See if their trademark is marked with the application mark TM, or the successfully registered mark R4.

How to determine whether a merchant is using a registered trademark:

1. It depends on their trademark usage. Generally, companies that use a large number of trademarks will register it.

2. It depends on how long they have been used. Generally, bosses who are aware of long-term trademarks will apply for protection.

3. The most important thing is to see whether their trademark is marked with the application mark TM, or the successfully registered mark R.

4. If you want to know for sure, go to the Trademark Office system to check.