Md. Code, Real Property § 13–503

(a) The issuance of a patent operates as a quitclaim of the interest of the State in the land.

(b) The interest of the State does not pass and is not affected until a patent is issued.

(c) A patent issued on a warrant to resurvey land previously patented does not affect or impair any mortgage, deed of trust, easement, right-of-way, or similar interest in the land.