What are the requirements for applying for patent writing?

1. What are the requirements for applying for patent writing? First, the number 1, 2, 3 is directly used as the sorting for the lines that cannot have the name of the application for a patent for invention or utility model at the beginning. The total serial number 1 should be an independent claim, and the subordinate claims should be followed by serial numbers 2 and 3. The independent claim includes a preamble part and a characteristic part. The preface shall include the name of the subject matter for which the invention or utility model requires protection, as well as the necessary technical features and existing technologies of the subject matter of the invention or utility model; The technical features of an invention or utility model that are different from the prior art are written in the feature part, which is the core part of the claim. It is connected with the preamble with "characteristic" or similar expression, which constitutes a complete technical feature to be protected, thus limiting the scope of the invention or utility model. The dependent claim also consists of two parts. First, the citation part, followed by the qualification part, the former indicates the number of the cited claim and its subject name, and the latter defines the technical features in the previous claim. Generally, the phrase "according to claim 1, characterized in that" is used. An invention or utility model may have multiple dependent claims in addition to the independent claims. But only the preceding claims can be cited. When two or more claims are cited at the same time, only the word "or" is allowed, as described in claim 1 or 2. Such claims are called multiple dependent claims. One multiple dependent claim cannot be used as the reference object of another multiple dependent claim. 2. Writing requirements of patent application claims An application claim should have at least one independent claim, but because two or more inventions or utility models with the same concept can be jointly applied, there may be two or more independent claims, which have independent legal significance and are parallel claims, but one of them should be determined as the main claim, which is called the first independent claim. Each independent claim can have multiple dependent claims. Three. Classification of patents Patents are divided into valid patents and invalid patents according to the ownership of the owner. Effective patent Generally, an effective patent refers to a patent that is still in a valid state after the patent application is authorized. In order to make the patent in a valid state, the patent right is still within the legal protection period, and the patentee also needs to pay the annual fee according to the regulations. After the patent application for an invalid patent is authorized, the patent right is lost because the legal protection period is exceeded or the patentee fails to pay the annual fee in time, or the patent is declared invalid by the patent reexamination board after being requested by any individual or unit, which is called an invalid patent. Invalid patents are no longer binding on the use of the technology involved. Patents are divided into three types according to the categories of applications: invention patents refer to new technical solutions proposed for products, methods or their improvements. Patent for utility model: refers to a new technical scheme suitable for practical use for the shape, structure or combination of products. Design patent: refers to a new design based on the shape, pattern or combination of products and the combination of colors, shapes and patterns, which is aesthetic and suitable for industrial application. Due to the development of modern society, patent application has increasingly become an effective way for creators to reasonably safeguard their own rights and interests. During the patent application, you should know the relevant handling materials and matters needing attention in detail. At the same time, after the patent application is successful, it can inform the public, reduce the harm of infringement and ensure the legitimate rights and interests of the original creator.