The binding legal principles established by the majority judgment are: (1) Section 10(13) of the Trade Marks Act requires that the manner of use of the mark itself by its proprietor must be likely to cause deception or confusion; it does not permit comparison with the marks of other traders or encompass passing-off type deceptiveness based on another party's mark; (2) When determining whether a mark is liable to removal for lack of distinctiveness under s 10(2)(a), (b), or (c), the court must consider whether the mark has acquired distinctiveness through use as provided in the proviso to s 10(2); (3) A mark that has acquired distinctiveness through extensive use over a long period, supported by evidence of substantial sales, widespread advertising, and public recognition, is not liable to removal under s 10(2) even if the word or sign itself has a dictionary meaning or descriptive quality; (4) Trade mark co-existence agreements between parties using similar marks in different product categories are legally valid, and lawful use pursuant to such agreements does not constitute use likely to cause deception or confusion under s 10(13); (5) For purposes of s 27(1)(b), the proprietor must establish bona fide use during the relevant five-year period through clear evidence, but the court should not apply an overly technical approach requiring separate proof for each individual registration where marks are used as part of a genuine trading operation; (6) Sections 10(14) and 10(15) of the Act specifically address situations where competing marks are registered with consent; where such registration occurs lawfully, subsequent use pursuant to that consent cannot be attacked under s 10(13) by third parties; (7) The badge of origin function of a trade mark is fulfilled provided all items bearing that mark come from the same source, regardless of whether consumers associate the mark with a different well-known brand.