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CMS Cameron McKenna Nabarro Olswang Posniak i Sawicki sp.k.

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Arkadiusz Korzeniewski

Work +48225205658

Work Department

Dispute Resolution


Partner, Head of CEE White Collar Crime Initiative


Arkadiusz Korzeniewski is a Polish qualified advocate and partner in the Dispute Resolution Department at CMS. He leads on the CMS CEE White Collar Crime initiative. Arkadiusz Korzeniewski specialises in litigation cases arising from white collar crime, corporate, construction contracts, class actions and public procurement. He has also significant experience in advising on international commercial and investment arbitration. He has several years’ experience in complex criminal and commercial disputes, particularly in cases related to fighting corruption and fraud. He represents clients in proceedings before law enforcement authorities (the Prosecutor’s Office, Central Anticorruption Bureau, Central Bureau of Investigation, Internal Security Agency). He also advises on conducting internal investigations, including hearings of employees, document searches, and analyses of electronic data and financial information. He has experience in consulting in international investigations, in particular those conducted by American services. He has also provided advice in the course of cross-checks by state services.


Polish; English


Warsaw Bar of Advocates


Dispute resolution

Within: Dispute resolution

CMS Cameron McKenna Nabarro Olswang Posniak i Sawicki sp.k.'s 'meticulous' team demonstrates 'an ability to provide clear recommendations and master crisis situations'. The team comprises experts in contentious competition, infrastructure, IP, real estate, employment and tax issues, but it also stands out for its pro bono human rights work for non-governmental organisations, where its 'sensitivity to social issues' is praised by one client. Department head¬†MaŇāgorzata Surdek¬†specialises in investment arbitration and was appointed to the ICC International Court of Arbitration in June 2018.¬†Anna Cudna-Wagner¬†is defending mBank against multiple class actions brought by retail clients, concerning mortgage loans indexed in Swiss francs.¬†Arkadiusz Korzeniewski¬†represents Millennium Bank in an Office of Competition and Consumer Protection¬†investigation into alleged infringement of collective consumer interests.¬†Katarzyna Kucharczyk¬†and¬†Joanna MŇāot¬†are also recommended.

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White-collar crime

Within: Leading individuals

Arkadiusz Korzeniewski - CMS Cameron McKenna Nabarro Olswang Posniak i Sawicki sp.k.

Within: White-collar crime

CMS Cameron McKenna Nabarro Olswang Posniak i Sawicki sp.k.¬†represents companies and individuals in the spectrum of white-collar criminal matters, both in investigations and before the courts, including anti-bribery and corruption cases, anti-money laundering and criminal proceedings. Department head¬†Arkadiusz Korzeniewski¬†acted for IBM in relation to corruption charges brought against former state officials and commercial directors of the company; conducting an internal investigation that staved off criminal proceedings for the client. Senior associate¬†Maciej K√≥pczyŇĄski¬†is another key name.

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Legal Developments by:

  • Access to justice: protective costs orders in planning challenges

    Third parties and competing developers have no rights of appeal to the Secretary of State against planning decisions. Disappointed applicants can appeal to the Secretary of State and can have the merits of the application reconsidered. The only remedy available to a disappointed third party is a challenge by way of judicial review in the High Court on a point of law. The sense of frustration and disempowerment this creates has not been helped by the increasing complexity of the planning process and the use of consultation to legitimise decisions that many perceive may already have been taken.
    - CMS Group

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