A more thorough explanation:

An investitive fact is a fact that confers rights. This means that it is a fact that gives someone the ability to do something or have something. For example, if someone inherits a house from their parents, that is an investitive fact because it gives them the right to own and live in the house.

Another example of an investitive fact is when someone is granted a patent for an invention. This investitive fact gives them the right to exclude others from making, using, or selling their invention for a certain period of time.

Investitive facts are important in legal proceedings because they can determine who has the right to do something or own something. For example, if two people are fighting over who has the right to a piece of property, the investitive facts will determine who has the legal right to own it.