if it is proved, on examination, that the variety is no longer distinct, stable or sufficiently uniform;

if the person or persons responsible for the variety so request, unless there is maintenance of the variety.

if the laws, regulations and administrative provisions adopted in pursuance of this Directive are not complied with;

if, at the time of the application for acceptance or during examination, false or fraudulent particulars were supplied concerning the factors on the basis of which acceptance was granted.