This lesson explores the concept of service marks, and the similarities and differences between service marks and trademarks.

This lesson assumes that you have already acquired a basic familiarity with the rules that apply to marks that are used on or in connection with the offering of goods. Specifically, you should be familiar with the types of subject matter that may qualify as marks, the spectrum of distinctiveness, and the standard for determining whether a mark has been used in trade (or, for protection under the Lanham Act, in interstate commerce).