26.—(1) The period prescribed for the purposes of section 16(1) is eighteen months beginning with—
(a)where there is no declared priority date, the date of filing of the application; or
(b)where there is a declared priority date, that date.
(2) Where a person’s application under rule 11(1)(a) or (b) has been accepted by the comptroller, the comptroller must ensure that the application for the patent as published does not mention that person’s name and address as those of the person believed to be the inventor (or, as the case may be, that person’s address as that of the person so believed).