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Michal Gajdus



Gajdus Michal
Michal Gajdus



Michał specialises in commercial and IP litigation. He has experience in a wide range of commercial disputes before international courts and arbitration tribunals, as well as before domestic courts and regulatory bodies.

Michał focuses primarily on patent and unfair competition litigation; he has represented clients in a number of landmark patent cases that have shaped the Polish life sciences market. He works primarily for major companies from the pharmaceutical, media and energy sectors.

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Ukranian flag

Publications: 23 February 2023

One year on: A&O’s global pro bono legal support for Ukrainian refugees

A year ago on 23 February 2022, Russia and Ukraine stood on the brink of war. And then, just a few hours later on 24 February, Russia invaded Ukraine in a major escalation of the Russo-Ukrainian…

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Publications: 19 July 2022

Directing the pro bono response to a growing international refugee crisis

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News: 18 July 2022

A&O practices and lawyers top rankings in Patent Law

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Publications: 21 June 2022

Responding to the refugee crisis on Ukraine’s border

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Experience highlights



Grzybowska 56

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Admitted as an Advocate (Poland), 2017


MA, the Law Faculty of the University of Warsaw, 2013

BA, International Commercial Relations, the Institute of International Relations of the University of Warsaw, 2011

Ph.D in Law, the Law Faculty of the University of Warsaw, in progress

Other noteworthy experience


  • A leading pharmaceutical company in proceedings involving the defence of a patent against infringement by three pharmaceutical companies that simultaneously offered and marketed products with virtually identical compositions compared to the product protected by the patent 
  • A leading international telecom operator in an unfair competition dispute with its competitor
  • A leading gas and oil company in a patent infringement dispute involving one of the highest-ever damage claims in the CEE region
  • An international bank in a real estate dispute with the state
  • An international life sciences company in a regulatory dispute with the national medicines agency
  • A leading international pharmaceutical company in a cross-jurisdiction patent infringement dispute concerning an experimental medicinal device
  • One of the largest Polish insurance companies in several protection of reputation disputes with the media
  • An innovative international pharmaceutical company in an unfair competition dispute concerning the marketing and advertisement of its products

Pro bono

  • Michał is deeply committed to pro bono activities. He is representing Polish judges in a total number of 58 on-going court proceedings before the Court of Justice of the European Union, the European Court of Human Rights, the Supreme Court of Justice, the Supreme Administrative Court, the general courts and the so-called “Disciplinary Chamber”. He was also involved in representing women who were for protesting against the abortion ban in Poland in 2020.


Awards & accolades

PBCI Award

Access to Justice, 2021