1. The application date for trademark registration shall be based on the date when the Trademark Office receives the application documents. Of course, if there is a postmark on the email, it will be based on the date on the postmark, not the date on which the Trademark Office receives the application documents. 2. A started using the "Jianhua" trademark on March 1, 1999, and B started using the same trademark on April 1 of the same year. Both A and B sent application documents for registering the "Jianhua" trademark to the Trademark Office on May 1, 2000. However, A's application documents were sent on May 8, and B's documents were sent on May 5. So whose application should the Trademark Office initially review and announce? This means that the Trademark Office will accept B’s trademark application and reject A’s trademark application. However, since A used the trademark first, as long as A provides proof of first use of the trademark, A can apply to the Trademark Office again, and attach a copy that can prove that A used the trademark first, and B is a malicious preemptive registration. It is enough for the bureau to file an application to cancel Party B’s trademark