s 50 Registrar’s appearance in proceedings involving rectification.
(1) In any legal proceeding in which the relief sought includes alteration or rectification of the register, the Registrar shall have the right to appear and be heard, and shall appear if so directed by the Court. (2) Unless otherwise directed by the Court, the Registrar in lieu of appearing and being heard may submit to the Court a statement in writing signed by him, giving particulars of the proceedings before him in relation to the matter in issue or of the grounds of any decision given by him affecting it or of the practice of the Patent Office in like cases or of such other matters relevant to the issues, and within his knowledge as Registrar, as he thinks fit, and the statement shall be deemed to form part of the evidence in the proceeding.