What is the result of patent validity declaration? Can I get a refund if the patent is invalid?

First, after the patent effectiveness declaration results are certified, the rights of any patent are not stable. According to the patent law, anyone with justifiable reasons and evidence may apply to the Patent Reexamination Board for invalidation of the patent. This program is invalid patent. It is usually used to defend patent infringement or competitors' business strategies. Because for the former, if there is a legitimate reason, the other party's rights can be eliminated, and the other party's infringement lawsuit becomes unfounded; If there is no justifiable reason, you can also delay the time. For the latter, we can seek market space for a best-selling product. According to the Patent Law, any unit or individual may request the Patent Reexamination Board to declare the patent right invalid if it thinks that the grant of the patent right is not in conformity with the relevant provisions of the Patent Law from the date when China National Intellectual Property Administration announced the grant of the patent right. After accepting the request for invalidation, the Patent Reexamination Board will make three types of decisions after examination: the patent right is invalid, the patent right is partially invalid, and the patent right remains valid. The Patent Reexamination Board shall make a written decision and notify the claimant for invalidation and the patentee after making the decision. After the Patent Reexamination Board has made a decision that the patent right is invalid or partially invalid, if the party concerned does not bring a lawsuit at the expiration of the time limit, China National Intellectual Property Administration will register and announce it; If a party brings a lawsuit to the people's court within the prescribed period of 3 months, it shall be registered and announced by China National Intellectual Property Administration after the judgment of the people's court takes effect. An invalid patent right is regarded as nonexistent from the beginning, that is, it is legally recognized that the patent right is not legally binding from the beginning of authorization. 2. Can I get a refund if the patent right is invalid? Under the following circumstances, even if the patent right is declared invalid, the party concerned may not ask for a refund of the relevant fees: 1. The invalidation of a patent right shall not be traced back to the patent infringement judgment or ruling made and executed by the people's court before the patent right is declared invalid. Before the patent right is declared invalid, the patentee brings a lawsuit to the people's court on the grounds that others have infringed his patent right. If the people's court makes a judgment or ruling on compensation for patent infringement and executes it according to the patent right in force at that time, the judgment or ruling that has been made and executed after the patent right is declared invalid has no retrospective effect. 2. The decision on handling patent infringement disputes made by the administrative department for patent affairs has been fulfilled by the parties concerned, or the administrative department for patent affairs has applied to the court for compulsory execution, and then the patent right is declared invalid, which has no retrospective effect. 3. The invalidation of the patent right shall not be traced back to the implementation of the license contract or patent right transfer contract that has been performed.