Dr. Christopher Mc Mahon

Adjunct Assistant Professor, Law

Biography

Dr Christopher McMahon is a barrister with a civil practice focusing on commercial and public law at the Law Library, Dublin and is an Adjunct Assistant Professor at the School of Law.

He leads a dissertation group on the LLM on Current Issues in European Privacy Law and has previously taught a range of subjects to undergraduate and postgraduate students, including EU State aid law, the Law of Evidence and Equity. He holds degrees from Trinity College Dublin and the University of Oxford, including a doctorate on EU State aid law, and has published widely on that subject.

He also teaches Administrative Law at the Honorable Society of King's Inns and previously served as Special Adviser to the Attorney General.

Publications and Further Research Outputs

Peer-Reviewed Publications
Non-Peer-Reviewed Publications

Christopher McMahon and Alan Eustace, Nothing to Lose but Their Restraints of Trade: Lessons for Employment Non-Compete Clauses from EU Competition Law, Industrial Law Journal, 2022Journal Article, 2022, DOI , URL
Christopher McMahon, Sporting Organisations on Thin Ice: Speed Skating, Arbitration and the Competition Rules (T-93/18 International Skating Union), European competition and regulatory law review, 2021Journal Article, 2021, DOI
C. McMahon, State Aid Junkies, Viruses and the Aviation Industry:, European State Aid Law Quarterly, 20, (2), 2021, p249--257Journal Article, 2021, DOI
C. McMahon, The Relationship between Economic Advantage and the Compatibility Assessment in Decisions Not to Raise Objections · Case T-578/17 a&o hostel and hotel Berlin GmbH v Commission (Jugendherberge Berlin) · Annotation by Christopher McMahon, European State Aid Law Quarterly, 20, (3), 2021, p427--433Journal Article, 2021, DOI
Christopher McMahon, Country Report - Ireland, European State Aid Law Quarterly, 22, (4), 2023, p427 - 430Journal Article, 2023
Christopher McMahon, No Further Assistance to the Court: The Distinction Between Legal Advice and Legal Assistance in the Irish Law on Legal Professional Privilege, Dublin University Law Journal, 43, (1), 2024Journal Article, 2024
National Report - Ireland in, editor(s)Alexander Kornezov , Mutual Trust, Mutual Recognition and the Rule of Law, Sofia, Bulgaria, Federation internationale pour le droit européen [International Federation for European Law], 2023, pp416 - 423, [Hilary Hogan, Christopher McMahon, Alan Eustace]Book Chapter, 2023
National Report - Ireland in, editor(s)Alexander Kornezov , Mutual Trust, Mutual Recognition and the Rule of Law - XXX FIDE CONGRESS 2023 Volume 1, Sofia, Bulgaria, Federation internationale pour le droit européen [International Federation for European Law], 2023, pp416 - 423, [Hilary Hogan, Christopher McMahon, Alan Eustace]Book Chapter, 2023
Christopher McMahon, Keeping an autonomous principle at arm's length: Fiat Chrysler Finance Europe and Ireland v Commission, Common Market Law Review, 60, (4), 2023, p1153 - 1168Journal Article, 2023
Christopher McMahon, `Unseating the "Supreme Inspector of Taxes" for the European Union: Luxembourg and Engie v Commission (C-451/21 P and C-454/21 P) EU:C:2023:948, European Law Review, 49, (3), 2024, p294 - 305Journal Article, 2024
Christopher McMahon, Selectivity as discrimination: lessons from the case law on fiscal measures for identifying State aid, Yearbook of European Law, 43, 2024, p261 - 296Journal Article, 2024, URL
Christopher McMahon, Economic Effects and EU State Aid Control: Recalibrating the Impact Standards for the Identification of Aid in Article 107(1) TFEU, Journal of Competition Law & Economics, 21, 2025Journal Article, 2025, URL
Christopher McMahon, Judgment by Formula: Regulatory Form and the Differentiation of Fiscal Measures and Non-Fiscal Measures in EU State Aid Law, European State Aid Law Quarterly, 23, (1), 2024, p4 - 14Journal Article, 2024, DOI
Christopher McMahon, Country Report - Ireland, European State Aid Law Quarterly, 24, (1), 2025, p88 - 90Journal Article, 2025, DOI
Christopher McMahon, Country Report - Ireland, European State Aid Law Quarterly, 24, (3), 2025, p303 - 306Journal Article, 2025, DOI
Christopher McMahon, The Limits of Incremental Reform in Civil Procedure: Kirwan v Connors & Ors [2025] IESC 21, Irish Supreme Court Review, 8, 2026, p25 - 51Journal Article, 2026

National Report - Ireland in, editor(s)Alexander Kornezov , European Social Union - XXX FIDE CONGRESS 2023 Volume 3, Sofia, Bulgaria, Federation internationale pour le droit européen [International Federation for European Law], 2023, pp328 - 343, [Hilary Hogan, Christopher McMahon, Alan Eustace]Book Chapter
National Report - Ireland in, editor(s)Alexander Kornezov , European Social Union - XXX FIDE CONGRESS 2023 Volume 3, Sofia, Bulgaria, Federation internationale pour le droit européen [International Federation for European Law], 2023, pp328 - 343, [Hilary Hogan, Christopher McMahon, Alan Eustace]Book Chapter

EU State aid law
Competition Law
Constitutional Law
Administrative Law
Privacy Law
Data Protection
Evidence
Civil Procedure
Commercial Law

Corporations and associations law, Public law, Private law and civil obligations, Administrative law, European Union law, Civil procedure, Privacy and data rights, Commercial law, Constitutional law,

Recognition

Awards and Honours

Elected to the Scholarship., Trinity College Dublin 2016
Pump Court Tax Chambers Scholarship, University of Oxford 2018
Winter Williams Prize in European Business Regulation, University of Oxford 2019
Ronald J Hill Prize in Political Science, Trinity College Dublin 2016
Bloomsbury Professional Prize in Evidence, Trinity College Dublin 2017
Gold Medal, Trinity College Dublin 2018