OUR PROMISES
Dedicated. Experienced. Transparency.
Specialist in International Basketball Law
We focus on international basketball law, giving clients a level of depth and expertise that generalist sports law firms simply cannot match.
Proven Track Record in High-Profile Cases
From CAS arbitration to national disputes, we have represented athletes, agents, and clubs at the highest level.
Clear Communcation & Fast Responses
We believe clients should never be left wondering about the status of their matter. From the initial consultation to the final resolution, we keep you informed at every stage with clear, practical advice and regular updates.


Basketball Lawyer
Mr. Nick Poggenklaas
Nick Poggenklaas is a Dutch attorney-at-law as of 2016. He specialises in (international) sports law and has a particular focus on basketball law. In fact, Nick may be one of the most specialised attorneys in this specific field of sports law.
Nick has represented athletes, player agents, and clubs in high-profile disputes, including arbitration proceedings at the Court of Arbitration for Sport (CAS) and the Basketball Arbitral Tribunal (BAT).
He is a published author in respected national and international legal journals related to sports law, and is currently authoring a book on BAT jurisprudence.
Contact
poggenklaas@dbv-advocaten.nl
+31 6 55 79 75 94 (also for WhatsApp)
Sports lawyer
Mr. Daan Laan
Daan Laan is a Dutch attorney-at-law as of 2026. He specialises in contract law, bankruptcies and (international) sports law. Daan has a particular interest for professional cycling and takes up roles within the Dutch cycling association, KNWU.
Daan is a member of the Dutch Association for Sports Law.
Contact
laan@dbv-advocaten.nl
+ 31 75 635 3831


Attorney-at-law
Mr. Jan-Wolter Bloem
Jan-Wolter is a highly experienced attorney-at-law with over 25 years of legal practice. Throughout his career, he has developed extensive expertise in drafting, reviewing and negotiating complex commercial agreements, including contracts relating to image rights, intellectual property and commercial partnerships.
Renowned for his strategic insight, sharp analytical skills and exceptional negotiating abilities, Jan-Wolter combines legal expertise with a pragmatic, results-driven approach. He excels at navigating complex legal and commercial challenges, identifying opportunities and developing creative solutions that protect his clients’ interests while achieving their broader business objectives.
In addition to his legal career, Jan-Wolter is an entrepreneur himself. This gives him a distinctive understanding of the commercial realities, opportunities and challenges faced by business owners. Furthermore, Jan-Wolter used to play basketball in his free time himself.
Contact
bloem@dbv-advocaten.nl
+ 31 75 635 3831
The Firm
Duijn Bloem Voss Advocaten
Duijn Bloem Voss Advocaten is a law firm with two office locations, namely Alkmaar and Zaandam (the Netherlands). We handle cases for all kinds of clients. We have a lot of experience with legal matters related to sport, but our expertise goes way beyond only sports law. More information about our firm can be found at: http://www.dbv-advocaten.nl.
