Lawyers in Ireland

Declan O\'Sullivan

Partner

Dechert LLP

Deirdre Barnicle

Partner

McCann FitzGerald LLP

Deirdre Barrett

Deirdre has extensive experience in commercial real estate across all asset classes and with a particular focus on data centres, offices, PRS, retail, hospitality and healthcare. Deirdre advises clients across the full spectrum of real estate transactions including forward commitments and forward funding, portfolio and single-asset acquisitions and disposals, financing, landlord and tenant, development and asset management. She has advised our most high profile domestic and international investors on the largest real estate investment, leasing and financing transactions of recent years and has also advised various Irish state and semi-state bodies and, currently, a G7 state. Deirdre has, during the course of her career, headed up one of our real estate teams, has served two terms on our partnership policy committee and holds various other firm roles including pro bono partner, member of our sustainability committee and our conflicts management committee and chair of our data centre sectoral group.

Arthur Cox LLP

Deirdre Crowley

Deirdre Crowley is a Partner in our Commercial Litigation Group, specialising in emerging technology law. Deirdre’s practice is focused on the digital economy, with a particular emphasis on Data Protection, Cyber and Artificial Intelligence. Deirdre was the holder of the prestigious EMEA WIB Data Protection and Privacy Lawyer of the Year 2023 award and was shortlisted for this award once again in 2024. She is a leading authority on GDPR and represents many clients in their dealings with the Data Protection Commission, including in relation to regulatory investigations resulting from cyber incidents, data subject access complaints and own volition inquiries. Deirdre’s practice is primarily focused on technological innovation and digitalisation related advices. She acts for many of the world’s highest profile companies, spanning across sectors ranging from social media platforms, technology, pharma, medical devices manufacturing multinational companies to government departments and regulatory bodies. Deirdre’s practice includes contentious and non-contentious work, making her a trusted advisor of many in respect of their compliance, governance and related contentious defence litigation work. Deirdre is also a partner in Matheson’s Digital Economy Group and together with specialists from our financial institutions group, competition and regulation group and our technology and innovation group, Deirdre is working with clients to deal with the wave of new regulatory compliance obligations coming from Europe in the Digital Markets, Cyber and Artificial Intelligence space. A highly sought after conference speaker, Deirdre is frequently invited to speak at key industry and academic events. Deirdre is a guest lecturer on UCC’s LLM course in Tech and Elaw and the Law Society of Ireland’s Data Protection courses. Deirdre is a voluntary member of the Crawford Art Gallery’s Law and Finance Committee. Recent areas of experience highlights include: Advising many of the world’s largest technology companies headquartered in Ireland in respect of their GDPR, cyber-security and artificial intelligence governance programmes. Drafting cyber and data protection incident response and crisis management policies and procedures, training board and leadership teams on the legal aspects of data security incidents. Representing global online platform and technology companies in regulatory inquiries, including Data Protection Inquiries. Representing clients in high stakes litigation, including procuring urgent High Court injunctive relief in cases involving the theft of commercial data and court relief for multinational companies in the context of emerging technology law. Leading and coordinating high profile cyber incident response teams, dealing with parallel reporting obligations, third party vendor management and engaging with the Data Protection Commission, An Garda Siochana, the National Cyber Security Centre, Interpol and Europol. Advising on post cyber incident commercial disputes and large-scale contentious and non-contentious data subject access complaints. Advising many leading online platforms and hosting providers in relation to their obligations under the Digital Services Act, the Online Media and Regulation Act and emerging laws governing Artificial Intelligence, ethics, compliance and governance. This includes advising on content moderation rules, content take down obligations, law enforcement response procedures, compliance, audit functions and adtech regulation. Advising on the drafting of legislation in the data protection context, including drafting legislation relevant to government departments, regulatory bodies and government authorities. Advising organisations on Data Subject Access Request complaints, particularly in the context of employment litigation, Data Protection Commission Inquiries and GDPR litigation.

Matheson LLP

Deirdre Cummins

Deirdre Cummins is Of Counsel at Arthur Cox and a member of the firm’s Pensions and Employee Benefits team, advising on all aspects of pensions law in Ireland. Deirdre is a former chair of the Association of Pension Lawyers in Ireland and a member of the Pensions Council. Deirdre specialises in pensions law and advises employers and trustees on all aspects of Irish pension arrangements both in the private and public sectors. In particular, Deirdre advises on issues arising from the ongoing management and administration of occupational pension arrangements from establishment to winding up, including regulatory compliance, trusteeship issues, drafting and scheme amendments, GDPR considerations, member communications and restructuring and liability management exercises. Deirdre also advises on all pensions aspects of corporate transactions, including share sales and asset and business transfers. Deirdre has broad experience in pensions litigation and has advised extensively on contentious matters between employers and trustees in the context of restructuring and winding-up pension schemes. Deirdre also has broad experience of advising on cross-border pension transfers and on the regulatory and compliance considerations involved in establishing an IORP in another Member State.

