach to every brief he works on. He has a very strong understanding of client needs and demonstrates this time and time again.’

‘We found the team fully listened to our instructions and guided us with their industry and market expertise while bearing these instructions in mind. That has not been our experience with many firms. Very strong technical skills and an ability to relay complex legal and technical concepts in a clear & relatable manner.’

‘Excellent interpersonal skills from all team members – they were very down to earth, respectful of us their clients and other third parties involved and this demonstration of integrity and respect resulted in a very positive professional experience. Oliver Fitzgerald, the partner involved, was extremely diligent, responsive and truly felt like a trusted advisor who was working in the best interest of his clients. Associate Paul Bassett provided very timely and easily digestible advice. ’

‘Jamie Fitzmaurice has supported a number of real estate transactions for our company this year and has been a pleasure to deal with. He is available at all times, and very much focused on what is important to our organisation, he makes decisions easy to digest, a very pragmatic approach, with a focus on speed to execution.

‘Oliver Fitzgerald is the partner I deal with. I have a great working relationship with Oliver. He is readily available by phone or email and has provided an excellent service to date. ’

Key clients


Irish Life Assurance plc


Kennedy Wilson

Irish Residential Properties REIT plc

Aviva Real Estate Investors

Abu Dhabi Investment Authority


Permanent tsb

Chartered Land

Telecoms Tier 1

Mason Hayes & Curran LLP stands out for its expertise in advising Irish state entities on complex matters, such as the procurement of high-profile telecoms projects, spectrum auctions, and the drafting and enforcement of regulations. The team also acts for some of the most prominent companies in the telecoms sector, assisting them on compliance with EU and Irish regulations as well as handling corporate transactions involving telecoms companies. Practice head Michael Madden and Edel Hartog are key names. Senior associate Gráinne Morrissey  is also noted for her experience in telecoms and has recently completed a ten-month secondment at ComReg, the Irish communications regulator.

Practice head(s):

Michael Madden

Other key lawyers:

Edel Hartog; Gráinne Morrissey; Frank Flanagan


‘The core team at Mason Hayes & Curran, Michael Madden and Frank Flanagan, have advised on the key radio spectrum awards and other radio spectrum related matters in Ireland for the previous 10+ years and have, therefore, developed a tremendous breadth of experience and expertise on such matters.’

‘Having worked closely and extremely well with us over many years, the MH+C team have a great understanding of not only the regulatory framework, but our internal processes, and their advice and assistance continue to reflect this understanding. For example, the MH+C team is highly accessible, pragmatic and solutions-focused in their delivery of services and readily appreciate and respond to the tight time pressures we are constantly under (both internal and external).’

‘Another key aspect is that the key members bring quite different but, importantly, highly complementary experience, expertise and perspectives in their advice and assistance. Similarly, they are quick to bring in additional and varied expertise should the need arise. The sheer exposure of the MH+C team, and hard-earned contextual understanding, would be extremely difficult to find in another Irish firm.’

‘Michael and Frank bring quite different but, importantly, highly complementary experience, expertise and perspectives to the table. In particular, given his previous experience at ComReg and his competition/regulatory law practice, Michael readily understands our objectives and perspective, contributes extremely well to nuanced policy discussions (especially involving the commercial perspectives of the industry, economic analysis and competition law), and provides a highly accessible, engaging, responsive and no-nonsense primary point of contact between our teams.’

‘Michael Madden is an experienced partner but with prior experiences working in a regulatory environment as an economist. Frank Flanagan, also an experienced partner has a background in more technical matters; together they provide excellent balance. To boot, both gentlemen are personable, open and honest in their advice, very approachable and most importantly very aware of our role and the challenges that we face.’

‘Strong industry knowledge of telecoms, sectorial regulation, Govt and EU policy implications and state aid implications. Breadth of experience of having worked with/advised directly both sectorial regulator and government. ’

‘Highly knowledgeable and flexible team of partners and associates, where the main partners I dealt with were Edel Hartog and Michael Madden in terms of wholesale telecoms regulation and state aid (with specific on State Aid guidelines for broadband deployment).’

