Md. Code, Business Occupations and Professions § 14–4A–02

(a) Before a professional engineer issues to a client or submits to a public authority any plan, specification, or report, the professional engineer who prepared or approved the document shall endorse on the document the professional engineer’s:

(1) original signature and date of signature; and

(2) seal or a facsimile of the seal.

(b) A public authority may not accept any engineering plan, specification, or report unless the document is endorsed as required under subsection (a) of this section.