Section 74. Address for service

74. Address for service. —An address for service stated in an application or notice of opposition shall, for the purposes of the application or notice of opposition be deemed to be the address of the applicant or opponent, as the case may be, and all documents in relation to the application or notice of opposition may be served by leaving them at or sending them by post to the address for service of the applicant or opponent, as the case may be. — 75. Trade usages, etc., to be taken into consideration. In any proceeding relating to a geographical indication, the[1] [Registrar or the High Court, as the case may be,] shall admit evidence of the usages of the trade concerned and of any relevant geographical indication legitimately used by other persons. — 76. Agents. Where, by or under this Act, any act, other than the making of an affidavit, is required to be done before the Registrar by any person, the act may, subject to the rules made in this behalf, be — done instead of by that person himself, by a person duly authorised in the prescribed manner, who is, (a) a legal practitioner, or (b) a person registered in the prescribed manner as a geographical indications agent, or (c) a person in the sole and regular employment of the principal.