3. In section 1, for subsection (1) substitute—
“(1) In this Act “trade mark” means any sign which is capable—
(a)of being represented in the register in a manner which enables the registrar and other competent authorities and the public to determine the clear and precise subject matter of the protection afforded to the proprietor, and
(b)of distinguishing goods or services of one undertaking from those of other undertakings.
A trade mark may, in particular, consist of words (including personal names), designs, letters, numerals, colours, sounds or the shape of goods or their packaging.”.