Methods of inquiring expired patents

For the inquiry method of expired patents, the protection of patent rights has a time limit. The protection period of design patents and utility model patents is 10 years, and the protection period of invention patents is 20 years. Then, if the patent expires, what methods can be used to query the expired patent? If you need professional patent services, Bajie Intellectual Property will help you! Bajie's intellectual property business has developed rapidly, focusing on trademark, patent, copyright, domain name and other intellectual property business directions. Bajie's intellectual property patent application and patent transfer agency services have been recognized by the industry. For patent transfer and patent application transaction, please consult Bajie Intellectual Property Customer Service as soon as possible. Methods of inquiring expired patents. Inquire about the legal status of patents through China National Intellectual Property Administration Patent Registry. When granting a patent right, the Patent Office shall establish a patent register. The contents registered in the patent register include: grant of patent right, patent application right, invalidation of patent right, termination of patent right, restoration of patent right, pledge, preservation and cancellation of patent right, filing of patent licensing contract, and compulsory licensing of patent exploitation. The items registered in the patent register are stored in the computer database, printed by the computer when paper is needed, and take effect after being stamped with the special seal of the certificate. The matters recorded in the patent register have legal effect and are protected by law. With the consent of China National Intellectual Property Administration, anyone can consult or copy the relevant contents in the patent register, and request China National Intellectual Property Administration to issue a copy of the patent register. Through the contents recorded in the patent register, we can know whether the patent has expired. Where a copy of the patent register is requested, a fee shall be paid. Inquiry method of expired patents II. Log on to China National Intellectual Property Administration website and use the legal status inquiry function to inquire whether the patent has expired. The legal status information mainly includes: the entry into force of the request for substantive examination, the invalidation of the patent right, the termination of the patent right, the restoration of the right, the right to apply for a patent, the transfer of the patent right, the filing of the patent licensing contract, the pledge, preservation and cancellation of the patent right, the change of the specification and the notice. However, there is a certain lag in retrieving system information, and the real-time and accurate legal status information should be based on the contents recorded in the patent register. Methods of inquiring expired patents. Inquire whether the patent has expired in the invalid patent database of China officially released by Intellectual Property Press. What are the methods to inquire about expired patents? For more detailed intellectual property knowledge and business, you can call Bajie Intellectual Property Online Customer Service. Bajie Intellectual Property is committed to the field of intellectual property, and has been invested by Angel, the founder of Netac Technology, a domestic listed company, and Kingdee International, a Hong Kong listed company.