“(2) Subject to subsections (2A) and (2G),the registration of a trade mark may be declared invalid on the ground— (a) that there is an earlier trade mark in relation to which the conditions set out in section 5(1), (2) or (3) obtain, or (b) that there is an earlier right in relation to which the condition set out in section 5(4) is satisfied, unless the proprietor of that earlier trade mark or other earlier right has consented to the registration.”
“(2) A trade mark shall not be registered if because— (a) it is identical with an earlier trade mark and is to be registered for goods or services similar to those for which the earlier trade mark is protected, or (b) it is similar to an earlier trade mark and is to be registered for goods or services identical with or similar to those for which the earlier trade mark is protected, there exists a likelihood of confusion on the part of the public, which includes the likelihood of association with the earlier trade mark. (3) A trade mark which— (a) is identical with or similar to an earlier trade mark …shall not be registered if, or to the extent that, the earlier trade mark has a reputation in the United Kingdom …and the use of the later mark without due cause would take unfair advantage of, or be detrimental to, the distinctive character or the repute of the earlier trade mark. … (4) A trade mark shall not be registered if, or to the extent that, its use in the United Kingdom is liable to be prevented—(a) by virtue of any rule of law (in particular, the law of passing off) protecting an unregistered trade mark or other sign used in the course of trade, where the condition in subsection (4A) is met…”
"(a) the likelihood of confusion must be appreciated globally, taking account of all relevant factors; (b) the matter must be judged through the eyes of the average consumer of the goods or services in question, who is deemed to be reasonably well informed and reasonably circumspect and observant, but who rarely has the chance to make direct comparisons between marks and must instead rely upon the imperfect picture of them he has kept in his mind, and whose attention varies according to the category of goods or services in question; (c) the average consumer normally perceives a mark as a whole and does not proceed to analyse its various details; (d) the visual, aural and conceptual similarities of the marks must normally be assessed by reference to the overall impressions created by the marks bearing in mind their distinctive and dominant components, but it is only when all other components of a complex mark are negligible that it is permissible to make the comparison solely on the basis of the dominant elements; (e) nevertheless, the overall impression conveyed to the public by a composite trade mark may, in certain circumstances, be dominated by one or more of its components; (f) and beyond the usual case, where the overall impression created by a mark depends heavily on the dominant features of the mark, it is quite possible that in a particular case an element corresponding to an earlier trade mark may retain an independent distinctive role in a composite mark, without necessarily constituting a dominant element of that mark; (g) a lesser degree of similarity between the goods or services may be offset by a greater degree of similarity between the marks, and vice versa; (h) there is a greater likelihood of confusion where the earlier mark has a highly distinctive character, either per se or because of the use that has been made of it; (i) mere association, in the strict sense that the later mark brings the earlier mark to mind, is not sufficient; (j) the reputation of a mark does not give grounds for presuming a likelihood of confusion simply because of a likelihood of association in the strict sense; and (k) if the association between the marks creates a risk that the public might believe that the respective goods or services come from the same or economically-linked undertakings, there is a likelihood of confusion."
“…there is no hard rule that use of a descriptive term cannot lead to a finding that there is confusion but they also show that such a case is harder to establish. It also has the impact of somewhat downgrading the significance of conceptual similarity in the evaluation of the likelihood of confusion at least in so far as the mark is descriptive of the goods and services in question.”
“ . . . Where descriptive words are included in a registered trade mark, the courts have always and rightly been exceedingly wary of granting a monopoly in their use.”