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Oskar Weijer
Partner

Oskar van de Weijer

Advocaat

Languages
  • Polish
  • Dutch
  • English

Oskar van de Weijer is a partner in our Litigation and Insurance Practice Area Group. He specialises in liability claims and insurance disputes. He advises insurance companies, D&Os and multinationals with a focus on the insurance sector.​

Oskar advises on and litigates in extensive liability claims in international disputes and complex policy disputes. He has been involved in several major issues in the insurance practice over the last year, in particular in D&O, PI, construction and financial institutions matters. Oskar also regularly advises in relation to W&I insurance and in (D&O) insurance matters in insolvency.​

Oskar has been with CMS since 2018 after having worked as an insurance lawyer at another law firm for five years.

Awards & Recognitions
01
  • Quote
    "Bas Baks has great knowledge of his field, and is approachable and collaborative. Oskar van de Weijer is personable, approachable, and provides clear analysis of complex matters."
    The Legal 500 EMEA, 2025
  • Quote
    "Bas Baks is clever and understands the bigger picture and end-game in a negotiation. His understated but firm approach is very helpful in contentious negotiations - he gets you the right result the right way. Oskar van de Weijer has a very good understanding of the insurance sector and how the London market operates."
    The Legal 500 EMEA, 2025
  • Quote
    "Bas Baks, Annelies Zwart and Oskar van de Weijer – friendly, engaged, proactive in solving matters, high knowledge of the industry."
    The Legal 500 EMEA, 2023

Awards & Rankings

  • The Legal 500 EMEA, 2025, Oskar van de Weijer is Recommended

Education

  • Master Civil Law, Radboud University
  • Master Criminal Law, Radboud University
  • Dutch Law, Radboud University
Practice Areas
sectors

Insights by Oskar

CMS Netherlands in the Chambers Europe 2026 rankings

19 Mar 2026 2 min read

Netherlands Supreme Court confirms legal requirements to invoke non-disclosure

06 Mar 2026 8 min read

CMS advises Capreon on the acquisition of New Babylon in The Hague

16 Dec 2025 1 min read

Dutch high court confirms limitation period begins with claim against the insured

27 Nov 2025 4 min read
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