are trademark symbols R and TM interchangeable
Meaning of â¢, Â® and 1  â . â¢ tm for an unregistered trademark, that is, a mark used to promote or brand goods; â  2  sm for an unregistered service mark, that is, a mark used to promote or brand services; Â® 3  r for a registered trademark.rademark symbols â¢. Trademark (also called trade mark) TM, Registered and Service Mark (or servicemark) signs are meaningful popular computer symbols. You can type trademark and registered symbols right from your keyboard.