Management Team

The Management Team of NLO Shieldmark consists of Marlous Stal-Hilders (Managing Partner), Hans Bottema (Managing Partner), Erwin Ehrenburg (Managing Partner) and Sjoerd van der Zee (Managing Director).


The daily management of the NLO Shieldmark practice is led by Marlous Stal-Hilders. 



Hans Bottema



Marlous Stal-Hilders




Erwin Ehrenburg




Sjoerd van der Zee






Fake invoices

Fake invoices are unfortunately a well known problem among trademark owners. A fake invoice is a misleading invoice (or letter) which reffers to a trademark, design, patent or patent application. A payment is requested for a publication in a register or to extend the validity of a registration.They use names like Worldwide database or Trademarks and Patents, Euro IP Register, International Patent & Trademark Database.


More information and examples of fake invoices


Our advice: don't pay. Please contact us is you have any doubts.

NLO Shieldmark wins Award ‘Benelux - Firm of the Year for Trade Mark Prosecution’

NLO Shieldmark is proud to have been voted ‘Benelux - Firm of the Year for Trade Mark Prosecution’ by the highly respected Managing IP magazine. The award was presented on Thursday 10 March 2016 in London.


We wish to thank our clients and fellow professionals for their positive feedback and for believing in our quality and service.