Daniel Ruzumna is a Partner in the Firm’s Litigation department and Co-Chair of its White Collar Defense and Investigations group. Mr. Ruzumna is also a member of the Firm’s False Claims Act and Whistleblower Defense Team. He has extensive trial and appellate experience, having served as lead counsel in numerous jury trials and arbitrations and having briefed and argued nearly a dozen cases before federal and state courts of appeal.

Mr. Ruzumna's practice focuses on the areas of white collar criminal defense and related regulatory proceedings, internal investigations, asset forfeiture proceedings, and complex financial litigation. He has represented corporations and individuals in many recent high-profile criminal and regulatory investigations involving alleged violations of the securities laws, antitrust laws, tax laws, and Foreign Corrupt Practices Act. Mr. Ruzumna regularly conducts confidential investigations on behalf of clients, including a professional sports league, higher education institutions, financial firms, and life sciences companies. He has also represented private equity, telecommunications, and not-for-profit clients in complex financial litigation and international arbitrations. His extensive trial experience has earned him a “Litigation Star” for New York recognition by Euromoney Institutional Investor PLC’s Benchmark Litigation, and he has been recognized by Chambers USA in the area of white-collar criminal defense and investigations. The guide notes that Mr. Ruzumna “earns praise for his ability to handle both criminal and civil disputes.” Clients describe him as “very smart, extremely thorough, and passionate about the matters he works on.” Mr. Ruzumna has also been named by Super Lawyers in the area of Criminal Defense: White Collar.

Mr. Ruzumna is a frequent commentator on issues of criminal law, investigations, and asset forfeiture, and is often interviewed for television and newspaper stories on white collar criminal issues. He recently appeared on Bloomberg Television and an affiliate of CNBC to discuss the insider trading laws and recent prosecutions involving alleged violations of the securities laws. Mr. Ruzumna also serves as counsel to the Anti-Money Laundering and Financial Crimes Committee of the Securities Industry and Financial Markets Association (SIFMA), with a focus on anti-corruption compliance issues.

Before joining Patterson Belknap in 2005, Mr. Ruzumna spent six years working at the United States Attorney's Office for the Southern District of New York, where he last served as Acting Chief of the Major Crimes Unit, a unit of more than 20 federal prosecutors dedicated to investigating and prosecuting economic crimes and financial frauds. As a federal prosecutor, Mr. Ruzumna investigated and prosecuted white collar criminal cases involving bank fraud, mail and wire fraud, health care fraud, securities fraud, criminal tax violations, and money laundering. He also prosecuted organized crime and handled civil and criminal asset forfeiture actions. In 2004, Mr. Ruzumna received the Department of Justice's highest honor, the John Marshall Award for Asset Forfeiture, and acted as a lecturer and instructor of trial advocacy at the Department’s National Advocacy Center.

After graduation from law school, Mr. Ruzumna served as a Law Clerk to the late Hon. Jay C. Waldman, United States District Court for the Eastern District of Pennsylvania. Mr. Ruzumna then spent almost four years in private practice in Washington, D.C., before becoming a federal prosecutor.

  • U.S. Court of Appeals, Second Circuit
  • U.S. District Court, Southern and Eastern Districts of New York; District of Columbia
  • New York
  • District of Columbia
  • Illinois
Professional Activities

MEMBERSHIPS: Counsel to the Anti-Money Laundering and Financial Crimes Committee of the Securities Industry and Financial Markets Association (SIFMA); New York State Bar Association (Section of Commercial and Federal Litigation, Committee on White Collar Criminal Litigation)

HONORS: Recognized in Chambers USA in the area of Litigation: White-Collar Crime and Government Investigations; Listed as a "Litigation Star" for New York in Euromoney Institutional Investor PLC’s Benchmark Litigation; Recognized in The Best Lawyers in America® in the area of Criminal Defense: White Collar