About Donncha O Tuama

Donncha Ó Tuama offers clients significant legal industry experience, both domestic and international. Serving a broad range of industries, he bring his years of experience, commercial judgment and attention to detail to bear in protecting his clients' interests.

Offering a cross-border perspective

Prior to joining Katten in 2018, Donncha was a senior associate at a leading Irish law firm with a focus on complex commercial litigation, international arbitration and regulatory investigation matters. Prior to that, Donncha practiced as barrister before the Irish Superior Courts in commercial law, chancery and EU law.

Donncha also is a Chartered Tax Adviser in Ireland and is experienced in advising US corporations on Irish legal, regulatory and tax matters.

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Practice Focus

  • Commercial litigation
  • White collar investigations
  • Cross-border litigation
  • EU law, Irish law, Irish tax law