Profile
Work Department
Position
Mikołaj Piaskowski co-leads the Competition and State Aid Practice Group in the Warsaw office. He has practiced in competition law, focusing on antitrust, merger control, consumer protection and State aid laws, for more than 17 years. He represents clients in numerous proceedings before the President of the Office of Competition and Consumer Protection (UOKiK), the Competition and Consumer Protection Court (SOKiK), the Court of Appeals and the European Commission.
He advises clients from various industries including pharmaceutical, FMCG, TMT, automotive, finance and energy sectors on all aspects of competition law relating to their business activity. He conducts many seminars and workshops on competition law, including workshops on practical aspects of dawn raids procedures.
Languages
Memberships
- Warsaw District Chamber of Legal Advisers - Member
Education
- King's College London (Post Graduate Studies European Competition Law) (2005)
- University of Warsaw (Post Graduate Studies European Law) (2003)
- Jagiellonian University (Law Degree) (2000)
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Testimonials
Collated independently by Legal 500 research team.
‘Strong team with wide portfolio of clients and matters.’
‘I have been working with Marcin Trepka for many years, in various scenarios, his expertise and dedication have always been invaluable for our joint work.'
‘One of the most experienced teams of consumer law.’
‘We have worked closely with Baker McKenzie Krzyżowski i Wspólnicy sp.k's Competition/Antitrust team, and their depth of expertise, responsiveness, and commercial acumen consistently stand out.'
'Compared to other firms, Baker McKenzie offers a seamless blend of legal precision and business understanding.'‘Marcin Trepka, in particular, is exceptional. His strategic thinking, clarity in communication, and ability to anticipate regulatory challenges make him a trusted advisor.’
‘Baker McKenzie’s competition law team is not just top-tier — it’s exceptional in every dimension. The team has earned its place among Poland's elite by consistently delivering strategic clarity, commercial precision, and unmatched responsiveness in the most complex and high-stakes matters.’
‘After many years in business, I can confirm that in a crowded field of competition lawyers, Marcin Trepka stands out as a benchmark of excellence — smart, strategic, and relentlessly client-focused. For businesses navigating regulatory risk, he is not just legal counsel — he is strategic partner. Also, Martyna Wurm - promoted to counsel - is very knowledgeable and pragmatic. Particularly strong in consumer law. She is smart and commercially intuitive - we really enjoy working with her.’
Key clients
- MINOVA Ekochem SA MERIDA Polska sp. z o.o. TERG S.A. KIA Polska Eltrox sp. z o.o. (formerly E-commerce Partners sp. z o.o.) and the CEO TEMU (Whaleco inc.) Garmin Poland sp. z o.o. Vinted UAB PayPal Inc. The Walt Disney Company (Benelux) BV SHELL Polska sp. z o.o. Canal+ Polska S.A. Passat Stal S.A. SNOWFLAKE INC. Jarosław Kołtun (Bruno Tassi) Kredyt Inkaso ADM International Sàrl SANDOZ Polska sp. z o.o. PKO BP SA HongShan Capital Group Lyft