Article 19 The patent claim shall record the technical features of the invention or utility model.
Where there are multiple claims in the claims, they shall be numbered with Arabic numerals.
The scientific and technological terms used in the claims shall be consistent with those used in the specification, and may have chemical formula or mathematical formula, but no illustrations. Unless absolutely necessary, the words "as described in the manual" or "as shown in the figure" shall not be used.
The technical features in the claim can refer to the corresponding marks in the drawings of the specification, and these marks should be placed in brackets after the corresponding technical features to facilitate the understanding of the claim. Reference signs shall not be construed as limiting the claims.
Article 121 All kinds of application documents shall be typed or printed in black with neat and clear handwriting and shall not be altered. The attached drawings shall be drawn with drawing tools and black ink, and the lines shall be uniform and clear, and shall not be altered.
The request, specification, claims, drawings and abstract shall be numbered in Arabic numerals respectively.
The text of the application documents shall be written horizontally. Paper is confined to one side.