National trademark registration can be inquired through the following methods: You can log in to the portal website of the Trademark Office of the Administration for Industry and Commerce of the State Council, follow the steps according to the relevant logo on the webpage, and then you can inquire about the trademark. And trademark inquiries require payment of corresponding fees. Legal basis: Article 22 of the Trademark Law of the People's Republic of China. Applicants for trademark registration shall fill in the product category and product name of the trademark in accordance with the prescribed product classification table, and submit an application for registration.