Jarosław Sroczyński

Recognized in the Competition/Antitrust category in the Chambers Europe 2026 ranking

Warsaw Spire – the new office of Markiewicz Sroczyński Mioduszewski in Warsaw!

Jarosław Sroczyński on brand bidding: Regarding “keywords”. Are there any limits to market collusion?

Jarosław Sroczyński “Protecting Consumers in the Digital Age: AI and Dark Pattern Detection”

Conference “Consumer Protection – Challenges for the Third Decade of Consumer Ombudsmen”

23. Ranking of Law Firms 2025. Leading and Recommended Law Firm, Leading Lawyers in 2 fields

J. Sroczyński „one of the world’s leading practitioners in the WWL: Competition 2025 report”

J. Sroczyński and J. Tateno at European Economic Congress in Katowice organised by the ministry

J. Sroczyński and J. Tateno “35 years of antitrust law and the OCCP, reflections and prospects”

Recommendation in the Competition/Antitrust field – The Chambers Europe 2025 ranking

J. Sroczyński “one of the world’s leading practitioners in the WWL: Competition 2024 report”

22nd Annual Law Firm Rankings 2024 by Rzeczpospolita – a total of 7 awards for MSM Law Firm

Recommendation in the Competition/Antitrust field – The Chambers Europe 2024 ranking

Case C-255/22: J. Sroczyński at the appeal hearing on Gazprom’s liabilities before the CoJ of the EU

MSM Law Firm has been recognized in the Global Competition Review 100 2023 ranking!

Jarosław Sroczyński speaking at the 15th Congress of Competition Law organized by Business Pulse

MSM Law Firm has been recognized in the Global Competition Review 100 2024 ranking!

21. Ranking of Law Firms 2023 by Rzeczpospolita. Leading Law Firm and Leading Lawyers in 3 fields

Jarosław Sroczynski: “Proceedings before the President of the OCCP and protection of secrets”

J. Sroczyński at international conference: “The modern consumer market – sales and services”

OCCP Inspections – Legal Opinion by J. Sroczyński and Dr. M. Markiewicz on the front page

“Legal and practical aspects of protecting business secrets”. Workshop by J. Sroczyński

Markiewicz&Sroczyński GP in the Forbes Poland Best Law Firms 2023 ranking in two areas

Recommendation in the fields of Competition and Antitrust – The Chambers Europe 2023 ranking

Jarosław Sroczyński: “EU vertical regulation no. 2022/720” at the 14th Competition Law Congress

Jarosław Sroczyński on the 4th Energy Forum: “New Technologies in the Energy Crisis”

Jarosław Sroczyński: Alumni Thanksgiving 2022 at the Brussels office of Cleary Gottlieb

Recommendation in the fields of Competition and Antitrust – The Chambers Europe 2022 ranking

20. Law Firm Rankings by Rzeczpospolita 2022: Recommended Law Firm and Lawyers in 4 Practice Areas

After two years of covid break, another meeting of Cleary Gottlieb alumni in Stockholm

Compensation for the property of Polish entrepreneurs in Ukraine destroyed by the Russian aggressor

J. Sroczyński for CARS: The “passing-on” allegation as a potential defense against liability

Markiewicz & Sroczynski as the best law firm in the Forbes Best Law Firms 2022 ranking

Jarosław Sroczyński for Prawo.pl: Will the Sped-Pro verdict shake up the independance of OCCP?

Markiewicz & Sroczyński Law Firm recommended in the 2022 Global Competition Review 100 ranking

Recommendations in the field of Competition & Antitrust in the Client Choice 2021 ranking

Jarosław Sroczyński at the workshop on protection of intangible assets of the company MMC Poland

Jarosław Sroczyński: A judgement shaping the line of case-law on “shelf-fee” cases

J. Sroczyński at 3rd Energy Forum of Science and Economy: New technologies – opportunities and risks

J. Sroczyński on the panel of the 8th International Consumer Conference: Challenges for consumer law

Jarosław Sroczyński recommended at the Ranking Expert Guides Competition and Antitrust 2021

J. Sroczyński dla Global Competition Review: Warto rozważyć powołanie instytucji Monitoring Trustee

Markiewicz & Sroczyński Law Firm has been nominated for the 2021 GCR 100 ranking

Recommendation in the field of competition and antitrust law – Chambers Europe 2021 ranking

Jarosław Sroczyński Named Global Leader in the Who’s Who Legal Competition 2020 ranking

J. Sroczyński recommended as Global Leader in the Who’s Who Legal Competition 2021 Ranking

19. “Rzeczpospolita” 2021 Law Firm Rankings – Recommended law firm and Attorneys in two practice areas

18. “Rzeczpospolita” 2020 Law Firm Ranking – Recommended Law Firm in 3 Practice Areas, Lawyers in 2, 1 Leader!

