Maryland Statutes
Subtitle 3 - Unfair, Abusive, or Deceptive Trade Practices
Section 13-312 - Certification in Subpoena in Compliance With 1-304 of the Financial Institutions Article

Any subpoena served on an entity which issues a credit card to a person in this State for information relating to the person’s account shall contain a certification that complies with § 1-304 of the Financial Institutions Article.