Marek Martyniszyn

Senior Lecturer in Law, Queen's University Belfast

Marek's research focuses on various aspects of competition law and policy in international and transnational contexts, including the limits of extraterritorial jurisdiction and state involvement in anticompetitive practices. In broader terms, his interests lie in international economic law.

Before joining Queen's Marek was a Senior Research Fellow in the Institute for Consumer Antitrust Studies at Loyola University Chicago. He holds a PhD from University College Dublin (completed on a prestigious Ad Astra Scholarship), an LLM (with specializations in EU Economic and World Trade Law) from the Saarland University’s European Institute, and MA degrees from the Warsaw School of Economics.

Marek is a Member of the International Advisory Board of the Institute for Consumer Antitrust Studies at the Loyola University Chicago (US); an Associate Member of the Centre for Antitrust and Regulatory Studies at the Warsaw University (Poland); and a Fellow of the European Law Institute (Austria). He is also a member of a number of academic societies-- among them the Society of Legal Scholars (SLS), Academic Society for Competition Law, and Competition Law Scholars Forum. Marek has been also nominated by the Polish Competition Authority to serve as a Non-Governmental Advisor to the International Competition Network

He has taught Contract Law, EU Law (both Constitutional and Substantive/Economic), International and Comparative Competition Law, EU Competition Law, and International Trade Law.


  • –present
    Lecturer in Law, Queen's University Belfast


  • 2017
    Foreign State’s Entanglement in Anticompetitive Conduct, 40(2) World Competition 299
  • 2017
    Japanese Approaches to Extraterritoriality in Competition Law, 66(3) International and Comparative Law Quarterly 747
  • 2016
    Foreign States’ Amicus Curiae Participation in U.S. Antitrust Cases, 61(4) Antitrust Bulletin 611
  • 2016
    How High (and Far) Can You Go? On Setting Fines in Cartel Cases Involving Vertically-Integrated Undertakings and Foreign Sales, 37(3) European Competition Law Review 99
  • 2015
    Leniency (amnesty) plus: a building block or a Trojan Horse?, 3(2) Journal of Antitrust Enforcement 391
  • 2015
    On extraterritoriality and the Gazprom case, 36(7) European Competition Law Review 291
  • 2015
    Inter-Agency Evidence Sharing in Competition Law Enforcement, 19(1) International Journal of Evidence and Proof 11
  • 2014
    Legislation Blocking Antitrust Investigations and the September 2012 Russian Executive Order, 37(1) World Competition 103
  • 2012
    A Comparative Look on Foreign State Compulsion as a Defence in Antitrust Litigation, 8(2) Competition Law Review 143
  • 2012
    Export Cartels: Is it Legal to Target Your Neighbor? Analysis in Light of Recent Case Law, 15(1) Journal of International Economic Law 181

Professional Memberships

  • Society of Legal Scholars
  • Competition Law Scholars Forum
  • European Law Institue
  • Non-Govermental Advisor to the International Competition Network