J. Sroczyński for Katowice Bar: “Prohibited agreements, abuse of a dominant position, merger control”

J. Sroczyński: “Prohibited agreements, abuse of a dominant position, mergers, procedures”

J. Sroczyński: 3 decades of OCCP – The most important decisions (subjective overview)

J. Sroczyński: “Complaints, Mediation, and Other Proceedings in Consumer Matters”

Jarosław Sroczyński recommended at the Ranking Expert Guides Competition and Antitrust 2020

J. Sroczyński for GCR: Implications of the EC’s conditional approval of the PKN Orlen / Grupa LOTOS merger

J. Sroczyński for ACC: “Defining the relevant market in antitrust law, OCCP oversight”

J. Sroczyński: A Report on the History of Polish Competition Law. Oxford Noble Foundation

17th Law Firm Ranking 2019: J. Sroczyński Leads in Competition and Antitrust Law

Jarosław Sroczyński at the International Scientific Conference on security and regulation of the energy market

J. Sroczyński for Prawo.pl: “Two agencies may fine the company for a data protection violation”

J. Sroczyński attending the meeting at the Sobański palace – Economic evidence in competition law

Jarosław Sroczyński as panellist at CARS conference on unfair use of contractual advantage

J. Sroczyński: “Connection agreements in the district heating sector – competition and consumer law””

16. Ranking of Law Firms 2018 by Rzeczpospolita. Leading Lawyer and Recommended Law Firm

Jarosław Sroczyński at the National Scientific Conference on financial services

Recommendation in the fields of Competition and Antitrust – The Chambers Europe 2018 ranking

J. Sroczyński at CARS Seminar: “Challenges in trade relations in the food supply chain”

Jarosław Sroczyński at the 5th International Consumer Scientific Conference

Jarosław Sroczyński recommended at the Ranking Expert Guides Competition and Antitrust 2018

Jarosław Sroczyński recommended as „a leading Polish specialist” in Who’s Who Legal: Competition 2018

Markiewicz & Sroczyński Law Firm recommended in the 2017 Global Competition Review 100 ranking

Jarosław Sroczyński at the IXth Competition Law Congress by Puls Biznesu

Article by Jarosław Sroczyński entitled “Alternative dispute resolution in the energy sector: hopes and concerns”

Article by Jarosław Sroczyński entitled: “The law on contractual advantage: first reflections and controversies”

“In varietate concordia” Jubilee Book in honor of Professor Tadeusz Skoczny – C.H. Beck Publishing

Jarosław Sroczyński will be speaking on „The future of the legal services market – new times, new challenges”

Jarosław Sroczyński and Agnieszka Staszek speaking at the energy law workshop

Jarosław Sroczyński at ceremonial presentation of the CARS honorary aword to Prof. Anna Fornalczyk

Jarosław Sroczyński at the 2017 Cleary Gottlieb Alumnae Reunion in Malta’s capital – Valletta

Jarosław Sroczyński Participates in the Arnold & Porter Kaye Scholer Competition Law Forum

Meeting with Advocate General Maciej Szpunar. Lecture: “Private enforcement and competition law”

J. Sroczyński: Mis-selling of financial services in the context of information exchanged”

J. Sroczyński: “Out-of-court consumer disputes in the energy sector: how to comply with the new regulations?”

Jarosław Sroczyński recommended in Who’s Who Legal: Competition 2017 ranking

Recommendation in the fields of Competition and Antitrust – The Chambers Europe 2017 ranking

Markiewicz & Sroczyński GP named in the legal ranking of Polityka Insight ranking

Markiewicz & Sroczyński Law firm recived „Trusted Partner” honorary aword of Żywiec Zdrój S.A.

J. Sroczyński: “Consumer arbitration (ADR) in the energy sector: more benefits or problems?

Jarosław Sroczyński recommended lawyer in Who’s Who Legal 2016 – “competition”

Markiewicz & Sroczyński Law Firm recommended in the 2016 Global Competition Review 100 ranking

Article by Jarosław Sroczyński for the quarterly iKAR entitled “Dispute about homeopathy (or who rules the market?)”

