LAWYER PROFILE
Marcin Kolasiński

Marcin Kolasiński

Europe 2026

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Ranked in 1 practice area

About

Provided by Kieszkowska Rutkowska Kolasiński

Practice Areas

Marcin Kolasiński is a top-ranking specialist in Competition Law in Poland. He advises corporations from various industries on competition and consumer protection, state aid and public procurement. He has represented clients before the President of the Polish National Competition Authority, the European Commission, as well as Polish and European courts.

Career

Before founding KRK law firm, Marcin Kolasiński worked for the Office of the Committee for European Integration, where he was involved in the process of implementing EU law into the Polish legal system. He then worked for the Office of Competition and Consumer Protection, where he was Deputy Director of the Competition Department. At that time, he gained experience at the European Commission’s Directorate General for Competition. He then worked for more than eight years at the Baker & McKenzie law firm, where, as a partner, head of the competition law and regulatory practice, he represented clients before the President of the OCCP, the European Commission, as well as Polish and European courts.

Professional Memberships

Marcin is a member of the Polish Competition Law Association, the Polish Association of Law and Economics and the Centre for Antitrust and Regulatory Studies. He is also a non-governmental adviser within the International Competition Network.

He is a member in the District Chamber of Legal Advisors in Warsaw.

Publications

Marcin Kolasiński is a co-author of a commentary on the Act on Competition and Consumer Protection, published by C.H. Beck (one of Poland’s best known legal publishing houses).

He is the co-author of a Polish chapter in the comparative multi-jurisdictional guide on Cartels 2022 by Chambers & Partners. He is an author of numerous publications on competition law.

Chambers Review

Provided by Chambers

Chambers European Guide

Competition/Antitrust - Poland

Band 3
Band 3

Individual Editorial

Marcin Kolasiński of Kieszkowska Rutkowska Kolasiński often defends clients in investigations into allegations of market sharing and price fixing. He has further experience assisting with competition law compliance issues and merger control filings.

Strengths

Provided by Chambers

  • Marcin Kolasiński is quick and competent, with good ideas that sometimes in an unconventional way open a whole new door that we didn't even think of.

    Competition/AntitrustChambers European Guide
  • We like his strong communication and business-oriented approach.

    Competition/AntitrustChambers European Guide
  • He is a really nice guy who is always delivering top-notch advice and is very responsive.

    Competition/AntitrustChambers European Guide

Ranked Individuals at Kieszkowska Rutkowska Kolasiński (7)

Poland

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