(1) Failing to pay the annual fee as required;
(2) The patentee waives the patent right in writing;
(3) When the patent right expires, the patent right will be terminated.
If the annual patent fee has not been paid or the annual patent fee and late payment fee have been paid in full, a notice of patent termination shall be issued within two months from the date of expiration of the annual patent fee, which shall not be earlier than 1 month, and the patentee shall be notified. Where the patentee fails to start the recovery procedure or the recovery is not approved, it shall register and announce it in the patent register and patent announcement respectively four months after the termination notice is issued. After that, the patent application file is stored in the invalid file database. The expiration date of the patent right is the expiration date of the previous year.
Opinions of Guigang Intellectual Property Lawyer:
Focus on handling the retrial appeal cases of legally effective intellectual property disputes with errors, and adhere to the unique practice concept, the case handling mode of collective case handling system, the safeguard measures of expert argumentation system and the principle of accepting errors to deal with difficult and major disputes in the retrial of the two universities. In line with the creed of professional leadership and honest management, we will act to safeguard the legitimate rights and interests of the parties, so that everyone will no longer be troubled by intellectual property issues and accelerate the pace of building a society ruled by law.