19.—(1) A new application for a patent may be filed as mentioned in section 15(9)—
(a)before the end of the relevant period; or
(b)if earlier, before the earlier application is terminated or withdrawn.
(2) Such an application must include a statement that it is filed as mentioned in section 15(9).
(3) For the purposes of this rule the relevant period is—
(a)where an applicant is notified under section 18(4) that his earlier application complies with the requirements of the Act and these Rules, two months beginning with the date of that notification; or
(b)in any other case, the period ending three months before the compliance date of the earlier application.