Mr Grzegorz Materna > Hansberry Tomkiel > Warsaw, Poland > Lawyer Profile

Hansberry Tomkiel
01-803 WARSAW


Senior Counsel


Prof. dr Materna is a recognized and leading competition law practitioner, who headed the Polish Competition Authority’s Department of Competition Protection for six years before joining Hansberry Tomkiel. He is a solicitor and a member of the Warsaw Chamber of Legal Advisors, as well as an Associate Professor of the Institute of Law Studies of the Polish Academy of Sciences (INP PAN).

Mr Materna has invaluable knowledge and experience resulting from his direct involvement in carrying out investigatory proceedings at all levels and drafting decisions on behalf of the Chairman o the Competition Authority. Mr Materna oversaw investigations and proceedings in matters of horizontal and vertical anticompetitive agreements, cartels and abuses of dominance. He organized and participated in inspections and searches carried out by the Authority and represented it in cases before the Competition and Consumer Protection Court as well as the Court of Appeals.

Since joining Hansberry Tomkiel, Mr Materna has showed himself to be a superb practitioner and litigator, who is trusted and greatly valued by clients of the Firm. He possesses the unusual capability of combining his vast knowledge and experience in EU and Polish competition law with creative and successful approaches to the cases of our clients. Mr Materna represented clients in proceedings before the Polish Competition Authority and Electronic Communication Authority, before the Polish Courts and the EU Court of Justice. His experience also includes providing assistance to clients during the Competition Authority’s “dawn-raids”.

Mr Materna combines his practice of competition law with a passion for legal science. He wrote or collaborated on over one hundred of publications on Polish and European competition and consumer protection law, including co-writing commentaries on the Polish Competition and Consumer Protection Act and the Treaty on the Functioning of the European Union. Since 2006, Mr Materna has been associated with INP PAN, where he defended his PhD thesis and habilitation on competition law. Since 2016, he has headed the Institute’s Department of Competition Law. As an experienced lecturer and renowned expert, he leads the postgraduate competition law and consumer protection law programs organized by INP PAN.


Polish, English and Italian


Warsaw Chamber of Legal Advisors

Lawyer Rankings

Poland > Competition/antitrust

The team at boutique firm Hansberry Tomkiel is skilled in handling competition matters including matters related to cartels, illegal horizontal and vertical agreements, abuse of dominance and concentrations. The team is also experienced in litigating competition cases before courts of all instances. Sector focuses include energy, publishing, financial services, retail, media and transport. Founders Dorothy Hansberry-Bieguńska, who has expertise in cartel matters, and Małgorzata Krasnodębska-Tomkiel, who was previously at the Polish Office of Competition and Consumer Protection, lead the team. Grzegorz Materna provides additional support.

Comparative Guides

Poland: Competition Litigation July 2022 This country-specific Q&A provides an overview to Competition Litigation laws and regulations that may occur in Poland.