Los & Stigter

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Los & Stigter
Weteringschans 96
1017 XS Amsterdam
Tel: +31 20 623 68 32




Patents, trademarks, licences, litigation, oppositions, designs, advices on validity



Los & Stigter is a well-known brand in the field of intellectual property and its protection.


The firm is established in 1910 and employs experienced attorneys with proven track records, mostly in multinational industries.

Currently the firm has three offices in the Netherlands in Amsterdam, region Utrecht and region Eindhoven, and closely works together with an extensive network of associated firms in other countries.

From the firm’s offices close to the European Patent Office and the Benelux Office for Intellectual Property in The Hague, effective filing and prosecution of patent-, trademark- and design-applications is carried out.

Los & Stigter has a client-portfolio including large, small and medium-size enterprises having their head-offices in either Europe, the Americas, or Asia. The firm handles applications for these clients’ protective rights throughout the world.

Patent Attorneys

Jacques van Breda

Ferdinand Leeger

Ghassan Salim

Irma Scheltus


Trademark & Design Attorneys

Karin Doornweerd-Boeree

Pieter Flier