according to the law, check whether the trademark is registrable, whether it is the same as or similar to the previously registered trademark, and whether it violates the prohibition clause of the trademark law. For trademarks that fail to pass the substantive examination, the examiner will notify the applicant in writing and inform him of the reasons for rejection. The applicant may submit a review within the time limit from the date of receiving the notice of rejection, otherwise, the application will be regarded as abandoned, and the application date and application number will not be retained.