The main purpose of patent protection is to encourage technological innovation and invention, and to promote economic development by granting patent rights.
Once an innovation is granted a patent, others have no right to use, produce, sell or import the innovative product or technology without authorization, otherwise it will constitute patent infringement and need to bear corresponding legal responsibilities. Within a certain period of validity, the patentee can authorize, transfer and license the patent according to his own wishes, and obtain economic benefits from it.
Generally speaking, patent is a legal system to protect technological innovation, which can protect the legitimate rights and interests of inventors and promote technological innovation and economic development. Patent, literally, refers to the exclusive right. Letters or official documents, meaning publicity, are the vouchers used by medieval monarchs to issue certain privileges, and later refer to the exclusive rights certificate signed by the British king himself.
In modern times, patents are generally documents issued by government agencies or regional organizations representing several countries according to their applications. This kind of document records the contents of the invention and creation, and in a certain period of time, it has produced such a legal state that under normal circumstances, a patented invention and creation can only be implemented by others with the permission of the patentee.
There are three kinds of patents in China: invention patents, utility model patents and design patents.