What do you mean the patent is invalid? How did invalid patents come into being?

What is an invalid patent? What do you mean the patent is invalid? How did invalid patents come into being? Today, Bian Xiao, Bajie Intellectual Property, gives you a detailed answer: What does invalid patent mean? How did invalid patents come into being? What is an invalid patent? What do you mean the patent is invalid? Invalid patent generally refers to an invention or patent that has not been authorized or lost due to various reasons stipulated by law and is no longer protected by patent law. How did invalid patents come into being? The first reason is that the documents of patent application do not meet the requirements of preliminary examination. After the patent application is accepted, China National Intellectual Property Administration will review the application procedures and application documents. If the application documents do not meet the requirements and the applicant fails to make corrections within the specified time limit, the patent application shall be invalid. The second reason is that the patent applicant does not require substantive examination of China's invention patents, and besides preliminary examination, substantive examination is also needed. If the applicant does not request substantive examination, the patent will be invalid. The third reason: the patentee failed to pay the annual fee. After a successful patent application, you need to pay an annual fee. Failure to pay on time without justifiable reasons is regarded as a waiver of the patent right and has become an invalid patent. Reason 4: After the expiration of patent protection, the patentee no longer enjoys exclusive rights. The protection period of invention patents in China is 20 years, and both utility model and design patents are 10 years.