Does a trademark have to be registered to be considered a trademark?

Answer:
No. In the U.S. you get "common-law" rights in a trademark the moment it is first used in commerce in association with your goods or services, but only in the market where you have used it. This means you can use state or federal law to stop infringers. However, a state or federal registration is a valuable tool that can greatly expand your rights and make your trademark easier to enforce. When you see (tm) or (sm) it means the trademark is not registered, � (circle-R) means it is.
First answer by Wutzyerproblem. Last edit by Wutzyerproblem. Contributor trust: 1133 [recommend contributor recommended]. Question popularity: 16 [recommend question].