Stephen Johnson Field

“ Sales of licenses, made at periods years apart, will not establish any rule on the subject and determine the value of the patent. Like sales of ordinary goods, they must be common, that is, of frequent occurrence, to establish such a market price for the article that it may be assumed to express, with reference to all similar articles, their salable value at the place designated. ”

“ The master reported in his first report that the complainants waived all claim for profits arising from the manufacture, use, and sale of the patented machines, and relied upon the proofs as establishing such a fixed royalty or license fee as would furnish a criterion by which to estimate complainants' damages ”

“ That the complainants have not established a title in themselves to the patents; and (2) that they have not proved any damages for the infringement of the claims of the patentee. The first of these grounds rests upon the supposed effect of the assignment executed by the patentee to the complainants on the 6th of October, 1874. The instrument in its words of transfer is amply full and expressive to convey to them his entire interest in and title to not only the patents then issued, but also any renewals or extensions thereof. ”