“72. In the specific assessment of the overall impression of the designs at issue on the informed user, who has some awareness of the state of the prior art, the designer’s degree of freedom in developing the contested design must be taken into account. … the more the designer’s freedom in developing the contested design is restricted, the more likely minor differences between the designs at issue will be sufficient to produce a different overall impression on the informed user. … 82. In the absence of any specific constraint imposed on the designer, the similarities noted in [79]–[81] above relate to elements in respect of which the designer was free to develop the contested design. It follows that those similarities will attract the informed user’s attention…”
“ … as the Board of Appeal pointed out at paragraph 19 of the contested decision, in so far as similarities between the designs at issue relate to common features, such as those described at paragraph 67 above, those similarities will have only minor importance in the overall impression produced by those designs on the informed user. …”
“… if a new design is markedly different from anything that has gone before, it is likely to have a greater overall visual impact than if it is ‘surrounded by kindred prior art’ (H.H. Judge Fysh’s pithy phrase in Woodhouse at [58]). It follows that the ‘overall impression’ created by such a design will be more significant and the room for differences which do not create a substantially different overall impression is greater. So protection for a striking novel product will be correspondingly greater than for a product which is incrementally different from the prior art, though different enough to have it own individual character and thus be validity registered.”
“'Under section 226 there will only be infringement if the design is copied so as to produce articles exactly or substantially to the design. Thus the test for infringement requires the alleged infringing article or articles be compared with the document or article embodying the design. Thereafter the court must decide whether copying took place and, if so, whether the alleged infringing article is made exactly to the design or substantially to that design. Whether or not the alleged infringing article is made substantially to the plaintiff's design must be an objective test to be decided through the eyes of the person to whom the design is directed.”
“I derive from those passages that mere (even knowing) assistance or facilitation of the primary infringement is not enough. The joint tortfeasor must have so involved himself in the tort as to make it his own. This will be the case if he has induced, incited or persuaded the primary infringer to engage in the infringing act or if there is a common design or concerted action or agreement on a common action to secure the doing of the infringing act.”