Publication by J. Sroczyński in the post-conference book entitled “Consumer law in practice”

Jarosław Sroczyński at the 8th Competition Law Congress: “Franchising – Anything Goes”

J. Sroczyński for CARS: “Behavioral Economics as an Analytical Tool in Competition Law”

R. Markiewicz, J. Sroczyński, and MS were recommended in the 14th “Rzeczpospolita” Law Firm Ranking 2016

Nomination for Jarosław Sroczyński and Markiewicz & Sroczyński GP in the legal ranking Chambers Europe 2016

J. Sroczyński leading a workshop: “Remedies: The President of the OCCP as a market regulator?”

Jarosław Sroczyński was a speaker at the workshop „The protection of undertakings’ rights in competition law”

Comment by Jarosław Sroczyński for „Rzeczpospolita” on the introduction of the law on bank tax

J. Sroczyński and MS recommended in the 13th Legal Ranking by Rzeczpospolita 2015

Jarosław Sroczyński speaking at the workshop on consumer law in the banking sector

Jaroslaw Sroczyński and Markiewicz & Sroczyński GP in the Chambers Europe 2015 ranking

Jarosław Sroczyński named “recommended lawyer” in Who’s Who Legal 2015

J. Sroczyński for GCR: EC charges against Gazprom regarding abuse of dominant position

J. Sroczyński for Rzeczpospolita: Antitrust proceedings and a potential record fine for Google

Jarosław Sroczyński: speaker at the 1st Polish Competition Law Congress in Warsaw

“Aspects of Compliance with Energy Law: Illegal Energy Consumption and Other Abuses in the Energy Market”

Jarosław Sroczyński among the VIP Guests at the Leaders’ Meeting of the telecommunication and media sectors

Jarosław Sroczyński for the Economic Legislation Review: “Remedies in novelisation ”

J. Sroczyński for Rzeczpospolita: “Consolidation of companies in the media market – restrictive legislation”

J. Sroczyński, leading the workshop “Competition Law – Recent Changes and Current Issues”

J. Sroczyński: “Implementation of the EU Directive on Damages for Breaches of Competition Law”

Markiewicz & Sroczyński Law Firm in the ranking of specialized law firms by the “Polski Prawnik”

J. Sroczyński for Rzeczpospolita: “The amendment of the Law on the Protection of Competition and Consumers”

Nomination of Markiewicz & Sroczyński in the ”Global Competition Review 100” 2014 ranking

J. Sroczyński at the conference “The Competition and Consumer Protection Act – Opportunities and Threats”

J. Sroczyński named a “leading Polish specialist” in the 2014 Who’s Who Legal Competition ranking

Jarosław Sroczyński and Marcin Mioduszewski participated in the Katowice Business Run

Markiewicz & Sroczyński Law Firm Named in the 2014 Chambers Global Ranking

Jarosław Sroczyński contributes to “The Dominance and Monopolies Review 2014”

Comment by Jarosław Sroczyński on the Ukrainian crisis and its impact on the Gazprom abuse of dominance EU investigation

Nomination of Jarosław Sroczyński in the legal ranking ”Client Choice – international 2014”

Jarosław Sroczyński attending a meeting of authors of the European Lawyer Reference series

Mr. Jarosław Sroczyński and Markiewicz & Sroczyński GP awarded in the „Rzeczpospolita” 2014 Legal Ranking

J. Sroczyński for GCR: “Amendments to the Act on Competition and Consumer Protection”

Workshop „Liability for acts of unfair competition – consequences for the entrepreneurs”

Publication by Jaroslaw Sroczynski in the post-conference book Fordham Competition Law 2013

Jarosław Sroczyński for Merger Control: “A Chapter on Merger Control in Poland”

J. Sroczyński: Workshops for entrepreneurs in the real estate development industry

J. Sroczyński for Biznes i Prawo: “Wardrobing – the store sets its own return policy”

Article by Jarosław Sroczyński on benefits for consumers stemming from commitment decisions of the OCCP

J. Sroczyński on the planned amendment of Art. 28 of the Polish Law on the Protection of Competition and Consumers

Jarosław Sroczyński and Markiewicz & Sroczyński GP in the ”Chambers Europe 2013” ranking

J. Sroczyński at the Fordham Competition Law Institute: “40th Annual Conference on International Antitrust Law and Policy”

J. Sroczyński on TVN CNBC: “The rights consumers can assert in the event of a change in departure location”

Jarosław Sroczyński and Łukasz Wieczorek contribute to “The Dominance and Monopolies Review 2013”

J. Sroczyński for Radca Prawny: “The Activities of Polish Law Firms in Foreign Markets”

J. Sroczyński for the quarterly iKAR: “Retroactive discounts and the so-called shelf fee—the need for change”

J. Sroczyński for ICN-IBAJ: “Sanctions against individuals—one step forward, two steps back”

J. Sroczyński, “The Collection of So-Called Shelf Fees in Poland: Is It Necessary to Change the Regulations or Their Interpretation?”

