John O’Leary


John is a Partner in our Commercial Litigation Team. He specialises in domestic and multi-jurisdictional contractual/tortious and shareholder disputes. 

John frequently acts for financial institutions in complex commercial disputes and he has also acted for both claimants and respondents in domestic and international commercial mediations. 

John also has extensive experience in advising clients involving funds litigation, which has included acting on behalf of two parties involved in separate Bernard Madoff related proceedings with an overall value in excess of USD$3.5bn. 


  • Commercial Litigation
  • Insolvency
  • Google+
  • LinkedIn

Areas of Expertise

Insolvency & Restructuring Dispute Resolution

Professional Memberships

Law Society of Ireland


University College Dublin, BBLS

Smurfit School of Business, MBS