Regulation 4

An application for registration of a United Kingdom Patent and all other communications between an applicant and the Registrar of Patents, and between the registered proprietor of a patent and the Registrar of Patents, may be made by or through an agent. Any such applicant or proprietor may, or if the applicant does not reside or carry on business in Singapore shall, appoint an agent to represent him in the matter of the patent by signing and sending to the Registrar of Patents an authority in writing to that effect in the Form A or in such other form as the Registrar of Patents may think sufficient.