‘They are very responsive to inquiries and respond quickly. They are creative and provide good advice that is not overly “lawyerly” and does not overplay the regulatory risk. ’

‘Very nice people to work with, particularly Edel Hartog.’

Key clients

Commission for Communications Regulation

Department of Communications, Climate Action and Environment

BT Ireland

Virgin Media





Genesys Telecommunications

Tata Communications

Sprint Corporation

IP Telecom


White-collar crime Tier 1

Mason Hayes & Curran LLP's white-collar crime practice is involved in a range of complex matters in the space. The firm's client base includes technology companies, local authorities and charities. The group is frequently involved in the burgeoning areas of breaches of data privacy law and violations of court orders on social media sites. Liam Guidera  heads the practice, which includes recently promoted partner Shane Reynolds. Colin Monaghan specialises in litigation involving financial institutions and Peter Johnston and senior associate Conor O’Leary are other names to note.

Practice head(s):

Liam Guidera

Other key lawyers:

Colin Monaghan; Peter Johnston; Muireann Dennehy; Conor O’Leary; Shane Reynolds


‘Excellent client focus – they listen to fully understand before responding. Excellent capability in Investigations & White Collar Crime and understanding of the Irish market and regulation.’

‘Muireann Dennehy has expertise in dealing with criminal and regulatory authorities, is widely networked and an excellent speaker. Liam Guidera offers expertise in commercial matters and arbitration; he is a polished professional for mediation.’

‘The MHC team is particularly strong in relation to data protection related investigations/inquiries.’

‘The team has a wide base of relevant experience and expertise which allows clients to benefit from practical, dependable and appropriate advice. ’

‘Liam Guidera provides exceptional client service. He is imperturbable in the face of unexpected issues and his calm, sage advice is incredibly reassuring for clients. ’

‘The white-collar crime team at MHC comprises a group of people with immense personal experience expertise in the field, combined with an unrivalled attention to detail. In addition, the partners and associates at MHC are available, accessible and invariably helpful. The team manages to provide the Grade A standard of service that one would expect from a firm of its calibre, grappling with complicated points of law and mastering the challenges posed by them.’

‘Liam Guidera is an outstanding solicitor who gives his clients the best possible service. Liam has accumulated immense experience in the sphere of white-collar crime developed from his vast professional experience of litigation in the Irish courts, of tribunals, commissions of inquiry, investigations and regulatory bodies. He is recognised across the industry as one of the very best in the business. Conor O’Leary is a first-class solicitor who is fast developing a reputation as one of the rising stars in the area of white-collar crime. He is invariably reliable, unflappable, and rapidly gets to the heart of complex issues.’

‘In-depth knowledge and experience of the investigation and regulatory process. Tenacious in representing clients. Excellent backup from the firm’s multi-disciplinary team.’

‘Liam Guidera is vastly experienced with an exceptional sense of judgement. ’

‘MHC have a market leading specialist team with in-depth knowledge of white-collar and regulatory matters, leaving the firm well placed to advise on complex multi-faceted and multi-jurisdictional matters.’

‘Muireann Dennehy brings significant specialist international expertise to the team, with an impressive cv acting for large multi-nationals in complex cases. Liam Guidera is a seriously experienced practitioner with experience in all forms of investigations and litigation, including Tribunals of inquiry. An astute lawyer who brings calmness and clarity of approach to even the most complex of problems.’

‘Understanding the issues in a very complicated sector ’

‘Shane Reynolds has very quickly developed an in depth knowledge of the extensive regulatory environment in which we work and an understanding of the issues involved.’

