Adverse possession is a way of obtaining a title to a property, that isn’t commonly seen today. It’s when you possess the property of another person open and notoriously. You’re paying the taxes, potentially, on their land for the proscribed period, which is a seven year period. If you’ve occupied someone else’s property for that period of seven years, and met all the other requirements of adverse possession, for instance you can bring a quiet title action to get the property put into your name under a theory of adverse possession.