Maryland Code, Commercial Law § 16-203

(b)(1)(i) Except as provided in subparagraph (ii) of this paragraph, within 30 days after the creation of a lien under this subtitle, including a lien created under § 16-207(c) of this subtitle, the lienor shall send notice of the lien by registered or certified mail to all holders of perfected security interests in the property who:

1. Are known to the lienor; or

2. Can be identified through a search of the public records where filings are made to perfect security interests in the property.

(ii) For a lien created under § 16-202(b) of this subtitle, the lienor shall send the notice required under subparagraph (i) of this paragraph within 45 days after the creation of the lien.

(2)(i) Subject to subparagraph (ii) of this paragraph, the notice required under paragraph (1) of this subsection shall be sent to the address shown on the document that creates or otherwise gives notice of the perfected security interest.

(ii) For a lien created under this subtitle in a motor vehicle registered in this State, the notice required under paragraph (1) of this subsection may be sent to the addresses of all holders of perfected security interests in the motor vehicle that are listed in the certified records issued to the lienor by the Motor Vehicle Administration.