Key clients

Facebook Ireland Limited

Various Local Authorities

International Transport Workers’ Federation (ITF)

State Prosecution Agencies, across multiple disciplinary sectors and industries

L. Behan Aggregates and Recycling Limited

Central Bank of Ireland

Trinity College Dublin

Allied Irish Banks plc

Bank of Ireland

KBC Bank

Catholic Archdiocese of Dublin

National Museum of Ireland

Health Service Executive

Gas Networks Ireland

Commission for Regulation of Utilities

Child and Family Agency (TUSLA)

Trioplast SAS Limited

Asset finance Tier 2

Newly appointed firm chair Christine O’Donovan leads the team at Mason Hayes & Curran LLP, which is experienced in advising major commercial airlines, aircraft leasing companies, banks and private equity funders on aviation finance matters, as well as a particularly strong roster of export credit agencies. Key areas of expertise include cross-border leasing and financing transactions, ABS, joint ventures, restructurings, and aircraft sales and portfolio trading. Financial services partner Barry Walsh also assists with secured financing transactions.

Practice head(s):

Christine O’Donovan

Other key lawyers:

Barry Walsh; Joseph Maxwell

Key clients

Airbus Financial Services and affiliates including ATR

Airbus Helicopters


Euler Hermes

Export Development Canada

US EXIM – Export Import Bank of the USA

J.A. Mitsui (Japan)

KV Aviation Group (UK & Australia)

Montrose Global Aircraft Leasing Limited (UK)


Willis Lease Finance Corporation

UK Export Finance

Vallair Solutions SARL

Investment funds Tier 2

Mason Hayes & Curran LLP recently expanded its 'exceptionally knowledgeable and integrated' funds team with the arrival of Sara O’Reilly, who joined from Sanlam Asset Management in November 2020. The team has notable expertise in advising on the structuring and formation of UCITS funds and on the acquisition of fund managers. Clients include international asset management companies and real estate, private equity and venture capital funds and investors. Conor Durkin, who is experienced in the structuring of UCITS and real estate funds, and regulatory specialist Rowena Fitzgerald lead the team, which also includes experienced senior associate Sarah Cloonan.

Practice head(s):

Conor Durkin; Rowena Fitzgerald

Other key lawyers:

Sarah Cloonan; Sara O’Reilly


‘Mason Hayes & Curran’s investment funds practice is able to advise on complex types of investment fund structuring. The formation of alternative investment funds requires expertise from a number of different practice areas, and as one of Ireland’s largest law firms MHC has the scale to provide this and to deliver a seamless end-to-end service for clients. The practice is also comprised of individuals who have many years of transactional experience as well as experience of working on regulatory bodies and in-house, and this mix of experience provides clients with a broader perspective and insight.’

‘Conor Durkin has deep expertise in the formation and structuring of investment funds. What stands out in our experience in dealing with Conor is the hands-on attention he gives to clients and the experience he has gained from many years in practice. Conor is also a non-executive director of a large UCITS management company, which means he has a deeper understanding of clients’ organisational structures and a broader focus on the commercial and operational environment in which fund managers operate.’

‘Very knowledgeable, very hands-on experience of market practice, always available and give to-the-point advice.’

‘Rowena Fitzgerald was extremely professional, always available, solution oriented and very knowledgeable, so we were really comfortable with the advice throughout the transaction. She was always on top of things.’

‘Excellent communication skills. Always available. Good quality of work. Ability to respond to multiple queries quickly.’

‘Conor Durkin is always very helpful and always available to provide some guidance.’

‘The team is exceptionally knowledgeable and integrated. Opinions on a variety of issues are consolidated and delivered rapidly.’

Key clients

FAM Series UCITS ICAV – FAM Smart Factors Funds

Cashel Compliance Bidco Limited (Cashel)

Hauck & Aufhäuser



Valpre Capital Limited

FAM Series UCITS ICAV – Jupiter Flexible Income FAM Fund

FAM Evolution ICAV

Opus Fund Services (IRE-Admin) Limited (Opus)

Vermeer Investment Management Limited

FAM Series UCITS ICAV – Infusive Consumer Alpha Global Leaders FAM Fund

Projects and PPP Tier 2

Mason Hayes & Curran LLP's team advises on projects including commercial developments and renewable energy, as well as acting for state bodies on project procurement. The team's clients also include lenders, project sponsors, contractors, and developers. William Carmody is a banking specialist, acting for lenders and borrowers; he heads the practice together with Rory Kirrane SC, who has a particular focus on the energy sector. Construction partners Shane Dolan and Eoin Cassidy, who is particularly active in renewable energy, are also key contacts in the team, as is David Gunn, who was a new arrival from Beauchamps in 2020.

