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Christopher McMahon, Ph.D. Candidate, School of Law, Trinity College Dublin

Christopher McMahon

Ph.D. Candidate

c/o Law School
House 39
Trinity College, Dublin 2


Ph.D. Thesis: Changed Utterly: Conceptual Stretching and the Impact of the Tax Cases on EU State Aid Law .

Supervisor: Professor Caoimhín MacMaoláin


Christopher McMahon is a PhD candidate at the School of Law with a thesis examining the recent application of EU State aid law to fiscal measures and the effect that this has on the coherence of the State aid rules in the European treaties. Christopher studied law and political science at Trinity College Dublin and was elected to the scholarship in 2016. He graduated with a first-class LLB (Pol Sc) and gold medal in 2018. He then went on to pursue postgraduate studies at the University of Oxford funded by a scholarship, graduating from the BCL course with distinction in 2019. Christopher was called to the Bar of Ireland in 2020. He has worked as an intern at a number of different commercial law firms, as a judicial assistant, as a freelance legal researcher and as a consultant for a leading legal technology start-up company. In addition to working on his thesis, he teaches at the School of Law in Trinity as well as at University College Dublin and Griffith College.

Professional Qualifications

Barrister-at-Law – Honorable Society of King’s Inns (2020)


  • Winter Williams Prize in European Business Regulation, Faculty of Law, University of Oxford
  • Pump Court Tax Chambers Scholarship, Faculty of Law, University of Oxford, 2018
  • Gold Medal, Trinity College Dublin, 2018
  • Bloomsbury Prize in Evidence, Trinity College Dublin, 2017
  • Ronald J Hill Prize in Political Science, 2016
  • Scholar of Trinity College Dublin, 2016
  • Law School Law and Political Science Prize, Trinity College Dublin, 2014-2018
  • Entrance Exhibition, Trinity College Dublin, 2014

Research Interests

EU Law, State aid law, competition law, administrative law, constitutional law, public law, international trade law.

Education Details

  • PhD candidate, Trinity College Dublin (2020 – present)
  • Bachelor of Civil Law (BCL) – University of Oxford (2019)
  • Bachelor of Laws and Political Science (LLB (Pol Sc)) – Trinity College Dublin (2018)

Employment Details

  • Seminar Tutor (Contract Law and Evidence), School of Law, Trinity College Dublin (2019 – present)
  • Tutor in Law (EU Constitutional Law), Sutherland School of Law, University College Dublin (2020 – present)
  • Part-time Lecturer in Law (International Commercial Law), Faculty of Law, Griffith College, Dublin (2020 – present)
  • Judicial Assistant, Courts Service (2018)
  • Intern, Matheson (2017)
  • Intern, McCann FitzGerald (2017)
  • Intern, Arthur Cox (2016)


  • Christopher McMahon, ‘Statutory Reform, Judicial Interpretation and Libel Tourism – A Ticket from London to Dublin?’ (2018) 1 Tort Law and Litigation Review 29.
  • Christopher McMahon, ‘The Abortion Referendum Revisited – The Decisions in Byrne v Ireland and Jordan v Ireland’ (2018) 36(17) Irish Law Times 263.
  • Christopher McMahon, ‘The Limits of Separate Legal Personality in Ireland – Statutory Exceptions Overtaking Common Law?’ (2018) 36(16) Irish Law Times 248.
  • Christopher McMahon, ‘Turning Gold into Lead: A Reappraisal of Inferences from Silence’ (2018) 36(5) Irish Law Times 78.
  • Christopher McMahon, ‘Judicial Deference – Reassessing Political Accountability’s Pedestal in Irish Administrative Law’ (2018) 36(4) Irish Law Times 68.
  • Christopher McMahon, ‘iPromise: How Contract Theory Can Inform Regulation of Online Consumer Contracts’ (2018) 21 Trinity College Law Review 174.