(1) Any person who considers that a grant has been made in respect of a variety that is not new, distinct, stable, and homogeneous (as required by section 10) may at any time, by notice in writing to the Commissioner, object to the continuation in force of that grant.
(2) Any person who considers that a grant was made to a person who was not an owner of that variety may, by notice in writing to the Commissioner, object to the continuation in force of that grant.
(3) An objection under subsection (2) may be accompanied by an application in respect of the variety concerned.