For the trademark applied for registration by the applicant, if the State Trademark Office, after preliminary examination, believes that the trademark applied for registration complies with the relevant provisions of the Trademark Law, it will make a preliminary review and make an announcement. This is the trademark preliminary examination announcement. The trademark preliminary examination announcement period is three months. Trademark law is a general term for the legal norms that confirm the exclusive right to use trademarks and stipulate the registration, use, transfer, protection and management of trademarks. Its main role is to strengthen trademark management, protect the exclusive rights to trademarks, encourage producers and operators of goods to ensure the quality of goods and services, maintain the reputation of trademarks, so as to ensure the interests of consumers and promote the development of the socialist market economy.