Procedure for intervention
35.—(1) Any person, other than the registered proprietor, claiming to have an interest in proceedings on an application under rule 31, rule 32, rule 33 or rule 34 may file an application to the registrar on Form TM27 for leave to intervene, stating the nature of his interest and the registrar may, after hearing the parties concerned if so required, refuse such leave or grant leave upon such terms and conditions (including any undertaking as to costs) as she thinks fit.
(2) Any person granted leave to intervene (the intervener) shall, subject to any terms and conditions imposed in respect of the intervention, be treated as a party to the proceedings for the purposes of the application of the provisions of rule 31, rule 32, rule 33 or rule 34 (as appropriate).