26 TRADE MARKS REGULATIONS, 1970 (L.I. 667) before or affecting the Registrar or the Minister under the Act and these Regulations by signing and sending to the Registrar a Form of Authorisation of Agent in the prescribed form. In such case, service upon the agent of any document relating to the proceeding or matter shall be deemed to be service upon the person so appointing him. In any particular case the Registrar may require the personal signature or presence of an applicant, opponent, proprietor, registered user or other person. Regulation 72—Interpretation. In these Regulations, "the Act" means the Trade Marks Act, 1965 (Act 270); "agent" means an agent duly authorised to the satisfaction of the Registrar. Regulation 73—Revocations. The following instruments shall cease to have effect:— (a) all statutory instruments made under section 60 of the Trade Marks Ordinance (Cap. 180); (b) the Schedule to the Trade Marks Ordinance (Cap. 180); (c) all Orders made under section 68 of the Trade Marks Ordinance (Cap. 180); (d) the Trade Marks (Fees) Regulations, 1960 (L.I. 91).