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I specialise in intellectual property (IP) law: trademarks, designs, copyright, patents and contracts containing IP clauses. I think along with you, analyse, look back and above all look ahead, providing clear and practical advice. Fast when needed, thorough if possible..

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Ernst van Knobelsdorff
HomePeopleErnst van Knobelsdorff
Lawyer

Ernst van Knobelsdorff

I clearly remember my time as a student intern at an IP firm. On my desk stood two bottles: one branded, the other almost identical. Why was this allowed—or not? That question immediately fascinated me. Not so much the rule itself, but what lies beneath it: how do you protect something that someone has conceived, created or invented? 

I am an attorney-at-law, and I have also spent several years working as in‑house counsel. My general counsel expected concise, sharp analysis. That expectation has stayed with me. Today, I work the same way: clear language, quick assessments, and a strong focus on what the business actually needs. Not just what the law says—but what works in practice. 

Many entrepreneurs are unaware of the value embedded in their intellectual property. As a result, opportunities go untapped—even in sectors where you might not immediately expect them, such as agriculture. I enjoy showing clients what is possible. 

Litigation can take years. If a product has already evolved by the time proceedings conclude, it is worth asking whether proceedings on the merits still makes sense. I therefore favour a swift and targeted approach. In many cases, summary proceedings leading to an immediate injunction are far more effective than years of drawn‑out court battles. 

Alongside my practice, I serve on the board of a nature conservation foundation, a role I took over from my father and greatly appreciate. Outside work, I run, cycle, and swim almost every day. I have completed Ironman triathlons, which demand endurance and smooth transitions—from swimming to cycling to running, without wasting time. My work is no different: It is all about switching quickly and efficiently.

Ancillary Positions

  • Board member, Stichting De Colckhof

Memberships

  • Member of the European Communities Trademark Association (ECTA)
  • Member of the Copyright Committee of ECTA
  • Member of the Benelux Association for Trademark- and Design law (BMM)

Education

  • Professional Training Program for Lawyers (BA) (2021)
  • Professional Education of Company Lawyers (SBB) (2017)
  • Dutch Law, Leiden University (2012)

Additional languages

  • Dutch
  • English
  • German

Register Of Fields Of Law

I am registered for the following principal and secondary legal areas in the Netherlands Bar’s register of legal practice areas:

  • Intellectual property law

This registration obliges me to obtain ten training points for each registered principal legal practice area in accordance with the standards of the Netherlands Bar.

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Expertises

  • Intellectual property
    • Counterfeiting
    • Copyright
    • Trademark law
    • Design law

Contact

Mail
e.vanknobelsdorff@rwv.nl
Telefoon
+31 6 10 36 47 99
+31 71 750 22 11

Get in touch with Ernst

If you have any questions or would like to make an appointment, contact me without obligation!
Telefoon
+31 6 10 36 47 99
+31 71 750 22 11
Mail
e.vanknobelsdorff@rwv.nl
Ernst van Knobelsdorff
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Haagweg 149
2321 AA Leiden
The Netherlands

+31 71 750 22 00
info@rwv.nl

 

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