Legal analysis: The applicant should designate and provide a drawing that best illustrates the main technical features of the invention's technical solution as a summary drawing. The drawing attached to the abstract should be one of the drawings included in the description. The size and clarity of the abstract drawing should ensure that when the drawing is reduced to 4 cm × 6 cm, each detail in the drawing can still be clearly distinguished. The abstract may contain the chemical formula that best describes the invention, which is considered a drawing accompanying the abstract.
Legal basis: Article 26 of the "Patent Law of the People's Republic of China" When applying for an invention or utility model patent, a request, description, abstract, claims and other documents shall be submitted. The request shall state the name of the invention or utility model, the name of the inventor, the name and address of the applicant, and other matters. The description shall provide a clear and complete description of the invention or utility model, which shall be subject to the ability of a person skilled in the technical field to realize it; when necessary, there shall be accompanying drawings. The abstract should briefly describe the technical key points of the invention or utility model. The claims should be based on the description and clearly and briefly define the scope of patent protection requested. For inventions and creations that rely on genetic resources, the applicant shall state the direct source and original source of the genetic resource in the patent application document; if the applicant is unable to explain the original source, the applicant shall state the reasons.