The rights arising from trade mark registration may be lost. First, when registration is not renewed, the registration will be deleted from the register. Second, a registered trade mark is liable to be revoked if it has not been put to genuine use for more than five years. Third, a trade mark is subject to revocation when it has become the generic indication, the ‘name’ of the product. Fourth, a mark is also subject to revocation when it has become misleading. The last two revocation grounds are the mirror image of the absolute grounds for refusal, the difference being that revocation is available when the mark, although properly registered initially, has become generic or misleading at a later time. The first ground for revocation, absence of genuine use, has no counterpart at the time of filing or registration. Rather, the legislation provides trade mark proprietors with a period of five years following registration after which revocation is possible.