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Bartosz Miąskiewicz
Counsel

Bartosz Miąskiewicz

Advocate

Languages
  • Polish
  • English
Social media

Bartosz Miąskiewicz is an advocate and counsel in Dispute Resolution practice at CMS. 

Since 2011, he has provided strategic advice and represented clients in litigation, primarily in the financial sector but with experience across other sectors as well.

He specialises in disputes concerning unfair contract terms (ranging from risk assessment and proceedings before the Office of Competition and Consumer Protection to individual and collective disputes), mis-selling and unfair market practices (both B2B and B2C), financial instruments, capital market regulations and MiFID, as well as the protection of personal rights – with a particular focus on legal entities – and litigation strategies in repetitive, mass and collective disputes.

Bartosz has extensive experience in developing litigation strategies for series of dozens to hundreds of similar cases, often involving complex consumer and commercial law issues. He has represented clients, in particular financial institutions, before the Supreme Court of Poland and in cases before the Court of Justice of the European Union (CJEU).

He was recognised among the Top 7 Polish lawyers with the most extensive experience before the CJEU (Wolters Kluwer report “Polish Lawyers before the CJEU: 2004–2024”) and is individually recommended in The Legal 500 international rankings in dispute resolution.

At CMS, he is also part of the Business Transformation Team, where he co-develops innovative solutions for legal services. He applies Legal Design principles and promotes the use of plain language in legal communication.

Relevant experience

Commercial Litigation

  • Seven banks in several disputes regarding financial instruments, based, inter alia, on allegations of violation of the MIFID directive, with a total value exceeding PLN 1 billion (including currency options, CIRS transactions, corporate bonds) - in many cases also participation in settlement talks concluded with agreements that are satisfactory for both parties.
  • Two banks in a series of disputes related to the allegation of participation in a price cartel - an agreement on the determination of interchange fees charged when settling transactions made with the use of payment cards.
  • A fuel concern in a series of disputes with franchisees.
  • A joint-stock company in a series of processes related to the performance of framework agreements concluded under sectoral procurement procedures, concluded with a court settlement satisfactory to both parties.
  • A  bank in a dispute over the payment of a compensatory remuneration, brought by a company acting as an agent-coordinator derived from a tripartite agency agreement.
  • A joint-stock company in a dispute brought by a consulting company for the payment of remuneration under a contract for the elaboration of a development strategy, ended with a court settlement satisfactory to both parties, representing the company during settlement discussions that were successfully conducted at the appeal stage.
  • A company from the armaments sector in a dispute regarding a framework agreement and in a series of disputes related to a lease agreement.
  • A leasing company in a dispute over payment in connection with a claim for payment of an amount corresponding to the adjusted value of VAT.     

Consumer Law

  • Seven banks in several hundred court proceedings related to the allegation of invalidity or partial ineffectiveness of denominated and indexed loan agreements.
  • Three banks in group proceedings with the participation of several thousand borrowers regarding indexation clauses and low down payment insurance.
  • Updating contract templates from the point of view of consumer law, i.a. as part of the adaptation of the provisions implementing the PSD2 directive and the BMR regulation.
  • Financial institutions in cases related to abstract control of contract templates and in cases of infringement of collective consumer interests.
  • Financial institutions in other types of criminal and administrative proceedings conducted, e.g. by The Office of Competition and Consumer Protection (UOKiK), the Polish Financial Supervision Authority (KNF), or the Financial Ombudsman, initiated by consumers or ex officio in connection with allegations of infringement of consumer rights.

Corporate Advisory

  • Editing of current reports under the obligation to provide confidential information by joint-stock companies (ESPI) related to the conduct of court and administrative proceedings.
  • Updating templates of franchise agreements used by a fuel concern for the purposes of implementation within the nationwide network of petrol stations.

Protection of personal rights

  • A local-government organisation in a dispute over the cessation of violations, an apology and payment for a social goal, set against a weekly magazine with a nationwide coverage, an internet news portal, and a well-known journalist and politician.
  • A financial institution in security proceeding and in an action for the cessation of infringements of personal rights in the form of pickets and demonstrations, as well as repeated publication of offensive entries on the Internet infringing the personal rights of a legal person, concluded with a satisfactory settlement.

Publications

Memberships & Roles

  • Member, Warsaw Bar of Advocates.

Education

  • Advocate, Bar of Advocates, Warsaw.
  • Master’s degree, Warsaw University, Warsaw.
Practice Areas

Further reading

  • CMS strengthens dispute resolution team in Poland

Insights by Bartosz

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