Rule 638 A person who exercises acts of ownership over property is presumed to be the owner of it.

If someone acts like they own something, the court will assume they do own it. This means things like using property, maintaining it, selling it, or making decisions about it can all count as "acts of ownership."

This presumption can matter a lot in court cases about who owns something. If you act like a property belongs to you, the other side has to prove that you are not actually the owner. The burden falls on them, not you.