A more thorough explanation:

Definition: Prender is the legal right to take something before it is offered.

For example, if a person has prender over a piece of land, they have the right to take possession of it before anyone else can claim it.

Another example could be a company having prender over a new product idea, allowing them to secure the rights to it before anyone else can.

These examples illustrate how prender gives someone the advantage of being able to claim something before others have the chance to.