The patent right for invention declared invalid by the Patent Reexamination Board shall be regarded as?

A patent right for invention declared invalid by the Patent Reexamination Board shall be regarded as nonexistent from the beginning. Is that the application failed. Anyone who refuses to accept the decision of the Patent Reexamination Board to declare the patent right invalid or maintain the patent right may bring a lawsuit to the people's court within three months from the date of receiving the notice. The decision to declare the patent right invalid has no retrospective effect on the judgments and rulings of patent infringement made and executed by the people's court before the patent right is declared invalid, the decisions on handling patent infringement disputes that have been performed or executed, and the patent licensing contracts and patent transfer contracts that have been performed.