Our experts

Philosophy and DNA

Patent office Custos IPC is a collective of self-employed professionals. Experts in patents, trademarks and designs. We form a cooperative of which independent IP experts are members. This model was chosen in the belief that people should be empowered. Do what you are good at and get even better at it. This applies to all 'our' specialists.

Our IP Experts are proactive and constructive. Intrinsically driven, genuinely interested and enjoy working on impactful innovations.

Our driving forces

The driving forces of our cooperative are, of course, its members. After all, without members there is no cooperative. Below, we would like to introduce everyone to you, so that you literally and figuratively have an idea of the person, his or her (personal) interests, experience, areas of expertise and in which field(s) they are active.

Here you will find an overview of expertises and sectors by member. As you can see, our patent office is at home in many markets.

Willemyn Slikker Custos

Willemyn Slikker

Founder and patent attorney
Enschede/Twente region

Sebastian Trip

Patent attorney trainee
Region Hilversum / Utrecht

Pim Lubberdink

Patent attorney
Zwolle / Overijssel region
Paul van der Valk Custos

Paul van der Valk

Patent attorney
Delft region / South Holland

Eric de Cock van Gimst

Patent attorney and Patent Information Professional
Amsterdam region / North Holland
Alex Hogeweg patent attorney

Alex Hogeweg

Patent attorney
Amersfoort / Utrecht region
Bas Hekman Custos

Bas Hekman

Founder and Business Developer
Enschede/Twente region

Christine ter Stege

Founder and Formalities Specialist
Arnhem region / Gelderland

Shayna Janzen

Formalities Officer in training
Arnhem region / Gelderland

Trix Voogd

Formalities Officer
Maastricht/Limburg region

Kees Alblas

Patent attorney
Region Tiel / Gelderland

You?

Vacancy Patent Attorney

Added value

A major advantage of working with patent agency Custos IPC is that all our specialists are experienced and driven, as well as having a wide range of expertise on board. This ensures substantive knowledge and continuity. We focus on the customer's needs and assess from there which expertise offers the best solution. Of course, this can also be a set of expertises that can be scaled up or down, depending on the customer's needs.

On our services page you can read more about the different forms of cooperation and what IP services and work we perform.

Collective memory

Our experts love their craft. They love to share their knowledge. If you would like to read more about patents, trademarks and designs, check out our 'Collective Memory'. This database contains all kinds of articles related to Intellectual Property. Ranging from short facts to in-depth long reads. With thanks to our members.