What is the process review of invention patent application? Introduction to patent examination

What is the process review of invention patent application? Patent Examination How long is the substantive examination time for the imported invention patent? We will have a waiting period when applying for a patent. Why? Because the patent examination is under way at this time, do you want to know what the process examination of the invention patent application is like? See why we have to wait so long. After all, you don't have to worry about the follow-up after passing the audit. The examination content of the invention patent application process includes five stages: acceptance stage, preliminary examination stage, publication stage, actual examination stage and authorization stage; 1. Time for accepting invention patents: about 1 month; The applicant has obtained a notice of patent acceptance; If you file an application for a patent electronically, you can generally get the application date and application number on the second day of the filing date. Process: the applicant applies for a patent, and the patent office accepts it (obtaining the application date and application number). The patent office issued a notice of patent acceptance. The applicant shall pay the application fee (within 2 months from the date of application). The Patent Office classifies patent cases and enters the preliminary examination stage. 2. Time for publication of the preliminary examination of the invention patent: the legal publication time is 18 months after the application date; Process: the invention patent passes the preliminary examination, (if it is unqualified, the Patent Office will issue a notice of correction, and the applicant will complete the correction and defense within the prescribed time limit). The patent will enter the publication stage (18 months later, if the applicant proposes to publish it in advance, it will take about 6 months); The applicant's advance announcement is voluntary and does not need to pay the advance announcement fee; If you are worried that your technology will be seen by others too early, you don't have to announce it in advance; The advantage of early publication is that the patent can enter the real trial stage as soon as possible.