Arnold & Siedsma


Brand Whitlocklaan 114

Tel:+32 2 737 62 90

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Managing Partner: Joost Grootscholten

Quick facts:

Established: 1920
Languages : Dutch, English, German, French

Arnold & Siedsma is an all-round service provider for the protection of intellectual property (IP). Since 1920, your creation has been our motivation. We have 100 years of experience in the legal protection of intellectual property of inventions, trademarks and designs for self-employed persons as well as for large multinationals in the Netherlands and abroad. In addition to our offices in the Netherlands, Germany, Belgium and Switzerland, Arnold & Siedsma has an extensive global network of agents so that we can protect your rights anywhere in the world.

Arnold & Siedsma has more than sixty in-house technical and legal experts with knowledge of all the important innovative sectors, from biotechnology and pharmaceutics to semiconductors and software. Depending on your invention, we connect you to a patent attorney who specialises in your specific discipline. Our trademark and design attorneys are the best partners for all issues related to your trademarks or protecting the unique design of your products. Our IP attorneys at law can help you with anything related to legal procedures, such as upholding your rights.

Arnold & Siedsma is your actively involved and knowledgeable partner. We are happy to be of service and contribute to you and to your ideas


Last updated 3rd March 2020

Key Practice Areas: Designs, Patent prosecution, Patent strategy & counseling, Trade mark prosecution, Trade mark strategy & counseling, Patent litigation, Trade mark litigation, IP transactions, Patent office proceedings, Trade mark office proceedings

Key Sector Expertise: Automotive, Biotechnology, Chemistry, Construction & materials, Computer technology & services, Electronics, Food & beverage, Healthcare, ICT & software, Life sciences, Medical device, Universities & research, Telecommunication, Semiconductors, Robotics, Renewable energy, Optics & photonics, Pharmaceutical, Nanotechnology, Artificial intelligence, Mechanical