Can I change it after filing a patent application? For example, three months after the application is announced and released.

Can I change it after filing a patent application? If it is 1 three months after the application, publication and publication, if you apply for a patent for utility model or design, you can modify it at the time of application and publication, but not after publication. Because of these two patent applications, publication means authorization. Where an applicant applies for a patent for invention, it may be changed from application to publication, and from publication to authorized announcement. 2. You can try cross authorization. The premise of applying for compulsory is that you can't negotiate with the patentee directly. (Dobitch is right. ) Maybe what the landlord wants to ask is the question of active revision, and the timing of active revision is: application for patent for utility model and design: within two months after submitting the application. Application for a patent for invention: within three months after the request for substantive examination is made and the notice of entering the substantive examination procedure is received.