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About Joeri

Joeri is a UK, Dutch and European patent attorney with more than 15 years of experience in supporting his clients’ IP needs with high quality drafting, prosecution and opposition work and sound commercial and strategic advice. He has helped many clients to use their patent portfolio for the benefit of their business or to strategically move around the competition’s IP. Joeri spent a considerable part of his career in-house at a large and innovative multinational corporation, where he developed a deep love for combine harvesters and other agricultural technology.

Joeri's technical background lies in the field of experimental sub-atomic physics and his daily practice covers a broad range of physics, mechanical engineering and control software. Amongst all the different technologies he has been extensively involved in are optical recording, medical devices, agricultural equipment, consumer electronics, and automotive. He regularly represents clients in opposition and appeal procedures at the EPO. In the European patent community, he is best known for his claim drafting courses and his activities as a tutor for the C paper of the European Qualification Exam for aspiring patent attorneys.

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Sean Cummings Named Ireland Practitioner of the Year at the Managing IP Awards 2026

05.05.2026

Sean Cummings Named Ireland Practitioner of the Year at the Managing IP Awards 2026

Keltie partner Sean Cummings has been recognised at the Managing IP Awards 2026 as Practitioner of the Year among patent and trade mark attorney firms in Ireland.

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USPTO Publishes New Guidance on Inventorship for AI-Assisted Inventions

26.01.2026

USPTO Publishes New Guidance on Inventorship for AI-Assisted Inventions

The United States Patent and Trademark Office (USPTO) has issued revised guidance on inventorship for AI-assisted inventions.

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