In patents, some time periods are calculated according to the earliest priority date, and some time periods involve different protection ranges and are calculated according to the priority date of the corresponding priority document.
Priority means that when the technical data are incomplete, the incomplete technical data can be submitted to the Patent Office to obtain the application date, and the technical data can be supplemented to the Patent Office within 12 months to avoid the situation that the applicant is not authorized when others apply for the same or similar technical scheme during this period.