Jade (Njô-Goe) Sieh

IP Consultant

Amsterdam office
+31 (0) 20 564 1424

Jade Sieh is a Senior Benelux and EU Trademark and Designs Attorney with more than 30 years' expertise in the field of IP strategy and development, infringements (oppositions, mediation, UDRP), M&A, counterfeit and clearance searches. Jade has experience with working for domestic and foreign small and medium-sized enterprises (SME), corporates and multinationals. At present Jade is mainly active for foreign corporations and multinationals besides working closely with the patent specialists within the Novagraaf group.

Career history

Jade graduated in 1986 as Master of Law (LL.M.) at Leiden University specialising in Company Law. She has been working in the field of IP since 1988 and was sworn in before the regional court of The Hague as trademark broker in 1991. In 1992, she became a BMM Certified Trademark and Design Attorney and, in 1996, a European Trademark and Design Attorney. Jade joined Novagraaf in 1999.

Work highlights

Jade was Interim Trademark Manager at an international pharmaceutical company for almost a decade and has considerable experience in advising multinationals on all aspects of IP.


Jade is a member of the BMM, ECTA, CITMA and AIPPI.


  • Dutch
  • English

Areas of expertise

  • Trademark prosecution
  • Trademark filing strategies
  • Trademark portfolio audits
  • M&A projects
  • Counterfeit
  • Trademark clearing searches
  • IP Infringements
  • Registered and unregistered designs
  • Copyright
  • Domain names
  • IP strategy
  • Dispute resolution
  • Litigation management
  • Unfair competition
  • Pre-litigation & litigation

Industry specialisms

  • Automotives & aviation
  • Chemistry
  • Cosmetics & personal care
  • Drinks/beverages
  • Electronics
  • Fashion & textiles
  • Financial services
  • Food & food technology
  • Hospitality
  • Licensing
  • Life Sciences & biotech (pharma, medical devices, biosensors)
  • Luxury goods
  • Oil & gas
  • Packaging design
  • Sports, travel & entertainment
  • Telecommunications


Jade is a BMM Certified Trademark Attorney. The BMM Certified Trademark Attorney mark is a recognised quality seal of trademark attorneys.


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