term:

Likelihood Of Confusion

likelihood of confusion

A statutory basis for refusing registration of a trademark or service mark because it is likely to conflict with a mark or marks already registered or pending before the U.S. Patent and Trademark Office (USPTO). The principal factors considered in determining whether there is a likelihood of confusion are: (1) the similarity of the marks; and (2) the commercial relationship between the goods and/or services listed in the application.

Source: U.S. Patent and Trademark Office