Adverse Possession, Prescriptive Easement
Disputes over property ownership and lot lines often involve issues of adverse possession or prescriptive easement, sometimes called squatters rights. Each state has a particular body of law on this issue and involves a court hearing to establish the Maryland required twenty (20) years of open, notorious, exclusive, hostile and under claim of right adverse use, without permission.
These matters can be difficult. Seek help from experienced counsel before you do anything or your matter may be compromised.