Practice head(s):

Rory Kirrane SC; William Carmody

Other key lawyers:

Shane Dolan; Eoin Cassidy; David Gunn; Anne McCarthy

Key clients

BAM Civil Limited

Department of Communications, Climate Action & Environment

Norddeutsche Landesbank Girozentrale

Allied Irish Banks p.l.c.

NTR plc

Hines Real Estate Ireland

Irish Life Assurance / Irish Life Investment Managers

SSC Property ICAV

Lou Investments

Tax Tier 2

Highlighted for its 'subject matter excellence', Mason Hayes & Curran LLP advises on the tax elements of M&A and structured finance transactions, group reorganisations, and IP onshoring projects. The team is particularly experienced in advising technology, pharmaceutical, financial services and energy sector clients, and in assisting multinationals with the tax issues relating to establishing operations in Ireland. Niamh Caffrey, who has significant expertise in real estate tax and cross-border transactions, leads the team with Niamh Keogh, who is experienced in inward investment. Senior associate Eilís Griffin is also recommended.

Practice head(s):

Niamh Caffrey; Niamh Keogh

Other key lawyers:

Eilís Griffin


‘I was very impressed by Mason Hayes & Curran in general and by their levels of client service and partner-led delivery. I expect subject matter excellence but what most impressed me was their commitment, perseverance and practical advice. Niamh Keogh provided commercial, risk-based advice crucial to the success of the transaction we were working on.’

‘Eilís Griffin is a very capable and experienced adviser and admirably supported us on diligence and structuring. Both she and Niamh Keogh were charming and had excellent client skills.’

‘Niamh Caffrey is very competent, easy to deal with, diligent and cooperative. She understands the global picture of the transaction and the constraints from foreign jurisdictions and always focuses on finding a pragmatic solution to make the deal go through.

‘We have found the MHC team to have great tax expertise in the area of financial services and they are very proactive at maintaining senior government relationships so that complex questions and issues can be addressed very quickly.’

‘Niamh Caffrey is the best tax lawyer that we have worked with when it comes to explaining complex tax law and developing a plan on how we can adapt our business model to ensure compliance with her advice.’

‘One of the team’s key strengths is their responsiveness and their ability to quickly provide input on ad hoc tax questions. Niamh Caffrey and Niamh Keogh have been particularly helpful in a large number of projects.’

‘This team respond swiftly. This more than anything else is vital for in-house counsel. Niamh Caffrey always goes above and beyond to assist her clients. No matter what Niamh has on, she will always respond to let you know when she can get back to you to give you a practical steer on what steps to take. This is invaluable.’

Niamh Keogh is an excellent tax specialist. She is very user-friendly, knowledgeable and cuts to the heart of the issue.’

Key clients

Flexfunds Ltd

Kennedy Wilson

Appian Investments Limited

Hauck & Aufhäuser Privatbankiers AG

Capital markets Tier 3

Mason Hayes & Curran LLP has a strong track record in ECM matters as well as a growing DCM practice, led by Daragh O’Shea, which has substantial experience advising on the establishment of medium-term note programmes and debt issuances. Justin McKenna heads the ECM practice, which acts for a number of Irish-listed companies.

Practice head(s):

Justin McKenna; Daragh O’Shea

Other key lawyers:

David Mangan; Marc Wilkinson


‘Excellent and pragmatic legal support. This firm will go beyond the call of duty!’

‘Justin McKenna is pragmatic, effective and personable. He gets the deal done.’

