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(Dys)Functionality, Mark Mckenna
(Dys)Functionality, Mark Mckenna
Journal Articles
The functionality doctrine serves a unique role in trademark law: unlike virtually every other doctrine, functionality can trump consumer confusion (or so it seems, at least in mechanical-functionality cases). In this sense, functionality may be the only doctrine in trademark law that can truly be considered a defense. But despite its potential power, the functionality doctrine is quite inconsistently applied. This is true of mechanical functionality cases because courts differ over the extent to which the doctrine focuses on competitors’ right to copy unpatented features as opposed to their need to copy. And aesthetic functionality cases are even more scattered: …