Patent drawings should be numbered sequentially with Arabic numerals and marked directly below the corresponding drawings.
Explanation of patent drawings: Pictures attached to the description of a patented invention to help explain the content of the invention. In order to facilitate the public's understanding and implementation of the technical features of the invention, the applicant may attach one or several drawings to the description, including schematic diagrams, circuit diagrams, illustrations or process flow charts, etc. The names and functions of each component in the drawings should be described in the description in the form of text. The drawings may be in the form of basic views, oblique views, or cross-sectional views.
The size and clarity of the attached drawing should ensure that when the drawing is reduced to 2/3, each detail in the drawing can still be clearly distinguished. Reference signs used in the same application shall be consistent. Signs not mentioned in the description of the invention or utility model shall not appear in the drawings. Drawings should contain no annotations other than necessary words.
According to Article 33 of the Patent Law, the applicant’s modifications to the application documents shall not exceed the scope recorded in the original description (including drawings) and claims. In other words, all modifications must not add content, otherwise it will exceed the scope of the original instructions and other records. This needs to be based on the completeness of the application documents. If the application documents are incomplete, you will be notified of supplementary materials, and the application date will be changed to the date when the supplements and corrections are submitted or mailed.