generic

Definition from Nolo’s Plain-English Law Dictionary

In trademark law, the status of a word or symbol commonly used to describe an entire type of product or service rather than to distinguish one product or service from another. An example is "raisin bran," used by several manufacturers of breakfast cereals to describe their products. Generic terms can never receive trademark protection because they don't serve the basic function of trademarks to distinguish goods and services in the marketplace. (See also: genericide)

Definition provided by Nolo’s Plain-English Law Dictionary.