What is patent evaluation? What are the characteristics of patent evaluation? When we do patent inquiry, if we see that other people's patented technology is the same as our application, then you can only use it with the permission of the patentee according to law, that is to say, we have to evaluate the applied patent in advance, so what is patent evaluation? What are the characteristics? Let's summarize it for everyone. What is patent evaluation? What are the characteristics of patent evaluation? 1. exclusivity, that is, exclusivity, means that no unit or individual can exploit its patent within a certain period of time and area without the permission of the patentee, that is, it is forbidden to manufacture, use, promise to sell, sell or import its patented products or use its patented methods or manufacture, use, promise to sell, sell or import its patented products for production and business purposes. 2. Regionality means that patent right is a right with limited geographical scope, that is, it is only valid in the area under the jurisdiction of law. Except in some cases, according to the international conventions for the protection of intellectual property rights and the recognition by individual countries of the validity of the patent right approved by another country, the technological invention is granted the patent right applied for by that country, and it is only valid within the scope of the patent-granting country, and it is not legally binding on other countries, and other countries do not undertake any protection obligations. However, the same invention can be patented in two or more countries at the same time, and its invention can be protected by law in all applicant countries after being approved. 3. Timeliness means that a patent is only valid within the time limit prescribed by law. In other words, after the effective protection period of the patent right ends, the patent right enjoyed by the patentee itself will be automatically lost and generally cannot be renewed. Article 33 stipulates that the term of validity of patent protection shall not be less than the end of the twentieth year from the date of application.