The defendant sold chemicals to be used by the purchaser in infringement of patent and agreed to indemnify the purchaser if the patent should prove to be valid.
Held: Only the person who actually manufactures or sells infringing goods is the infringer except where the direct infringer is the ‘mere cat’s-paw’ of someone else.
Mellish LJ said: ‘Selling materials for the purpose of infringing a patent to the man who is going to infringe it, even although the party who sells it knows that he is going to infringe it and indemnifies him, does not by itself make the person who so sells an infringer. He must be a party with the man who so infringes and actually infringe.’
Judges:
Sir George Jessel MR, Mellish LJ
Citations:
(1879) 48 LJ Ch 770
Jurisdiction:
England and Wales
Cited by:
Cited – Unilever Plc v Gillette (UK) Limited CA 1989
Unilever claimed infringement of its patent. The court was asked whether there was a good arguable case against the United States parent company of the existing defendant sufficient to justify the parent company to be joined as a defendant and to . .
Cited – MCA Records Inc and Another v Charly Records Ltd and others (No 5) CA 5-Oct-2001
The court discussed the personal liability of a director for torts committed by his company: ‘i) a director will not be treated as liable with the company as a joint tortfeasor if he does no more than carry out his constitutional role in the . .
Cited – CBS Songs Ltd v Amstrad Consumer Electronics Plc HL 12-May-1988
The plaintiffs as representatives sought to restrain Amstrad selling equipment with two cassette decks without taking precautions which would reasonably ensure that their copyrights would not be infringed by its users.
Held: Amstrad could only . .
Cited – PLG Research Ltd and Another v Ardon International Ltd and Others ChD 25-Nov-1994
A patent infingement claim was met by the assertion that the material covered had been disclosed before the patent had been obtained. The court was asked as to the test of whether the information in a claim had been disclosed. Aldous J said: ‘Mr. . .
Lists of cited by and citing cases may be incomplete.
Intellectual Property, Torts – Other
Updated: 15 August 2022; Ref: scu.230357