What if the patent expires? How did expired patents come into being?

Patents are accompanied by expiration from the beginning, because the essence of patents is to exchange publicity for monopoly, and when the protection time of patents comes, it will also be the beginning of revealing secrets, so expired patents will naturally occur, so what should we do if we have expired patents? How did expired patents come into being? Let us tell you the answer. What if the patent expires? What is an expired patent? The so-called expired patent generally refers to the patent that has not been approved and has been authorized but has been declared invalid or lost its patent right and is no longer protected by the patent law for various reasons stipulated by law. Expired patents become a kind of free social public resources and naturally become well-known public resources. How did expired patents come into being? 1. Patents have exceeded the time limit stipulated in the Patent Law: the protection period of invention patents in China is 20 years, and the protection period of utility models and designs is 10 year. After the expiration of its effective protection, the patent no longer enjoys the exclusive right granted by the patent law, and falls into the well-known technical field, and the public can use it for free. 1985 patent law has been implemented for more than 20 years, and the patents applied for in the early stage have basically passed the time limit and become expired patents. 2. The patentee terminates the patent right in advance. The main reasons for the patentee's early termination are as follows: the original invention was found to be not advanced enough, it was not implemented after applying for a patent, it was replaced by better technology, and it lost its meaning of existence, so it was forced to give up the patent and became an expired patent; The applied patent itself lacks market development value, so there is no need to keep the patent; Difficulties in patent implementation: it cannot be implemented by itself or transferred. At the same time, I have to pay the patent fee every year, which is too heavy, so I gave up the patent right. The way to voluntarily give up includes not paying the annual fee according to the regulations; The patentee waives his patent right in writing. Patent annual fee, also known as patent maintenance fee, refers to the fee paid by the patentee to the patent management authority from the year when the patent right is granted in order to maintain the validity of the patent right. This is the obligation of the patentee according to law. The right of abandonment is a right enjoyed by the patentee according to law. Since then, the patented technology has become an expired patent and entered the public domain, and anyone can use it free of charge. Generally speaking, the technology that the patentee gives up his patent right in writing is about to be replaced or eliminated, and it has little development and utilization value.