Ciarán Leavy

• Banking & Investment Disputes

• Commercial Disputes

• Commercial Landlord Tenant Disputes

• Contentious Probate & Estate Disputes

• Cybercrime

• Defamation

• GDPR, Data Protection & Data Breach

• Insolvency Disputes

• Insurance Disputes

• IP Disputes

• IT Disputes

• Procurement Disputes

• Product Liability

• Property & Construction Disputes

• Shareholder & Director Disputes

• Acting for financial institutions and venture capitalist funds in professional negligence cases, appointment of receivers, data protection disputes and defamation matters.

Banking & Investment Disputes

• Acted for the United States Trustee in Bankruptcy in the bankruptcy of David Drumm and successfully obtained an Order in Aid in the High Court allowing the US bankruptcy to be recognised in Ireland. This was the first application of its kind in Ireland.

• Acting for a number of investors in actions against financial advisors arising from the Dolphin Trust investment.

• Acted for financial institutions in proceedings to reverse fraudulent asset transfers.

Defamation

• Acting for individuals in a variety of Plaintiff and Defendant defamation actions.

• Acted in High Court defamation proceedings involving Meta and Google

Commercial Disputes

• Acted for large foreign multi-nationals in contractual disputes with Microsoft plc.

• Acted for an oil and gas exploration company in a high value breach of contract and misrepresentation claim.

Cryptocurrency Disputes

• Acted in a High Court cryptocurrency dispute against Coinbase plc.

Cybercrime Disputes

• Acting for individuals in actions arising from cyber security breaches.

Insurance Disputes

• Acting for companies and individuals in breach of contract/specific performance cases against insurance companies where cover has been rejected and claims unfairly denied.

Professional Negligence

• Acting for individuals in Plaintiff professional negligence cases against solicitors, accountants, financial advisors, engineers, architects and surveyors.

• Acted for a group of high-net-worth investors in a professional negligence action against a major stockbroking firm.

Probate Disputes

• Acting in contentious probate disputes on behalf of both the executors of estates and beneficiaries, including actions under S.117 of the Succession Act, 1965, promissory estoppel and undue influence cases.

• Acted for the personal representatives of an estate in injunctive proceedings restraining a party from interfering with the personal representatives in the exercise of their duties as executors of the estate under the Succession Act 1965.

• Acting in a Commercial Court multi-jurisdictional probate and trust dispute.

Property & Construction Disputes

• Acted for a property developer in a high-profile Commercial Court case against ACC Bank Plc. The High Court awarded the developer damages for losses suffered as a result of ACC losing the title deeds to certain properties. This landmark decision created new case law in respect of a mortgagee’s duty of care to a mortgagor.

• Acting for individual clients in building disputes, boundary disputes, planning disputes, nuisance actions, trespass and property damage claims.

Shareholder Disputes

• Acting for shareholders in Section 212 oppression of minority shareholder actions under the Companies Act.

• Read a recent article in The Irish Times on the successful settlement of a high-profile defamation case

• Read Ciarán’s comments in The Irish Times, on a High Court defamation case involving sexual abuse allegations

• Read Ciarán’s comments in the Irish Independent on the rights of a neighbour in relation to building works on the house next door 

• Read Ciarán’s comments in The Irish Times, on the risks of loan notes and the Dolphin Trust investment case 

• Dublin Litigation Team of the Year 2025, The Irish Law Awards

• Litigation Lawyer of the Year 2019, The Irish Law Awards

• British Irish Chamber of Commerce

• Commercial Litigation Association of Ireland

• Consulegis

• Dublin Monaghan Chamber of Commerce

• Institute of Bankers of Ireland

• Law Society of Ireland

• Marcalliance

• Media, Internet and Data Protection Bar Association

• Professional Negligence Lawyers Association

• Restructuring & Insolvency Ireland

• BCL, University College Cork

• Master of Laws in European Law (LLM), University of Limerick

• Diploma in Employment Law, Law Society

• Certificate in Technology Law, Law Society of Ireland

• Professional Certificate in Compliance, Institute of Bankers