23. Any amendment pursuant to section 15(2) of the Act shall be made in the form specified in the Fourth Schedule, together with the payment of the appropriate fee specified in the First Schedule. 24. (1) The Controller shall, on receipt of an application for a patent, mark on each document making up the application, the actual date of receipt and the application number as per the following format "MU/P/X/Y", where "X" is the last 2 numbers of the year in which the initial documents were received and "Y" is a five-digit number allotted in the sequential order in which applications for registration are received. (2) Where any correction or other documents to be filed are received on different dates, the Controller shall mark their actual date of receipt in the appropriate place of the application for a patent. (3) The application number allotted under paragraph (1) shall be quoted in all subsequent correspondence concerning the application. 25. (1) The Controller shall examine whether the application complies with section 18 of (2) Where the Controller considers that section 18 of the Act has not been complied the Act. with, or that the applicant has failed to include the required drawings, the Controller shall request the applicant to make the necessary corrections or to furnish the missing documents, as appropriate. (3) A request under paragraph (2) shall (a) (a) be in the form specified in the Fifth Schedule; (b) (b) specify the correction to be made or the filing of any missing drawing; (c) (c) state the fees to be paid, if any; and