(2) At the request of an interested party, the Registrar shall record the fact of the change and, except in the case of an application, the Registrar shall publish the change in the prescribed manner. (3) The change shall have no effect against third parties until it has been recorded. (4) A licence contract concerning a patent or a registered utility model certificate, or an application shall be submitted to the Registrar who shall keep its contents confidential but shall record it and publish a reference to it in the prescribed manner. (5) The licence contract shall have no effect against third parties until it has been recorded. Section 30—Representation. Where an applicant's ordinary residence or principal place of business is outside the country, the applicant shall be represented by a legal practitioner resident and practicing in the country. Section 31—Patent Registry. (1) The Patent Registry shall be located at the Registrar-General's Department of the Ministry of Justice. (2) The Registry shall by responsible for the registration of patents and for the administration of registered patents. (3) The Registry shall be headed by the Registrar-General who shall be assisted by such Assistant Registrars as may be appointed in accordance with article 195 of the Constitution. (4) The Registrar may delegate any functions of the office of the Registrar. Section 32—Register. (1) The Registry shall maintain a register for patents and utility model certificates. (2) All the recordings provided for under this Act shall be recorded in the register. (3) The register shall be open to the public and a person may obtain an extract from the register in the prescribed manner. (4) The Registrar shall cause to be published in the Official Bulletin, Gazette or any print media any publications required under this Act.