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Mari Korsten

Mari Korsten

Partner & Dutch and European patent attorney
I have worked at several international (lawyers) offices and in-house at Novartis in Switzerland. I am often involved in patent litigation cases at the courts in the Netherlands and Belgium. In addition, I regularly act in opposition proceedings at the European Patent Office and I help life-science companies to prepare and implement their patent strategy.


  • Chemistry
  • Pharma
  • Food
  • Medicines
Mari Korsten is super-experienced in the biotech field and has great skills in contentious matters
IAM Patent - 1000

I joined NLO as a partner in 2011. Previously, I worked as a Dutch and European patent attorney at Novartis Pharma in Switzerland, where I was responsible for the specialty products portfolio and litigation. After returning to the Netherlands, I joined Bird & Bird in The Hague where I handled oppositions and court proceedings on behalf of pharmaceutical and chemical clients.


  • MSc in industrial microbiology and product development, Wageningen University
  • Law degree (LLM), Radboud University in Nijmegen
When it comes to pharmaceuticals and biotechnology disputes, however, Mari Korsten is the firm’s figurehead. He comes highly praised for his prosecution work concerning life science patents.
Juve - 2021