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.