1. Choose trusted official agencies, government agencies or certification platforms, such as intellectual property offices, trademark offices or judicial departments, to obtain accurate and reliable information.

2. Go to the official website of the target institution or platform and look for functions or services related to signature name screening. For example, some intellectual property office websites provide trademark search functions to check whether similar signature names have been registered or used.

3. According to the requirements of the website, enter the signature name to be queried and search or query. Additional information is required, such as the name of the registrant, trademark category, etc.

4. The system will return the query results, including whether the signature name has been registered or used, and relevant screening records or documents.