Workshop „Competition law – new developments and existing problems and its impact on the functioning of market”

Markiewicz & Sroczynski’s substantive patronage of conference on energy market

J. Sroczyński at the UOKiK seminar: “Modeling and the stories behind it—how to strike a balance?”

10. Rzeczpospolita’s 2012 Law Firm Rankings. Recommended Lawyer and Law Firm

Jarosław Sroczyński published an article on consumer protection on the electronic payments market

Jarosław Sroczyński for Radca Prawny: “Boutiques and chains have the same customers”

An article by J. Sroczyński in the quarterly iKAR on the protection of collective consumer interests

Ł. Wieczorek: “The Concept of a Collective Dominant Position and Practical Aspects of Its Application”

J. Sroczyński for IP Student: “Combating Unfair Market Practices in Relation to Competition and Consumer Protection Law””

9. Rzeczpospolita’s 2011 Law Firm Rankings. Recommended Lawyers and Law Firms

Markiewicz & Sroczynski GP recommended in “Global Competition Review 100” ranking in 2011

J. Sroczyński: “The Growth of Online Distribution and New Opportunities in Light of the Regulation on Vertical Agreements”

8. Rzeczpospolita’s 2010 Law Firm Rankings: Practice Area Leader and First Place Among Recommended Firms

Jarosław Sroczyński, workshop leader for Business Media Solutions: “Distribution Agreements”

Jarosław Sroczyński attending International conference on vertical restraints in Madrid

J. Sroczyński Named Leader in “Competition and Antitrust Law” in the 7th “Rzeczpospolita” Ranking of 2009

J. Sroczyński for BMS: “Class-action lawsuits—a new tool for customers to pursue their claims”

Jarosław Sroczyński: “Publishers’ Online Sales Activities: New Antitrust Regulations”

J. Sroczyński in Rzeczpospolita: “Boutique firms are becoming popular among lawyers”

J. Sroczyński: “Class Actions: Characteristics of the Institution and Their Application in Other Countries”

J. Sroczyński for BMS: “Open Market? Partner Selection and Resale Freedom in Distribution Agreements”

Jarosław Sroczyński: “Regulations on unfair market practices – is change needed?”

A series of lectures for participants in the second edition of the IP Student UJ Workshops, led by the MS team

Markiewicz & Sroczyński Law Firm and 2 individual recommendations in The Legal 500 2009 ranking

Attorney Jarosław Sroczyński has been ranked as “Band 1” in the 2009 Chambers Guide

Forbes magazine’s “Top Lawyers” ranking in the field of “Antitrust and Competition Law”

Markiewicz & Sroczynski GP and Jaroslaw Sroczynski in the ranking of “PLC Which lawyer?” Yearbook 2009

Jarosław Sroczyński: “The Freedom to Practice as a Physician Who Uses Homeopathy”

J. Sroczyński to Speak at the Seminar “20th Anniversary of the Office of Competition and Consumer Protection”

Jarosław Sroczyński has been named a recommended lawyer by Who’s Who Legal 2009

J. Sroczyński: “Doomed to Empik? The Book Institute in Defense of Small Publishers”

J. Sroczyński: “The Conflict Between Copyright Law and Competition Law in the Case Law of the OCCP President”

J. Sroczyński at the PIKE: “The Impact of Advertising on Consumer Awareness and the State of the Media Industry”

A series of articles by lawyers from the MS Law Firm team in the magazine “Marketing w Praktyce”

Prof. J. Barta, Prof. R. Markiewicz, and Attorney J. Sroczyński – Expert opinions in “Rzeczpospolita”

Jarosław Sroczyński, instructor of the “Competition Law Workshop” for students at the Faculty of Law, JA

J. Sroczyński for IP Student: “Combating Unfair Market Practices: The Basic Principles of the Act”

Jarosław Sroczyński at the 3rd Congress on “Competition Law in Recent Case Law”

Markiewicz & Sroczynski GP in the “Global Competition Review” 2008 legal ranking

J. Sroczyński: A Three-Way Debate: Sponsors, Sponsored Parties, and the Media. Legal Issues in Sponsorship

“Practical Aspects of Applying the Act on Combating Unfair Competition: The Relationship Between Laws””

J. Sroczyński for Informedia: “Unfair market practices. A new law, but the same old practices?”

Conference Marking the Opening of the Markiewicz & Sroczyński Law Firm – A Series of Lectures by MS Partners