Weinberg's expertise encompasses a broad spectrum of complex legal issues.
  • 2019 - Reversal of federal conviction in Puerto Rico of a business executive for bribery with the Court of Appeals ordering the entry of a judgment of acquittal, US v Bravo-Fernandez

    • Principal lawyer in successful, ground-breaking challenge to the Department of Justice’s 20 year history of seizing the content of emails through secret subpoenas to Internet Service Providers in circumvention of the Warrant Clause of the Fourth Amendment, United States v Warshak
  • Trial acquittals in recent political corruption case where the advisor for the Massachusetts Speaker of the House was charged and found not guilty by a jury in the DiMasi-Vitale trial
  • Trial acquittals in recent federal white collar racketeering conspiracy, tax evasion conspiracy, and money laundering trials for business executives and practicing attorneys
  • 2013 Court of Appeals reversal of federal public corruption conviction in Puerto Rico based on proof of gratuties but not bribery, United States v Bravo
  • Successful defenses of doctors, trial lawyers, hospital executives, CEOs of companies, and alleged organized crime leaders in a myriad of challenging cases over the past 40 years in eight federal courts of appeals and over 20 federal district courts from California and Florida to New England and New York
  • Appellate reversals in recent federal honest services case involving a hospital CEO accused of bribing a state politician and a business executive charged with money laundering
  • Representation of over 100 attorneys in matters including disqualification challenges, motions to quash grand jury subpoenas, contempt proceedings, and federal criminal prosecution for money laundering and obstruction of justice
  • Member of the Merit Selection Panel of the United States District Court for the District of Massachusetts regarding the appointment of a United States Magistrate Judge (1999-2000)

A Legal Leader

 “The No. 1 Lawyer in the City.”

—Howie Carr, Boston Herald, 6-16-11

“Marty Weinberg…[part of a] Fourth Amendment dream team [who] understands the Constitution and the Bill of Rights still reign as the supreme law of the land.”

NACDL President Jim Lavine, 12-15-10
upon 6th Circuit ruling that protected emails
from warrantless government surveillance

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Groundbreaking Opinion

“The extension of the Fourth Amendment to emails is a groundbreaking opinion that is of pivotal importance in terms of protecting privacy in the Internet Age.”

—Weinberg quoted by AP following Warshak decision


“[Warshak] … may someday be seen as a watershed moment in the extension of our Constitutional rights to the Internet.”

— Law Professor Paul Ohm

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Savvy, Peerless

“Known for his savvy handling of high-
profile, white-collar crime and tax cases.”

— Boston Globe, 5-29-04
(upon Weinberg joining
Martha Stewart appellate team)

“Peerless”   “Elegant”

— Peter Gelzenis
Boston Herald, 5-6-11
in its coverage of his successful
defense of Richard Vitale