(a) the division of an application for the registration of a trade mark into 2 or more separate applications, each of which claims the same protection under this Ordinance as the original application;
(b) the merging of separate applications for registration of a trade mark, each of which claims the same protection under this Ordinance, into a single application;
(c) the merging of separate registrations, each of which provides the same protection under this Ordinance in relation to the same trade mark, into a single registration; and
(d) the registration of a series of trade marks.
(2) Without prejudice to the generality of subsection (1), provision may be made by the rules as to-
(a) the circumstances in which, and conditions subject to which, the division of an application for registration, the merging of separate applications or registrations, or the registration of a series of trade marks, is permitted;
(b) the effect of a division of an application for registration or of a merger of separate applications or registrations; and
(c) the purposes for which an application for the registration of a trade mark is to be treated as a single application and those for which it is to be treated as a number of separate applications.
(3) In this section, "series of trade marks" (一系列的商標) means a number of trade marks which resemble each other as to their material particulars and differ only as to matters of a non-distinctive character not substantially affecting the identity of the trade mark.