Due to the long period of trademark application and strict trademark examination, if the applied trademarks are the same or similar, the trademark will go through a long examination after submitting the application. If the examination fails, the trademark will be rejected. Rejection and re-registration take the same route, but it takes time and money. In order to avoid trademark rejection in the process of trademark application, inquiry before trademark registration is an essential link. Trademark law does not stipulate that trademark registration must be made by trademark inquiry. However, we still suggest that we should do a good job of inquiry before applying for trademark registration. But the query does not guarantee that the query result is the result confirmed by the Trademark Office.