(1) has a huge number and a wide range of contents.
(2) Integrating technical, legal and economic information. Patent documents record technical schemes, determine the scope of patent protection, and disclose legal information such as changes in the rights of patentees and registration certificate owners. At the same time, according to the geographical distribution of patent application and authorization, we can analyze the sales scale, potential market, economic benefits and international competition scope of patented technology. This is a unique comprehensive information source of science and technology.
(3) reflecting new scientific and technological information. First of all, patent offices in most countries adopt the principle of first application, which enables applicants to submit their applications as soon as possible after the invention is completed to prevent others from getting ahead of them. Secondly, because novelty is the primary condition of patentability, inventions are published in the form of patent documents rather than other scientific and technological documents. Third, the implementation of the early disclosure system of patent applications in the early 1970s accelerated the dissemination of scientific and technological information to the society.
(4) Unified format and standardized form.