Key clients


Apex Corporate Trustees (UK) Limited

Convexity Capital Partners

Transport Tier 3

Mason Hayes & Curran LLP acts for a range of public and private sector transport clients, with particular expertise in advising airlines and aircraft lessors on aviation finance and leasing transactions. The team also handles contentious and regulatory matters in the transport sector, including recent judicial review proceedings relating to passenger compensation. Christine O’Donovan is highly regarded for aviation finance, while Rory Kirrane SC leads the maritime practice.

Practice head(s):

Christine O’Donovan; Rory Kirrane SC

Other key lawyers:

Barry Walsh

Key clients

Aer Lingus

Commission for Aviation Regulation

DB Schenker

Dublin Airport Authority

Dublin City Council

Dublin Port Company

Evergreen Shipping

Irish Aviation Authority


The firm: As legal and regulatory responsibilities become more complex, progressive organisations need the right advice to help realise their ambitions. The expertise Mason Hayes & Curran LLP brings is rooted in unrivalled knowledge of the industries in which its clients operate, so advice is always set in its commercial context. Mason Hayes & Curran LLP empowers its international and domestic clients by giving focused recommendations and a clear understanding of their options. The firm solves the issues clients face today and anticipates the challenges of tomorrow.

Mason Hayes & Curran LLP is a business law firm with over 95 partners. These partners understand the challenges international organisations face when investing or locating in a foreign country; assisting them during initial establishment and in meeting their ongoing legal and commercial imperatives. The firm has offices in London, New York and San Francisco, three important conduits for inward investment to Ireland.

Areas of practice
Corporate: The firm’s corporate lawyers are recognised as the leading advisers on all types of domestic and international corporate transactions across a broad range of industry sectors. They have acted in some of the most high profile, innovative and complex M&A deals in Ireland. With extensive experience in all types of corporate transactions, they combine transactional skills with specialist expertise in banking, property, competition, employment and tax.

Contact: David O’Donnell

Dispute resolution and commercial litigation: The dispute resolution team is routinely involved in complex, high profile commercial court litigation.
The team is frequently retained by international clients on multi-jurisdictional disputes which involve providing strategic guidance driven by the different systems of rules and practices worldwide.

Contact: Maurice Phelan

Employment and benefits: The firm’s combined experience offers a unique
understanding of the challenges faced by employers in all sectors and industries. It provides a tailored approach to meet the individual needs of each client. The team empowers employers to confidently make the right decisions. Employers rely on its comprehensive and integrated service offering. The firm provides commercial and strategic advice on all workplace issues from recruitment to retirement.

Contact: Melanie Crowley

Financial services and banking: The financial services team provides high calibre advice to domestic and international clients. It regularly advises on international corporate lending, renewable energy, acquisition, asset and structured finance, debt capital markets, investment funds and regulation. Clients include leading domestic and international banks and insurers operating in

Contact: William Carmody

Projects and energy: Energy sector clients know the firm for its work on complex transactional, regulatory and commercial issues. Clients include a number of Ireland’s most significant and strategically important players. It has unrivalled expertise in advising on the project finance, development and acquisition of electricity generation, both thermal and renewable.

Contact: Rory Kirrane SC

Real estate: With the largest real estate team in Ireland, the firm offers extensive expertise critical for structuring complex real estate transactions. It advises banks, state agencies, corporates, multinationals and both private equity and institutional investors on the most high profile mandates. The lawyers possess strong sectoral and industry knowledge particularly in the areas of energy, technology, health and hotels and leisure.

Contact: Vanessa Byrne

Technology: The technology team provides cutting edge advice on commercial law matters to the leading tech companies who require guidance through new and sometimes unforeseen legal circumstances. The firm advises the world’s leading social media and search organisations along with emerging startups and entrepreneurs.

Contact: Philip Nolan

Taxation: The firm’s specialist tax team comprises internationally experienced tax law partners and professionals and provides innovative and leading edge tax services to its international corporate and individual client base. Its service offering is focused on companies and individuals using Ireland as part of their global tax management strategy.

