Legal analysis: China's trademark law stipulates the principle of trademark registration application: 1, and the principle of combining voluntary registration with compulsory registration. 2. The principle of uniqueness. 3. The principle of trademark legality. 4. Examination and announcement of trademark registration applications shall adhere to the principle of priority in application and priority in use. 5. The principle of prohibiting cybersquatting.

Legal basis: Article 19 of the Trademark Law of People's Republic of China (PRC) shall follow the principle of good faith, abide by laws and administrative regulations, and handle trademark registration applications or other trademark matters as entrusted by the principal; Have the obligation to keep confidential the business secrets of the principal known in the process of agency. According to the provisions of this law, if the trademark applied for registration by the client may not be registered, the trademark agency shall clearly inform the client. If the trademark agency knows or should know that the trademark applied for registration by the client has the circumstances stipulated in Articles 4, 15 and 32 of this Law, it shall not accept its entrustment. A trademark agency shall not apply for other trademark registration except agency services.