In trademark registration, the "_" symbol and the "TM" symbol represent different meanings and legal status:

1. "_" symbol: The "_" symbol represents registered Trademark (RegisteredTrademark). When a trademark is successfully registered and obtains a trademark registration certificate, the rights holder can use the "_" symbol to indicate that the trademark has been registered and is protected by law. In many countries, only registered trademarks are eligible to use the "_" symbol.

2. "TM" symbol: "TM" symbol represents trademark (Trademark). Trademark rights holders can use the "TM" symbol to express their claim to the trademark before it is registered. The "TM" symbol indicates that the trademark is in use and the rights holder claims to have trademark or commercial identity rights over it. The "TM" symbol can be used before the trademark is registered, or it can continue to be used after the trademark is registered.

It should be noted that the use of "_" symbols and "TM" symbols may differ in different countries or regions, so it is recommended to use these symbols according to the legal regulations and practices of the target country or region. During the trademark registration process, once a trademark successfully obtains a registration certificate, the trademark owner will usually stop using the "TM" symbol and start using the "_" symbol to indicate the registration status of its trademark.

The above content is carefully compiled by Zhubajie.com. I hope it will be helpful to you.