In order for a trade mark (other than a certification trade mark) to be registrable in Part A of the register, it must contain or consist of at least one of the following essential particulars:

(a) the name ofa company, individualor firm, represented in a special or particular manner;
(b) the signature of the applicant for registration or some predecessor in his business;
(c) an invented word or invented words;
(d) a word or words having .no direct reference to the character or quality of the goods and not being, according to its ordinary signification, a geographical name or a surname;
(e) any other distinctive mark, but a name, signature or word or words, other than such as fall within the descriptions in the foregoing paragraphs (a), (b), (c) and (d), shall not be registrable under the provisions of this paragraph except upon evidence of its distinctiveness.