substantial identity
Defined in 1 dictionary — Case Law
Definitions from Case Law
From 280 U.S. 30 - Sanitary Refrigerator Co. v. Winters · 1929Most cited · 1,185 citing opinions
There is a substantial identity, constituting infringement, where a device is a copy of the thing described by the patentee, 'either without variation, or with such variations as are consistent with its being in substance the same thing.