
CMS‘ group is well-known for its abilities advising in the broad range of high-profile insurance cases, including those involving PI, D&O, and product liability and recall claims. Insurtech, cyber, and warranty and indemnity matters all feature prominently in the team’s workload. Bas Baks has expertise litigating in PI, D&O, financial lines and construction project-related work and ’leads the team in a profound manner’ alongside experienced insurance litigator Leonard Böhmer. Oskar van de Weijer also has litigious expertise in both domestic and cross-border contexts.
Testimonials
Collated independently by Legal 500 research team.
‘CMS in the Netherlands is our first choice of law firm where Dutch Law is the relevant jurisdiction. The partners who we work alongside in the insurance group have great knowledge of the industry and provide clear and pragmatic advice with pleases all stakeholders.’
‘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.’
‘Approachable, strategic in contentious cases and clear in their advice. I would always go to this firm in difficult multi-party contentious insurance cases.’
‘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.’
‘A creative team with good contacts in the insurance market - they are pragmatic.’
‘Annelies Zwart is a bright lawyer and Bas Baks leads the team, including new young talents, in a profound manner.’
‘CMS's insurance practice stands out for its deep expertise, global network, and forward-thinking approach, but most of all I like their people-driven and down-to-earth approach.’
‘Bas Baks has put together a team of highly experienced professionals with deep knowledge of the insurance industry, from regulatory and transactional experts to dispute resolution specialists, making them trusted advisors for complex insurance matters.’
Key clients
- Allianz Global Corporate & Specialty
- Aon
- AXA XL
- Axis
- Chubb
- Digital Partners
- Lemonade
- Liberty Mutual Insurance Group
- Lloyds Insurance Company
- Markel
- MS Amlin
- QBE
- Raetsheren
- Starr
- Tokio Marine
Lawyers

Practice head
The lawyer(s) leading their teams.
Leonard Böhmer, Bas Baks