LAWYER PROFILE
Marcin Trepka

Marcin Trepka

Europe 2026

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Ranked in 1 practice area

About

Provided by Baker McKenzie

Practice Areas

Marcin Trepka is a partner and co-leader in Warsaw office's Antitrust & Competition practice. He specializes in Polish and EU competition law as well as consumer law. He regularly represents clients before the competition authorities, Polish and EU courts of law and the Polish Supreme Court.

In addition, Marcin is active in the development of international competition law policy. He serves as the Co-Chairman of the Cartels&Leniency Task Force of the ICC Commission on Competition in Paris. He also serves as the Non-Governmental Advisor to the International Competition Network.

Marcin assists Clients with respect to the entire spectrum of competition law. He represented clients in some of the most challenging and well-known antitrust matters involving cartels (cement, chemical products to mining industry, and heat power cartel cases), antitrust litigation (lead defense counsel in one of the first private enforcement cases in Poland), or abuse of dominant market position (regarding the abuse of a dominant position on the gas markets in CEE). Marcin has also an extensive expertise in delivering complex antitrust compliance solutions, advising Clients on vertical and horizontal agreements (including distribution issues, on-line sales, cooperation between competitors, pricing and bonus policies), merger control (multijurisdictional mergers and JV), and consumer law issues (regulatory and consumer litigation). Marcin advises a wide range of Clients, including chemical, energy, insurance, media, finance and life science groups.

Professional Memberships

Warsaw Bar Association - Member

ICC Commission on Competition in Paris - Co-Chairman of the global Cartels&Leniency Task Force

ICC Commission on Competition in Poland - Vice-president

Personal

Polish Academy of Sciences (Post Graduate Diploma in Competition Law) (2012)

Lazarski University in Warsaw (Master of Arts) (2009)

Chambers Review

Provided by Chambers

Chambers European Guide

Competition/Antitrust - Poland

Band 2
Band 2

Individual Editorial

Marcin Trepka brings to bear his expertise throughout the full life-cycle of behavioural and consumer protection matters, from initial investigations to appeals and private enforcement actions.

Strengths

Provided by Chambers

  • We are very impressed, he is very hands-on and very diligent.

    Competition/AntitrustChambers European Guide
  • He has been one of the most impressive and expedient lawyers, knows how to talk to the business as well as to in-house counsel.

    Competition/AntitrustChambers European Guide
  • He is very responsive and pragmatic.

    Competition/AntitrustChambers European Guide
  • His guidance makes us feel confident in complex consumer protection matters.

    Competition/AntitrustChambers European Guide

Ranked Individuals at Baker McKenzie (249)

Austria

Belgium

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