No. The preliminary examination of the invention patent mainly involves a formal examination of the application documents, including the examination of the format, content, additional documents, etc. of the application documents. The substantive examination is to examine the technical content of the invention patent application, mainly to check whether the applied invention meets the requirements of the patent law, such as innovation, implementability, practicality, etc. Therefore, the preliminary examination and substantive examination of invention patents require different professional knowledge and skills and are usually conducted by different examiners.