What does the real trial mean in patent examination?

Legal analysis: the actual trial is a substantive review. The substantive examination procedure of an application for a patent for invention is initiated mainly based on the applicant's request for substantive examination. In order to start the substantive examination procedure, the applicant shall make a formal substantive examination request within 3 years from the date of filing an application or claiming priority in China. If no substantive examination is requested during this period, the application will be deemed to be withdrawn.

Legal basis: Article 30 of the Patent Law of People's Republic of China (PRC). Where an applicant claims the priority of a patent for invention or utility model, he shall make a written statement at the time of application and submit a copy of the first patent application document within 16 months from the date of the first application. Where an applicant claims the priority of a design patent, he shall make a written statement at the time of application and submit a copy of the first patent application document within three months. Where the applicant fails to submit a written statement or a copy of the patent application documents within the time limit, it shall be deemed that the priority has not been claimed.