Contact: Niamh Keogh

Department Name Email Telephone
Aviation, International Asset Finance Christine O'Donovan
Banking & Financial Services William Carmody
Dispute Resolution Maurice Phelan
Real Estate Michael Doran
Real Estate Vanessa Byrne
Construction Rory Kirrane SC
Energy & Natural Resources Eoin Cassidy
Technology Philip Nolan
Corporate / M&A David O'Donnell
Competition & Antitrust Niall Collins
Intellectual Property Gerard Kelly
Employment & Benefits Melanie Crowley
Tax Niamh Keogh
Photo Name Position Profile
Ms Jenny Ahern  photo Ms Jenny Ahern Jenny is a partner in the Financial Services team at Mason Hayes…
Ms Catherine Allen  photo Ms Catherine Allen Catherine is a public and information law specialist, recognised as a leader…
Mr Declan Black  photo Mr Declan Black Declan is the managing partner of Mason Hayes & Curran LLP. His…
Mr Liam Brazil  photo Mr Liam Brazil Liam is a partner on the Corporate team at Mason Hayes &…
Ms Susan Bryson  photo Ms Susan Bryson Susan is a partner in the Contruction team at Mason Hayes &…
Ms Vanessa Byrne  photo Ms Vanessa Byrne Vanessa is co head of the Real Estate team at Mason Hayes…
Ms Niamh Callaghan  photo Ms Niamh Callaghan Niamh is a Partner in our Corporate team where she advises charities, social…
 William Carmody photo William Carmody William is the Head of the Financial Services team at Mason Hayes…
Ms Rachel Carney  photo Ms Rachel Carney Rachel is a partner in our Real Estate team and leads our specialised Residential…
Mr Eoin Cassidy  photo Mr Eoin Cassidy Eoin is a partner in the Construction Infrastructure and Utilities department and…
Mr Niall Collins  photo Mr Niall Collins Niall is a partner and Head of the Competition & Antitrust team…
Mr Ger Connolly  photo Mr Ger Connolly Ger is a partner in Mason Hayes & Curran’s Employment Law &…
Ms Melanie Crowley  photo Ms Melanie Crowley Melanie is a partner and head of the Employment Law & Benefits…
Mr Tom Davy  photo Mr Tom Davy Tom is a Real Estate partner and advises institutions, investors, banks, asset…
Mr Michael Doran  photo Mr Michael Doran Michael is co-head of the real estate team at Mason Hayes &…
Mr Conor Durkin  photo Mr Conor Durkin Conor is a partner in the Financial Services team at MHC and…
Mr Paul Egan  photo Mr Paul Egan Paul is a Senior Counsel and is a former Chair of the…
Ms Rowena Fitzgerald  photo Ms Rowena Fitzgerald Rowena is a partner in the financial services team specialising in investment…
Mr Stephen Gillick  photo Mr Stephen Gillick Stephen is a Partner and Head of Pensions in the Employment Law…
Ms Ailbhe Gilvarry  photo Ms Ailbhe Gilvarry Ailbhe is Partner in the Insurance & Risk team at MHC, advising…
Mr Edward Gleeson  photo Mr Edward Gleeson Edward is a partner in Mason Hayes & Curran’s Litigation team and…
Mr Liam Guidera  photo Mr Liam Guidera Liam is a partner in Mason Hayes & Curran’s Dispute Resolution team,…
Mr Jason Harte  photo Mr Jason Harte
Ms Edel Hartog photo Ms Edel Hartog Partner, Commercial
Ms Wendy Hederman  photo Ms Wendy Hederman Wendy is a partner in Mason Hayes & Curran’s Commercial team. Wendy works…
Mr Brian Horkan  photo Mr Brian Horkan Brian is a partner in Mason Hayes & Curran’s Dispute Resolution team with…
Ms Peggy Hughes  photo Ms Peggy Hughes
Ms Rachel Kavanagh  photo Ms Rachel Kavanagh Rachel is Head of the Insurance & Risk team at Mason Hayes…
Mr Martin Kelleher  photo Mr Martin Kelleher Martin is a partner in the Corporate team and head of Life…
Mr Gerard Kelly  photo Mr Gerard Kelly Gerard is head of the Intellectual Property team at Mason Hayes &…
