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Work +48 22 351 00 67
Laszczuk i Wspólnicy sp.k., Maciej Łaszczuk, Warsaw, POLAND

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Maciej Łaszczuk

Work +48 22 351 00 67
Laszczuk i Wspólnicy sp.k.

Work Department

Arbitration Practice Group, Litigation Practice Group


Maciej Łaszczuk is the founder of Łaszczuk & Partners. For 30 years he has been advising and representing domestic and international clients in arbitration and litigation, as well as in civil law and commercial law. For many years, he had also advised clients on intellectual property issues and tax law. Currently, he focuses mainly on litigation and arbitration: constructing strategies of dispute management and client representation, both domestic and international. He also represents clients in domestic and international arbitration proceedings, especially related to mergers & acquisitions, real estate, construction contracts and commercial contracts. He has participated in nearly 300 arbitrations, as either the chairman or an arbitrator, proceeded in permanent arbitration institutions and ad hoc, under the rules of, among others, UNCITRAL, International Chamber of Commerce (ICC) and Court of Arbitration at the Polish Chamber of Commerce. He has also represented clients in high-profile post-arbitration proceedings. His experience also includes advising and representing clients in investment arbitration. He is the author or co-author of a number of publications on arbitration, and a lecturer on civil procedure and arbitration for advocate trainees.


He is the senior partner of Łaszczuk & Partners and was the managing partner of the firm for its first two decades. Before starting his own law practice, he advised foreign investors as an in-house lawyer. In 1978–1982 he worked in the State and Law Institute of the Polish Academy of Sciences. From 1982 to 1987 he served as a judge in the Province Circuit Court in Warsaw.


Polish, English


  • Polish Bar Council – member; Chairman of the Arbitration Committee, Chairman of Legal Practice Committee
  • Polish Arbitration Association - member of the board
  • Polish National Committee of the International Chamber of Commerce (ICC Polska) - member
  • Polish Association of European Law - member
  • Committee on the International Commercial Arbitration of the International Law Association - member
  • International Council for Commercial Arbitration (ICCA) - member
  • Austrian Arbitration Association - member
  • Swiss Arbitration Association (ASA) - member
  • International Association of Lawyers (UIA) - member
  • Palestra - Vice-chairman of the Editorial Advisory Board
  • ADR Arbitration and Mediation quarterly - member of the Editorial Advisory Board


Maciej Laszczuk graduated in 1978 from the Faculty of Law and Administration at the University of Warsaw. After completing judicial training, he passed the exam to qualify as a judge in 1981. In 1987 he became a legal adviser, and in 1989 an advocate.


Maciej enjoys theatre, literature and playing tennis.


Dispute resolution

Within: Dispute resolution

Laszczuk i Wspólnicy sp.k.'s key specialism is BIT and post-arbitration litigation. The team is jointly headed by vastly experienced arbitrators Justyna Szpara and Maciej Łaszczuk. It also includes Marek Korcz, who specialises in judicial and administrative proceedings and telecoms law. The group has a hugely active practice defending airlines in passenger rights issues.

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Legal Developments by:
Laszczuk i Wspólnicy sp.k.

  • Poland Arbitration 2011

    One issue under discussion is whether Poland should become a party to the Washington (ISCID) Convention. Because Poland is a party to more than 60 bilateral investment treaties (BITs) and has recently been a party to several high-profile investment arbitration proceedings, becoming a party to the ISCID Convention is discussed among practitioners, but faces strong opposition on the government side. Apart from that, another issue is whether Poland should continue to maintain BITs at all with other countries within the EU.
    - Laszczuk & Partners

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