First, you already know the registration number of the enterprise, and check the enterprise information:

1. First, use the first six digits of the license number to determine the provincial, municipal and district industrial and commercial authorities (which can be verified by the number comparison table, You can also refer to the ID card inquiry system)

2. Then you can inquire about the "enterprise information inquiry system" of the provincial or municipal industrial and commercial bureau network or the "enterprise credit inquiry system" of the government

2. You already know the name of the enterprise and check the enterprise information:

You can directly check it on the industrial and commercial websites of all provinces and municipalities. Generally, it can be found in the "enterprise information inquiry system" of the provincial or municipal industrial and commercial bureau network or the "enterprise credit inquiry system" of the government.

Registered trademarks can directly enter the China Trademark Network for inquiry:

1. First, entering the China Trademark Network, the government provides four services: approximate inquiry of trademarks, comprehensive inquiry of trademarks, inquiry of trademark status and error information feedback.

2. Click to enter the comprehensive trademark inquiry: users can inquire about a certain trademark by means of trademark number, trademark, applicant name, etc.

3. There are five inquiry methods: international classification number, registration number, trademark name and applicant name (in Chinese and English). For inquiring whether to register, just use "commodity name".