Patent legal status refers to the status of a patent application or authorized patent in a certain country such as the type of rights, maintenance of rights, scope of rights, ownership of rights, etc. at a specific point in time. These statuses will directly affect Whether the patent right exists and the scope of the patent right. From the perspective of time and space, the legal status of patents generally includes four aspects: region, time, ownership and scope of protection. Regionality mainly refers to: which countries have applied for patents for a certain patented technology, which countries have not applied for patents, and in which countries it may be protected by patents in the future. Considering time means: what is the protection period of a certain technology in that country, whether it has entered the protection period, and how long is the remaining protection time. The issue of ownership of patent rights mainly refers to: whether the patent rights of a certain technology have been transferred, who are the current patentees, and who is the actual owner of the patent. The scope of patent protection mainly refers to: whether there are subsequent procedures after the patent is granted, and whether the scope of patent protection has changed. Patent query search Patent legal status search refers to the search for the current legal status of a patent or patent application. The purpose is to understand whether the patent application is authorized, whether the patent after authorization is valid, and whether the patentee has changed. and what about other information related to the legal status of the patent. Common legal status search types mainly include: validity of patent rights, expiration of patent rights, patent applications not yet authorized, patent applications withdrawn or deemed withdrawn, patent applications rejected, patent rights terminated, patent rights invalid or partially invalid, and patent Transfer of rights, etc. Among them, patent validity refers to a patent that has obtained patent rights on and before the search date and is still valid. To maintain a valid patent, the patent must not only be within the statutory protection period, but the patentee must also pay annual fees on time in accordance with regulations.