What does the claim of invention patent include and what is its format?

Article 19-22 of the detailed rules for the implementation of the patent law stipulates that

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 technical terms used in the claims shall be consistent with those used in the specification and may be changed.

Learning style or math style, but no illustrations. Unless absolutely necessary, "such as the instruction manual" shall not be used.

The words "as described in the subsection" or "as shown in the figure"

The technical features in the claim can refer to the corresponding marks in the attached drawings of the specification, and these marks should be placed in the stage.

After the technical features should be placed in parentheses, easy to understand the claim. Reference signs should not be interpreted as an essential part of rights.

The limit of seeking.

Article 20 A claim shall have an independent claim and a subordinate claim.

The independent claim shall reflect the technical scheme of the invention or utility model as a whole and record the technology of the solution.

The necessary technical characteristics of the problem.

The dependent claims shall further define the cited claims with additional technical features.

Article 21 An independent claim of an invention or utility model shall include a preamble part and a characteristic part.

Written in accordance with the following provisions:

(1) Preface: indicate the subject name and invention of the technical scheme of the invention or utility model to be protected.

Or the necessary technical features of the utility model theme and the closest existing technology;

(2) Characteristic part: use "characterized by" or similar terms to represent the invention or utility model.

This new model is different from the closest technical feature of the prior art. These features are combined with those described in the preface.

Limit the scope of the invention or utility model.

Where the nature of the invention or utility model is not suitable to be expressed in the way listed in the preceding paragraph, the independent claim may use other ways.

Writing methods.

An invention or utility model shall have only one independent claim and shall be written in the same invention or utility model.

Before the new dependent claims.

Article 22 A dependent claim of an invention or utility model shall include a quoting part and a defining part.

Written in accordance with the following provisions:

(1) citation part: indicate the number of the cited claim and its subject name;

(2) Defined part: indicating the additional technical features of the invention or utility model.

Subordinate claims can only refer to previous claims. Multiple subordinate rights citing more than two claims

A claim can only refer to the previous claim in one way, and cannot be regarded as another subordinate right.

The basis of seeking.