Whether the writing of the application documents meets the requirements;
Whether the modification of the document exceeds the legal limit;
Whether the applicant's qualification is legal, and whether the foreign applicant has entrusted a legal agency to handle the patent application;
Whether the utility model or design violates the law, social morality or hinders the public interest, and whether it is an invention-creation that does not enjoy patent protection;
Whether the application meets the requirements of oneness;
Whether there is the possibility of repeated authorization;
Whether it is a post-applicant of two identical utility model or design patent applications, etc.