The decision to declare the patent invalid. There is no retroactive effect on the following:
1. Patent implementation license contracts that have been performed before the patent right is declared invalid.
2. Before declaring the patent right invalid, the People’s Court has made and executed a judgment and mediation letter on patent infringement.
3. Patent infringement dispute settlement decisions that have been performed or enforced before the patent right is declared invalid.
4. A patent transfer contract that has been performed before the patent right is declared invalid.