What are the documents of the patent application for invention and utility model?

China's patent law stipulates that when an invention or utility model applies for a patent document, it shall submit a request, specification, drawings, claims and other documents. (1) The request is a written document that the applicant requests the patent administration department to grant the invention or utility model patent right. (2) Description and drawings. A specification is a document that records the technical content of an invention or utility model in detail. If there are any attached drawings, please explain them. The attached drawings are used to supplement the text in the specification, so that the public can intuitively understand each technical feature and overall technical scheme of the invention or utility model. (3) The patent claim is a written document that the applicant requests the patent administration department to confirm the scope of protection of invention and creation. (4) The abstract of the specification is a summary of the contents disclosed in the specification, and shall specify the name, technical field, technical problems to be solved, main technical features and uses of the invention or utility model.