Arthur Cox LLP

Deirdre Dunne

Deirdre Dunne is a partner and head of Business Development at Matheson. Deirdre established the firm's office in Palo Alto, California in January 1997 where she was resident counsel for seven years. During this time she advised North American companies establishing operations and conducting business in and through Ireland. As head of Business Development at the firm, with extensive experience in practice, Deirdre leads the firm’s sales strategy. She is responsible for managing programmes to increase new business generation, support multi-jurisdictional client relationships, strategic sales planning and client relationship management. She is also responsible for client development, identifying clients' requirements and ensuring the firm meets our clients’ needs and expectations. Deirdre is a member of the Law Society of Ireland since 1990 and an associate member of the American Bar Association (ABA).

Matheson LLP

Deirdre Geraghty

Partner

A&L Goodbody LLP

Deirdre Griffin

Partner

A&L Goodbody LLP

Deirdre Kilroy

Bird & Bird

Deirdre Malone

Deirdre leads EY Law Ireland’s employment law team, bringing a wealth of experience from over 20 years advising clients. She advises global multinationals and SMEs on day-to-day people issues, workforce planning, restructuring and transactions. Deirdre often collaborates with EY’s People Advisory Service in Ireland, but also connects with the EY Global Law firm network to advise on a broad spectrum of employment law issues in the workplace, from day to day HR advisory support, risk management, transactions and workplace restructuring. Combining employment law expertise with a commercial and solution-driven focus, Deirdre is highly regarded by clients. She is a member of the Employment Law Review Group, a statutory advisory expert body charged with advising the Minster for Enterprise, Trade and Employment on the review and development of employment law in Ireland. She is also a member of the Law Society of Ireland’s Employment and Equality Committee.

EY Law Ireland

Deirdre McBennett

Partner, Banking and Finance

Byrne Wallace Shields LLP

Deirdre McIlvenna

Deirdre is a partner of Maples and Calder's Funds & Investment Management team in the Maples Group's Dublin office. She has extensive experience advising global and domestic clients on the establishment and on-going regulatory, compliance and corporate governance requirements relating to their Irish regulated investment funds, management companies, servicing operations and directors. She has a particular expertise in UCITS and ETFs with strong industry involvement across different ETF committees and working groups. In addition, Deirdre has significant experience in AIFs authorised under the Irish AIFMD regime.

Maples Group

Deirdre Munnelly

Partner

Mason Hayes & Curran LLP

Deirdre Nagle

Partner, Head of Planning and Environment Law

Mason Hayes & Curran LLP

Deirdre O\'Mahony

Deirdre is a partner in our Litigation, Dispute Resolution and Investigations Group, specialising in regulatory disputes and investigations and white collar crime. Deirdre has market leading experience advising and supporting clients through interactions with regulatory bodies and enforcement agencies in Ireland and internationally, with a particular focus on contentious financial regulatory investigations and enforcement. Deirdre has advised on complex and significant investigations (internal, regulatory, criminal and cross-border) and enforcement matters for domestic and international corporate bodies, financial institutions and senior executives and on related statutory inquiries and litigation. She is an expert in white collar crime and has over fifteen years’ experience in criminal investigation, enforcement and prosecution of corporate bodies and individuals. Deirdre is an accredited CEDR mediator.

Arthur Cox LLP

Deirdre Sheehan

Deirdre is a partner in the Real Estate Group and provides comprehensive, targeted advice to public and private sector, domestic and international clients on acquisitions and disposals of commercial property, landlord and tenant matters and property finance arrangements. She regularly provides real estate advices to our corporate, banking, and environmental and planning teams and is particularly experienced in commercial real estate investment transactions, Private Rented Sector (PRS) matters and Purpose Built Student Accommodation (PBSA) deals.

Arthur Cox LLP

Denise Dockery

Partner, Property

Lavelle Partners LLP

Denise Kirwan

Partner in the Child Care Department

Comyn Kelleher Tobin LLP

Derbhil O’Riordan

Partner, Asset Management and Investment Funds

Dillon Eustace

Dermot Casserly

Partner, Head of Employment (Ireland)

Walkers

Dermot McClean

Partner, Commercial Litigation & Dispute Resolution

Lavelle Partners LLP

Dermot McGirr

Partner

Mason Hayes & Curran LLP

Dermot Powell

Dermot’s focus includes information security, data protection, supplier management, Anti money laundering and compliance with laws and regulations relating to the practice of solicitors. Dermot worked in private practice for six years and was then a general counsel for a financial services firm for 20 years.

Matheson LLP

Diann Cannon

Partner

Flynn O'Driscoll