Legal analysis: Substantive trademark review generally takes nine months. Substantive trademark review is a series of activities that the trademark registration authority conducts to check whether a trademark registration application complies with the provisions of the Trademark Law, conducts data retrieval, analyzes and compares, investigates and studies, and decides to give preliminary approval or reject the application.

Legal basis: "Trademark Law of the People's Republic of China" Article 28 For a trademark applied for registration, the Trademark Office shall examine it within nine months from the date of receipt of the trademark registration application document. If it is completed and meets the relevant provisions of this Law, a preliminary review and announcement will be made.