“… the question … is … if the defendant had not infringed the patent would he have carried on a non-infringing business which would have been sustained by the overheads in fact used to sustain the infringement?”
" … Store support centre."
"Consultants, although no further description is provided as to who is covered by this category or why these costs were incurred."
“In my judgment the legal error that the judge made was to ask whether the sale of the panel plus insert would have happened separately rather than to ask himself how much of the profit on the sale was derived from the infringement. In a case in which the infringement does not “drive” the sale it seems to me that it is wrong in principle to attribute the whole of the profit to the infringement. In particular it does not follow from the fact that the customer wanted a slat wall that incorporated an insert, that the customer wanted a slat wall that incorporated the infringing insert. … If the judge had found on the facts that the infringing insert was “the essential ingredient in the creation of the defendant’s whole product” (i.e. the incorporated panel) then he would have been justified, on the facts, in declining to apportion the profit. But I cannot see that he made that finding.”
“… where a single head of profit is attributable to a number of causes, some of them infringing and some of them not, it is necessary and appropriate for the court to conduct an apportionment so as to work out on a broad brush basis what proportion of the profit is due to the act of infringement …”
“A manufacturer sells a car which includes a patented brake. If the car did not have brakes the manufacturer could not have sold it but it did not have to have that particular brake. In those circumstances … it would be unjust to charge the manufacturer with the whole profit made on the car …”