Do Trademarks Have to Be Registered?
The small TM letters found beside different names of products it means that there is a pending trademark application in process. If a small R is used, it means the trademark has been registered. The answers to trademark questions can easily be found by Googling that phrase.
Trademarks do not have to be registered. However, if you want to establish your rights, you may want to register your trademark. This will register your ownership and exclusive rights to use your mark nationwide. It also gives you the qualifications to file action in federal court should the need present itself, and to file registration with the U. S. Customs Service. That could prevent foreign goods from infringing on your rights.