Mr Rory Kirrane  photo Mr Rory Kirrane Rory is a partner and head of the Construction Infrastructure and Utilities…
Ms Claire Lord  photo Ms Claire Lord Claire is a Corporate Partner and Head of Mason Hayes & Curran’s…
Mr Robert McDonagh  photo Mr Robert McDonagh Robert is a partner in the commercial team at Mason Hayes &…
Mr Justin McKenna  photo Mr Justin McKenna Justin is a partner in MHC’s Corporate team, specialising in corporate finance,…
Mr Peter McLay  photo Mr Peter McLay Peter is a Partner in our Construction, Infrastructure & Utilities practice and…
Mr Niall Michel  photo Mr Niall Michel Niall is a litigation partner in the Public, Regulatory & Investigations team…
Mr Colin Monaghan photo Mr Colin Monaghan Partner, Dispute Resolution
Mr Ronnie Neville  photo Mr Ronnie Neville Ronnie is a partner in the Employment Law and Benefits team, advising…
Mr Philip Nolan  photo Mr Philip Nolan Philip is a partner, head of the Commercial team and a member…
Mr David O'Donnell photo Mr David O'Donnell David is a partner and head of MHC’s Corporate team, practicing in…
Ms Christine O'Donovan photo Ms Christine O'Donovan Christine is the current Chair of Mason Hayes & Curran LLP. Christine…
Mr Frank O'Flynn photo Mr Frank O'Flynn Frank is a partner in Mason Hayes & Curran’s Corporate team. His corporate practice…
Mr Ian O'Herlihy photo Mr Ian O'Herlihy Ian is a partner in the Employment & Benefits team and is…
Mr Maurice Phelan  photo Mr Maurice Phelan Maurice is a partner and Head of Dispute Resolution at Mason Hayes…
Mr Kevin Power  photo Mr Kevin Power Kevin leads the Healthcare and Medical Law team at Mason Hayes &…
Ms Judith Riordan  photo Ms Judith Riordan Judith Riordan primarily advises on insolvency and restructuring matters, together with all…
Mr Liam Riordan  photo Mr Liam Riordan Liam is a partner in Mason Hayes & Curran’s Employment Law and…
Ms Elizabeth Ryan  photo Ms Elizabeth Ryan Elizabeth (‘Liz’) is a partner in the Employment & Benefits team. She…
 Oisín Tobin  photo Oisín Tobin Oisín is a Partner affiliated in Mason Hayes & Curran’s technology, media…
Number of fee-earners : 280
Contact : Declan Black (managing partner)
Other offices : London
Other offices : New York
Other offices : San Francisco

Mason Hayes & Curran’s Approach to Diversity and Inclusion

What is Diversity at MHC?

Diversity means the differences between us, including our perspectives, life experiences, social and cultural backgrounds.

What is Inclusion at MHC?

Inclusion is acceptance, understanding and respect for these differences. We recognise and we value that each staff member is unique and brings a different perspective to the firm.  All employees have a role to play in embracing this culture.

Our Goals

  • To acknowledge and encourage diversity and inclusion within the firm
  • To welcome and respect individual views and experience for the benefit of colleagues and clients
  • To recognise and formalise our existing culture of openness and inclusivity=

Culture & Background
We are focused on creating a firm where race, religion, ethnicity, experience and culture are appreciated for the diverse perspectives they bring.

We strive to create and sustain a truly equal and gender balanced firm with equal opportunities and treatment for all.

We understand that disability includes both physical and mental health and we actively provide support to those who need it.

We encourage all staff to simply be themselves irrespective of gender or sexual orientation.

We recognise and understand that our people have responsibilities to their partners, parents, siblings and children.