Home / People / John Barrett

John is a partner in the Corporate and M&A Group and specialises in corporate and commercial law issues for public and private companies.

John has advised on some of the largest corporate transactions in recent years, including public takeovers, reorganisations, joint ventures, mergers, acquisitions, cross-border transactions, demergers, corporate migrations and IPOs. He has particular expertise in corporate transactions in the pharmaceuticals, energy and aviation sectors, as well as corporate inversions, redomiciliations and migrations into and out of Ireland. John also provides ongoing corporate law advice to a number of NYSE listed Irish plcs.

Relevant Experience

  • Advising Allergan plc on its $63 billion merger with AbbVie
  • Advising Zoetis Inc. on its $85 million acquisition of Nexvet Biopharma plc
  • Advising Allergan plc on its $10 billion accelerated share repurchase
  • Advising Allergan plc on its proposed €150 billion merger with Pfizer Inc
  • Advising Mylan N.V. on its $27 billion offer for Perrigo Company plc
  • Advising Allergan plc on its $40 billion disposal of its generics business to Teva Pharmaceuticals
  • Advising Covidien plc on its $43 billion takeover by Medtronic plc
  • Advising Air France on the sale of Cityjet to Intro Aviation
  • Advising Hypo Real Estate on its sale of Depfa Bank plc
  • Advising Covidien plc on the $2.4 billion demerger and listing on the NYSE of Mallinckrodt plc


+353 1 920 1027

Ten Earlsfort Terrace
Dublin 2
D02 T380

  • Bachelor of Business and Legal Studies, 2004, University College Dublin (Entrance Scholar)
  • Admitted as a solicitor in Ireland, 2008
  • Member of Law Society of Ireland

“John Barrett is recommended.”
The Legal 500: Europe, Middle East & Africa, 2016

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