Marcin Ziarkowski
Image of Marcin Ziarkowski

Marcin Ziarkowski

Senior Associate

Marcin has over a decade of experience advising on intellectual property matters, particularly patents and copyright.
Marcin has extensive experience in patent invalidation proceedings and patent litigation, with a particular focus on the pharmaceutical and telecommunications sectors. He develops and implements litigation strategies and represents clients before the Polish Patent Office, as well as common and administrative courts. In addition, Marcin advises colleagues across the firm on IP-related issues arising in a wide range of matters, including M&A transactions and real estate projects. Clients particularly value Marcin’s versatility, adaptability, and meticulous attention to detail.

Expertise

Industries

Experience

Representative matters

  • A wide range of innovative companies, in particular leading pharmaceutical companies, in high-profile patent infringement and invalidity proceedings, advising on the enforcement and defence of patent rights across a diverse portfolio of products and technologies.
  • MBDA UK Limited, a leading European defence company, on IP aspects of the supply of an enhanced ground-based air defence system to the Polish armed forces (through Polska Grupa Zbrojeniowa S.A.) as part of the NAREW programme, involving the development and delivery of components for short-range anti-aircraft missile systems.
  • Innova Capital, a mid-market private equity firm, on IP aspects of its investment in R-GOL.com, a leading distributor of specialised equipment for football enthusiasts, professionals, and football clubs in 11 countries in central and eastern Europe.
  • OLX Global, a global network of trading platforms, on IP aspects of its acquisition of Obido, the owner of the leading real estate platform connecting housing developers and clients in Poland.
  • Dover Corporation, a Fortune 500-ranked company and an American conglomerate manufacturer of industrial products, on IP aspects of its acquisition of Solaris Laser, a world-leading manufacturer of industrial fibre and CO2 laser coding, marking, and engraving systems.
  • Sumo Group on IP aspects of its acquisition of PixelAnt Games, a Wrocław-based video game development studio, which became part of the Sumo Digital group.

 

Awards

  • Next Generation Lawyer, IAM Patent 1000, 2025-2026
  • Rising Star, IP STARS (Managing IP), 2025
  • Rising Star of the Year (nominated), Managing IP EMEA Awards, 2025

Qualifications

Admissions

Warsaw Bar Association, 2021, Advocate

Academic

Intellectual Property Postgraduate Studies, Warsaw University, 2017

MA, Faculty of Law, Łódź University, 2016

Disclaimer
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.