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Justyna Ostrowska



Ostrowska Justyna
Justyna Ostrowska



Justyna has extensive professional experience covering consultancy on electronic trade, commercial contracts and new technologies law, as well as intellectual property rights and data protection.

Justyna also has considerable expertise in advising world-leading operators on ecommerce, e-payments, unfair commercial practices and misleading advertising matters. She has also been involved in many complex outsourcing transactions, acting for both customers and suppliers. She assists clients in managing the implementation of IT systems, and outsourcing solutions and cloud projects, and by negotiating agreements concerning the servicing, maintenance, implementation and licencing for IT solutions. She also represents clients in contentious cases carried out by the Polish Patent Office and Polish common courts, covering enforcement of the protection of intellectual property rights and fair competition principles, and co-ordinates intellectual rights customs property protection programmes.

Related articles


Publications: 27 September 2022

GIR - data privacy & transfer in investigations guide

Investigations by regulators and enforcement agencies, as well as internal investigations by companies, are common. Successfully managing the risks arising from these investigations requires expertise…

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Publications: 20 May 2020

Warsaw podcast - GDPR in M&A transactions

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Publications: 31 January 2020

Warsaw podcast: GDPR in M&A transactions - episode three

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Experience highlights



Grzybowska 56

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Admitted as an advocate, Warsaw Bar Association, Poland, 2009


Postgraduate Studies in Compliance, the Koźmiński Univercity in Warsaw, 2020

Postgraduate Studies in Competition law, the Polish Academy of Science, 2012

Postgraduate studies in European Law, the University of Warsaw, 2005

Master of Sciences, Faculty of Law and Administration, the Catholic University of Lublin, 2004

Other noteworthy experience


  • A US fin-tech company on the launch of a mobile application for consumer loans in Poland
  • One of the biggest FMCG retail chains in Poland on the implementation and management of an e-platform for sharing data and data monetisation strategies
  • An international retailer on privacy-related aspects of online advertising, including RTB and display advertising products and ad-tech solutions

Pro bono

  • Providing a Polish Non-Governmental Organisation – Czerwone Noski Klaun w Szpitalu Foundation, a Polish partner of Red Noses International – with ongoing advice on the General Data Protection Regulation, cookies, online and offline marketing activities and crowdfunding with the use of new technologies.
  • Advising a Polish SOS Children's Villages association on the data protection matters, online and offline marketing activities, trade mark protection and partnership agreements.


Published work

  • "Data Privacy & Transfer in Investigations guide – Poland”, Global Investigations Review, co-author, 2020-2021
  • "Global Patent Litigation Strategy and Practice: Poland”, Kluwer Law International, co-author, 2015-2022 
  • “Latest trends in Bolar exemptions rules in Europe”, Managing Intellectual Property, co-author, 2014
  • "Intellectual Property Law. Practical Issues"" LexisNexis, co-author, 2013"