Su Min Packaging has the answer for you:

According to the provisions of the "Regulations on the Implementation of the Trademark Law", when using a registered trademark, you can mark " "Registered Trademark" or registered mark. Registration marks include ○Note and ○R. When using a registered mark, it should be marked on the upper right corner or lower right corner of the trademark. It can be seen that ○R is a registered trademark mark, which means that the trademark has been approved for registration. What this regulation says is that "may" be marked. Therefore, whether to mark a registered mark on a registered trademark is the right of the registered trademark owner. He may or may not mark it. This is different from the previous regulations that "should" mark it. Differentiated. However, generally companies that are good at using intellectual property strategies will mark their trademarks with registered trademark marks to indicate their rights. In recent times, many large domestic and foreign companies have replaced their new trademarks and carried out advertising. However, in comparison, foreign companies are more active and more particular about marking registered trademarks than domestic companies.

TM is the abbreviation of TRADE MARK, which literally means "commercial mark" when translated. It is generally called a "trademark", but this "trademark" is different from the registered trademark indicated by ○R. TM represents an unregistered trademark. There are several meanings here. First, this logo is used as a "trademark", not a product name, product decoration, or advertising term; second, this trademark is an unregistered trademark. There may be different situations: one is that a registration application has been submitted for this trademark and is waiting for registration approval; one is that no application has been submitted, that is, it is used as an unregistered trademark, and a registration application may or may not be submitted in the future. If a registration application has been submitted, the unregistered trademark marked with the TM mark may be approved for registration, and the TM mark can be changed to ○R later; or it may not be approved for registration, and the ○R mark cannot be marked, otherwise it will constitute passing off. The act of registering a trademark.

The TM mark represents an unregistered trademark, and our country’s law only protects registered trademarks. However, the author still recommends that companies mark it when using unregistered trademarks. This can become evidence of the company’s “use” of the trademark. Enterprises may use it when encountering trademark disputes or other trademark matters.

Of course, the use of unregistered trademarks cannot violate relevant laws and regulations. If the use of unregistered trademarks infringes on the exclusive trademark rights of others, you will still be held legally responsible.