Norbert Company has an exclusive right to display a specific symbol and routinely uses it on its promotional materials, company letterhead, and other media to distinguish its company from other firms. This right is referred to as a

Trademark

Explanation:

Norbert company has trademark that symbol and hence has the exclusive right to use it. Any other firm caught using that symbol can be sued. A trademark is any word, symbol or name that a manufacturer uses to distinguish his products from other and trademarks are registered legally and protected by the law against any unauthorized use