Md. Code, Fam. Law § 5-3B-26
Current with changes from the 2024 legislative session from Chs. 2 through 1049, effective on or before 6/1/2024
If a petition to invalidate an order under this subtitle on the basis of a jurisdictional or procedural defect is filed more than 1 year after entry of the order, a court shall dismiss the petition.
Md. Code, FL § 5-3B-26