Trademark Law
The functionality doctrine is a legal principle in trademark law that prevents the registration of product features that are deemed essential to the use or purpose of the product, as well as those that affect its cost or quality. This doctrine ensures that functional aspects remain available for all competitors to use, thereby fostering competition and innovation in the market. It plays a crucial role when evaluating non-traditional marks such as sound and scent marks, where functionality can complicate their protectability.
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