(d) state the delay within which the corrections are to be effected or the missing documents are to be furnished. (4) Where no correction is made or no document is furnished within the delay specified in paragraph (3)(d), the application shall be deemed not to have been filed. (5) (1) Subject to paragraph (2), the Controller shall notify the applicant, in writing, of the filing date as soon as he is satisfied that section 18 of the Act has been complied with. (2) Where the Controller refuses to accord a filing date to an application, he shall notify the applicant, in writing, specifying the reasons for his decision. 26. (1) Where a filing date to an application has been given by the Controller, he shall examine the application pursuant to section 19 of the Act. (2) Where the Controller is satisfied that the conditions set down in section 19(1) of the Act have been complied with, he shall grant the patent and the applicant shall be so notified in writing. (3) Where 2 or more applications for a patent for the same invention, having the same filing date or, where applicable, the same priority date, are filed by the same applicant, the Controller may refuse to grant a patent in respect of more than one applications. (4) Where the Controller refuses to grant a patent in respect of more than one applications under paragraph (3), he shall notify the applicant in writing, specifying the reasons for the decision. (5) Where the Controller rejects an application under section 20(2) of the Act, he shall notify the applicant in writing, specifying the reasons for his decision.