Contact for information?

Do you have a question when applying for Plant Breeders’ Rights or registration? Please contact us at or

Telephone number:

+31 (0)71 332 6121

You can also go to the contactpage (click here)


Board for Plant Varieties

Visiting address:

Sotaweg 22, 2371 GD Roelofarendsveen, The Netherlands


Postal address:

P.O. Box 14, 2370 AA Roelofarendsveen, The Netherlands


Bankaccount: IBAN: NL82RABO0300017057

Prolongation registration

Prolongation of registration

Here you will find all important information about prolongation of registration. This is a legal task that the Board for Plant Varieties will actively perform from  2022 onwards. The purpose of prolongation of registration and what is required for its careful implementation is described step by step below.


Purpose of prolongation of registration
In the applicants' meeting of the Board for Plant Varieties of November 13, 2019, it was announced that the Board will start with prolongation of registration of vegetable and agricultural crops whose registration/listing will expire after 10 years. In this way, the trading position of these varieties can be extended again for a period of 10 years. Not all information is up to date in the current Dutch Variety Register (NRR), for example because some of the varieties no longer exist or if the company listed as a maintainer no longer exists. Our aim is to create a variety register in which only actual current data on available propagating material of varieties and their maintainers are listed. Prolongation of registration therefore leads to a cleaned NRR.

The Board will actively carry out this legal task from January 1, 2022 onwards.

Prolongation of registration: only if the variety is maintained

A variety is only eligible for prolongation of registration if it is “maintained”. This means that the variety still has to meet the conditions for distinctness, uniformity and stability (DUS), as laid down in the DUS examination. On the basis of information and expert knowledge obtained by the Board, the maintenance of the variety must be sufficiently guaranteed, which ensures that the variety continues to meet its identity and description. In the vast majority of cases this information will be available at the inspection bodies NAK and Naktuinbouw.

Applicants’ meeting 2019

During the applicants meeting on November 13, 2019, the maintainers expressed the wish that the Board would indicate in a document which of their varieties the registration period is about to expire. Every year the maintainer receives a letter with an overview of varieties that are eligible for prolongation of registration.

Procedure prolongation of registration

A module has been developed that allows you to digitally request the prolongation of registration of your varieties. This module can be consulted via myNaktuinbouw. If you don't have a login for myNaktuinbouw yet, you can request one.

Every year an overview is generated containing the varieties that you maintain and whose registration is about to expire. A final date is stated here, indicating the deadline before which the prolongation of registration must be submitted.