improper use doctrine

improper use doctrine
The doctrine of patent law, also known as the unclean hands doctrine, which denies the owner of a patent relief against one who supplies unpatented material to a licensee of the patent, although there is an agreement between the patent owner and the licensee that all unpatented materials used in connection with the patent shall be purchased from the patent owner, the latter having no right to exact such an agreement of the licensee. Carbice Corporation of America v American Patents Development Corp. 283 US 27, 75 L Ed 819, 51 S Ct 334.

Ballentine's law dictionary. . 1998.

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