How to understand "non-retroactivity" in Article 47 of the Patent Law?

Before the patent right is declared invalid, the judgment and conciliation statement of patent infringement made and executed by the people's court, the decision on handling patent infringement disputes that have been performed or executed, and the patent licensing contract and patent transfer contract that have been performed are not retroactive.

That is, before the invalidation, the patent infringement judgment, conciliation statement, patent infringement dispute settlement decision, patent exploitation license and patent transfer contract that have been performed are all valid.

The new law has just come out, and some judgments have been made in accordance with the old law and are still valid. So understand