Here are relevant Maryland opinions involving the Telephone Consumer Protection Act, 47 U.S.C. Sec. 227:

• Maryland Court of Special Appeals – Jan. 22, 2009 Opinion – Powers v. Dupree – 17 page PDF - Holding that a consumer may obtain $500 statutory damages under both the federal and Maryland TCPA for the same unsolicited fax advertisement.
• Maryland Court of Special Appeals – Nov. 18, 2009 Opinion – AGV Sports Group, Inc. v. Toppings Pizza, Inc. – 43 page PDF – Holding that  individuals and corporate officers may be personally liable for violations of the TCPA.
• Maryland Court of Special Appeals – reported Opinion – Worsham v. Fairfield Resorts, Inc., 188 Md.App. 42, 981 A.2d 24 (Sep. 30, 2009) – 17 page PDF – Maryland appeal court holding that the statute of limitations under the federal TCPA is 4 years.
• Worsham v. Fairfield Resorts Inc., 188 Md.App. 42, 981 A.2d 24 (Sep. 30, 2009) – Text Version of MD Opinion holding that the TCPA statute of limitations is 4 years.