Mark W. Brennan

Mark W. Brennan

Washington, D.C.

Email mark.brennan@​

Phone +1 202 637 6409

Fax +1 202 637 5910

Practice groupGlobal Regulatory

Clients across industry sectors seek Mark Brennan's practical advice on cutting-edge communications and privacy issues. An experienced advisor, Mark is as comfortable assisting clients on FCC and FTC policy and enforcement as he is providing actionable compliance strategies to operations teams. He receives dozens of requests each year to share his insights on consumer protection issues at industry conferences and is most well-known for obtaining significant victories for clients on Telephone Consumer Protection Act (TCPA) issues.

Mark's clients include leading online and e-commerce companies, wireless carriers, global telecommunications providers, "Internet of Things" pioneers and app developers, and other technology vendors, as well as a diverse set of international clients from the transportation, financial services, education, and health care sectors.

In addition to his TCPA and telemarketing experience, Mark helps clients on other privacy and data security matters, including Section 5 of the Federal Trade Commission Act, the FCC's Customer Proprietary Network Information (CPNI) rules, CAN-SPAM, the Video Privacy Protection Act, the Children's Online Privacy Protection Act (COPPA), state data breach statutes, and more. He also regularly counsels clients on issues relating to mobile marketing, location-based services, and online behavioral advertising.

An intern at the FCC when Janet Jackson's wardrobe became front-page news, now Mark's international telecommunications practice encompasses licensing and regulatory requirements, transaction approvals, and consumer protection issues. He counsels clients on a variety of communications and spectrum policy issues, including FCC auctions, net neutrality, equipment authorization, IP transition, and E-911.

Awards and recognitions


Telecommunications Rising Star, Top Attorneys Under 40


Media, Technology, and Telecoms: Telecoms and Broadcast: Regulatory, Leading Lawyer
Legal 500 US


Media, Technology, and Telecoms: Telecoms and Broadcast: Regulatory
Legal 500 US

2014, 2017

Media, Technology, and Telecoms: Technology: Transactions
Legal 500 US


Rising Star, Communications
Washington, D.C. Super Lawyers


Best Lawyers Under 40
The National LGBT Bar Association

Education and admissions


J.D., Georgetown University Law Center, 2005

B.S., University of Florida, summa cum laude, 2002


Board Member, Sitar Arts Center

Board Member, Washington Area Lawyers for the Arts

Co-chair, Mobile Payments Committee, Federal Communications Bar Association

Member, International Association of Privacy Professionals

Past Board Member, National LGBT Bar Association

Past Chair, Charity Auction Committee, Federal Communications Bar Association

Past Co-chair, Social Media, Membership & Marketing Committee, Federal Communications Bar Association

Past Co-chair, Transactional Practice Committee, Federal Communications Bar Association

Past Co-chair, Young Lawyers Committee, Federal Communications Bar Association

Past Executive Committee Member, Federal Communications Bar Association

Bar admissions and qualifications

District of Columbia


Court admissions

U.S. Supreme Court

Related Knowledge


Representative experience

Obtained a first-of-its-kind exemption from the TCPA consent requirements for the Cargo Airline Association.

Represented the American Association of Administrative Healthcare Management in obtaining a TCPA exemption for healthcare treatment calls.

Represented United Healthcare obtaining TCPA relief from the FCC for calls to reassigned wireless numbers.

Represented CARFAX in obtaining a waiver of the FCC's fax advertisement opt-out rules.

Represented UnitedHealth Group Incorporated in obtaining a waiver of the FCC's fax advertisement opt-out rules.

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