In considering whether marks are substantially identical they should, I think, be compared side by side,
their similarities and differences noted and
the importance of these assessed having regard to the essential features of the registered mark and
the total impression of resemblance or dissimilarity that emerges from the comparison.
'The identification of an essential feature depends', it has been said,
whether there is substantial identity is a question of fact:
… On the question of deceptive similarity a different comparison must be made from that which is necessary when substantial identity is in question.
The marks are not now to be looked at side by side.
The issue is not abstract similarity, but deceptive similarity.
Therefore the comparison is the familiar one of trade mark law.
It is between, on the one hand, the impression based on recollection of the plaintiff's mark that persons of ordinary intelligence and memory would have; and,
on the other hand, the impressions that such persons would get from the defendant's television exhibitions.
To quote Lord Radcliffe
15)
The likelihood of confusion or deception in such cases is not disproved by placing the two marks side by side and
demonstrating how small is the chance of error in any customer who places his order for goods with both the marks clearly before him …
It is more useful to observe that in most persons the eye is not an accurate recorder of visual detail, and
that marks are remembered rather by general impressions or by some significant detail than by any photographic recollection of the whole'
In Australian Woollen Mills Ltd v F.S. Walton and Co Ltd
16), Dixon and McTiernan JJ said
17)
'In deciding this question, the marks ought not, of course, to be compared side by side.
An attempt should be made to estimate the effect or impression produced on the mind of potential customers by the mark or device for which the protection of an injunction is sought.
The impression or recollection which is carried away and retained is necessarily the basis of any mistaken belief that the challenged mark or device is the same'.“