What are the requirements for the specification of an application for a patent for invention or utility model?

The attached drawings are used to supplement the text in the specification and are an integral part of the specification. The description may or may not be accompanied by drawings according to the needs of the content. However, the description of the utility model must be accompanied by drawings. The description of the attached drawings in the attached drawings and specifications shall be consistent with the pictures and words. The attached drawings can be basic views, sectional views, schematic diagrams or flow charts. As long as the attached drawings can completely and accurately express the contents of the specification. Complex charts can also be regarded as drawings.

The specific requirements of the attached drawings are as follows:

(1) The specifications of the attached pages are consistent with the specifications, and the format uniformly formulated by the Patent Office shall be adopted.

(2) When the size of the graph is reduced to two thirds, the details in the graph can still be clearly distinguished. However, in order to ensure that the version is centered, the graphics should not be too large. If a piece of paper can't be drawn, it can be divided by cutting lines and drawn on several pieces of paper continuously.

(3) The attached drawings shall be drawn with black drawing ink and drawing tools. Don't draw with pencils, pens, ballpoint pens, etc. Coloring, photos, blueprints or mimeographs are not allowed, but copies can be used.

(4) Graphic lines should be uniform and clear, suitable for copying requirements.

(5) Graphics should be arranged vertically as much as possible. If you want to arrange horizontally, the top half of the diagram should face the left side of the diagram.

(7) There should be no other notes except a few simple words such as water, steam, opening, closing and A-A section in the attached drawings. In general, the size of an object does not need to be indicated in the attached drawings, unless the size of the object is related to the invention itself and needs to be specified in the specification.