Professional background
I specialise in the resolution of commercial disputes and have significant experience in commercial litigation, arbitration, construction disputes, insurance disputes and property related cases.
I advise clients on a wide variety of contractual claims, shareholder disputes, specific performance litigation, judicial reviews, professional indemnity claims, planning and environmental law, injunctions, and procurement law issues.
I represent most domestic and numerous international underwriters and re-insurers. I advise some of Ireland’s most successful organisations and regularly conduct High Court and Commercial Court litigation on their behalf.
I also represent employers at the Workplace Relations Commission and The Labour Court in respect of employment related disputes.
I advise clients on health and safety risks, defend organisations & executives in respect of Health and Safety Authority inspections and prosecutions, and represent clients in respect of coroner inquests and any related civil proceedings.
I have specialist experience advising clients on cyber-crime and legal issues relating to cyber protection measures, and have also provided training in this area.In addition, I regularly advise clients in relation to technology disputes.
I aim to provide advice that is clear and concise, communicating technical concepts in a way that is easily accessible for clients.
I am a CEDR accredited mediator who regularly represents clients in mediation and also acts as a mediator.
I regularly present lectures, training and workshops, for the Insurance Institute of Ireland and its members in relation to litigation and insurance matters.
Awards & recognition
Authored pieces
The Defamation (Amendment) Act 2026: Key Changes from 1st March
What others say…
"Killian has an excellent understanding of his client's needs and develops appropriate strategies."
He has a great commercial sense and offers very clear advice. He is an excellent adviser.
Killian O’Reilly is a top class lawyer