Trials and Appeals
Clients say David Oscar Markus is “extraordinary” and that he is “creative and tenacious.” He is “incredibly effective in the courtroom” and “Markus has a national reputation as a trial lawyer.
— Chambers and Partners
Nationally-Recognized Trial and Appellate Law Firm
Markus/Moss is a national trial and appellate boutique brought in when the stakes are at their absolute highest. The Firm tries cases and handles appeals across the country in matters where outcomes are life-altering for individuals and existential for companies.
Known for its courtroom excellence and strategic creativity, Markus/Moss is trusted with the hardest cases, the ones others cannot or will not handle. The Firm is routinely engaged in high-profile disputes, complex investigations, and appeals that demand precision, judgment, and the ability to win before judges and juries.
Founded by David Oscar Markus, a Harvard-educated lawyer described as “wickedly smart and a terrific trial lawyer,” the Firm has built a national reputation for winning the toughest cases.
For the Defense Podcast
David Markus hosts the popular podcast, For the Defense. Listen to the latest episode:
Subscribe for updates on the Firm, the Podcast, and more.
Victories
See more on our Case Summaries page.
United States v. Diego Sanchez (alleged health care fraud case)
After an almost 4 week trial, the jury found Diego Sanchez not guilty on all seven counts of health care fraud and wire fraud in the Southern District of Florida.
United States v. Andrew Gillum (alleged false statement and fraud case).
Jury finds Andrew Gillum not guilty of top count; prosecutors drop remaining counts.
United States v. Tom Grady (environmental case).
Jury finds prominent lawyer/politician not guilty in federal environmental trial.
United States v. Matt Pisoni (alleged wire fraud).
Federal judge orders new trial after we expose prosecutorial misconduct.
United States v. R.G. (alleged bank and mortgage fraud).
Judge finds president of company not guilty in federal mortgage fraud trial.
United States v. Dr. B.G.G. (alleged healthcare fraud).
Federal judge dismisses healthcare case against doctor on Firm’s motion to dismiss.
News
See our News page
for articles and commentary.
News
October 24, 2024
Via David Markus’s LinkedIn: Today was a pretty special day. Margot Moss was in DC being honored as a finalist for the NLJ’s winning litigators.
Recognition
See more on our Recognition page.
The Best Lawyers in America (2026 Edition)
The Best Lawyers in America (2026 Edition) (Miami, Florida) once again recognizes David Oscar Markus, Mona Markus, and A. Margot Moss.
2025 Chambers and Partners Rankings
The firm of Markus/Moss, David Markus, and Margot Moss have all been recognized by Chambers & Partners in 2025.
2025 Best Law Firms — The United States
Best Lawyers has announced their 2025 rankings and Markus/Moss is listed as a Best Law Firm in several categories.
Recent Blog Posts
David Oscar Markus hosts the popular Southern District of Florida blog, which provides news and notes regarding federal practice in the Southern District of Florida.
Here is the latest post:
- Judge Edward B. Davis
Thank you to John and the Federal Bar Association for these wonderful portrait posts. I really enjoy them. This week we have my old boss, Chief Judge Edward B. Davis. I wanted to say a few words about this giant of a man – both literally and […]
FACDL-Miami
Lauren Field Krasnoff has served on the board of the Florida Association of Criminal Defense Lawyers – Miami Chapter since 2015. She was sworn in as President for 2024. Lauren is a partner at Markus/Moss PLLC.