80 to the registered proprietor and each registered user (not being the applicant) under the registration of the trade or service mark. Any person so notified who intends to intervene in the proceedings shall within thirty days of the receipt of such notification give notice to the Registrar on Form TM/SM 35 to that effect and shall send therewith a statement of the grounds of his intervention. The Registrar shall thereupon send copies of such notice and statement to the other parties, so that the intervention be known to the applicant, the registered proprietor, the registered user who intervenes. (2) Subject to subregulation (1) any such party may, within such time or times as the Registrar may appoint, leave evidence in support of his case, and the Registrar after giving the parties an opportunity of being heard may accept or refuse the application or accept it subject to any conditions, amendments, modification or limitations he may think right to impose. 82. Omitted [Omitted.] 83. Extension of time If in any particular case the Registrar is satisfied that the circumstances are such as to justify an extension of the time for doing any act or taking any proceeding under these Regulations not being a time expressly provided in the Act he may extend the time upon such notice to other parties and proceedings thereon, and upon such terms as he may direct, and the extension may be granted though the time has expired for doing the act or taking the proceedings. 84. Hearing Before exercising adversely to any person any discretionary power given to the Registrar by the Act, or these Regulations, the Registrar shall, if so required, hear such person thereon. 85. Application for hearing An application for a hearing shall be made within one month from the date of notification by the Registrar of any objection to an application or the date of any other indication that he proposes to exercise a discretionary power. 86. Notice of hearing Upon receiving such application the Registrar shall give the person applying thirty days notice of a time when he may be heard. 87. Notification of decision The decision of the Registrar in the exercise of any such discretionary power shall be notified to the person affected. 88. Dispensing with evidence Where under these Regulations any person is required to do any act or thing, or to sign any document, or to make any declaration on behalf of himself or of any body corporate, or any document or evidence is required to the office, and it is shown to the satisfaction of the Registrar that from any reasonable cause such person is unable to do such act or thing, or to sign such document, or to make such declaration, or that such document or evidence cannot be produced or left as aforesaid, it shall be lawful for the Registrar, upon the production of such other evidence, and subject to such terms as he may think fit, to dispense with any such act or thing, signature, declaration, document or evidence. 89. Amendment of documents Any document or drawing or other representation of a mark may be amended, and any irregularity in procedure which in the opinion of the Registrar may be excused without detriment to the interests of any person may be corrected, if the Registrar thinks fit, and on such terms as he may direct.