
Miami, FL 33128
Phone: (305) 379-6667, Fax: (305) 379-6668

Markus/Moss is a nationally-recognized trial and appellate boutique law firm.
Markus/Moss is a nationally-recognized trial and appellate boutique law firm known for taking on and winning difficult criminal defense cases. The Firm’s lawyers are tenacious courtroom advocates who accept only a small number of high-stakes cases at any given time so that they can dedicate their full attention to every client. The Firm’s founder, David Oscar Markus, is a Harvard-educated lawyer who has been described as “wickedly smart and a terrific trial lawyer.” His clients say that he is “the whole package” and “a creative, courageous and tenacious courtroom advocate.”
The Firm (formerly known as Markus & Markus) handles a wide variety of criminal defense matters, with an emphasis in representing businessmen and professionals in federal white-collar prosecutions and appeals including criminal antitrust, tax fraud, mortgage fraud, Medicare fraud, securities fraud, OFAC violations, and RICO cases. Markus/Moss also has been widely recognized for its successful and creative work in state and federal courts on drug and other non-white collar cases. To learn more, please click here.
We specialize in white collar criminal defense cases and handle only a very small number of cases at any given time so we can dedicate our full energy to each and every case we take. See how Markus/Moss has helped our clients.
News, Articles and Recent Blog Posts
Best Lawyers lists Markus/Moss and lawyers for 2020
Best Lawyers 2020 has made the following awards:
Markus/Moss: Top Law Firm for Criminal Defense
David Oscar Markus: Lawyer of the Year, White Collar Criminal Defense
Margot Moss: White Collar Criminal Defense and General Criminal Defense
Mona Markus: Appellate Practice and White Collar Criminal Defense

Chambers and Partners recognizes Markus/Moss and its lawyers
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From the Chambers USA guide
What the team is known for Boutique litigation firm specializing in white-collar criminal defense issues and frequently involved in trial and appellate work. Handles criminal cases across the spectrum and particularly excels in antitrust, securities and mortgage fraud. Maintains a fine reputation for its work in the healthcare and pharmaceutical arenas.
Strengths Clients observe: “The firm is outstanding. Everyone plays to their strengths and it shows in the courtroom.”
Notable practitioners
David Markus is highly regarded by peers and clients alike for his representation of individuals in white-collar criminal litigation. One client comments: “David Markus is amazing, not only because of the strength and genius of his arguments and motions, but also because of his brilliant and astonishing performances during the hearings. Additionally, he radiates so much confidence, and that in itself soothes the usual anguish and anxiety that you endure during these types of situations. Last but not least, he is such a great human being.”
Other notable practitioners: Margot Moss
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David Oscar Markus speaks at Harvard Law School
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David Oscar Markus is a frequent speaker and lecturer. Recent examples include:
–introducing Professor Alan Dershowitz at the ABA White Collar Conference to over 1,000 lawyers from around the country.
–speaking on successful strategies for filing pre-trial motions at the ABA White Collar Conference.
–presenting the “kids case” at his 20-year Harvard Law School reunion:
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Firm Profile
Markus/Moss is a nationally recognized trial and appellate boutique law firm that is known for taking on very difficult cases and winning. The Firm handles a very small number of cases at any given time so that it can dedicate its full energy to each and every case it takes. Learn more.
Attorney Profiles
David Markus has successfully represented defendants in high-stakes litigation at the trial level all the way to the Supreme Court. Meet the attorneys at Markus/Moss.
Contact Us
Markus & Markus PLLC focuses on criminal defense representation at the trial and appellate level. To reach us, fill out and submit the form below.
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Office Location
Markus/Moss
40 NW Third Street
Penthouse One
Miami, FL 33128