It is prohibited to import counterfeit goods.
For owners of an intellectual property right
If you own an intellectual property right to a product, nobody may copy that product unless you have given your explicit permission for doing so. If you suspect that your intellectual property right is being or will be infringed upon in the Netherlands or in another Member State of the EU, you may ask Customs to take measures to stop that infringement.
If Customs approves your request, and Customs encounters the goods that your describe in your request during an inspection, Customs will stop those goods. You will then be notified of the event, to allow you to determine whether or not your intellectual property right is indeed being infringed upon. If it is, you can institute legal proceedings.
Another possibility is that Customs notes a possible infringement on intellectual property rights in the course of an inspection, without the trademark proprietor having submitted a request beforehand. In such cases, Customs will contact the trademark proprietor, who may then take measures to protect his rights.
For more information see the following fact sheets: Intellectual property rights april 2014
For further information you can contact the Customs department that deals with counterfeit and pirated goods:
Tax and Customs Administration / Groningen
Intellectual Property Rights Department
PO Box 3070
6401 DN Heerlen
Phone: +31 88 151 21 23
When counterfeit goods are entering The Netherlands, we seizure these goods and you can be fined.
For (private) travellers apply some minor exemptions: see on this site the part Individuals, Abroad and customs, Luggage, From a non-EU country, Special products and pets, part Counterfeit products.