1. It takes about 30-36 months for an invention patent to be granted.
The whole process includes five stages:
The first stage: the acceptance stage is within one month from the date of application;
The second stage: the preliminary examination time is about 18 months from the start date to the application date;
The third stage: the publication stage starts about 18 months after the application date (you can apply for early publication);
The fourth stage: the actual trial period is about 36 months from the start date to the application date;
The fifth stage: the authorization stage is about two months after the applicant receives the authorization notice;
The validity period of the invention patent is 20 years;
Patent Inquiry and Patent Application For more details about the fees and procedures of invention patents, please refer to www.sz-py.com.