Dan Eisenberg is an experienced litigator and investigator. He represents people and organizations in constitutional, civil rights, and commercial disputes in courts across the country.
Dan’s trial record includes securing record-breaking settlements mid-trial in a prisoner death case and school suicide case, and judgment against U.S. Customs and Border Protection in a novel dispute over tariffs on a breakthrough HIV medication. Dan has secured emergency relief on behalf of journalists at the Voice of America, and and achieved favorable outcomes for his clients in confidential arbitrations and other trial-like proceedings.
Immediately prior to joining the firm, Dan served as Deputy Staff Director & Senior Counsel to the U.S. Senate Permanent Subcommittee on Investigations, the primary investigative body of the U.S. Senate, where he led bipartisan investigations into government misconduct. Dan’s investigations culminated in Congressional hearings and reporting on the abuse of pretrial detainees at a prominent federal prison; unchecked sexual assault of prisoners by Federal Bureau of Prisons employees at multiple facilities across the country; and the Department of Justice’s failure to oversee deaths in state and local custody. This public record established the factual predicate for reforms within the Department of Justice and by Congress, including passage of the Federal Prison Oversight Act and the Prison Camera Reform Act. These investigations, and the resulting legislation, were honored with the 2024 Carl Levin Award for Effective Oversight.
At the firm, Dan’s representative clients include public servants (elected and otherwise), C-suite executives, victims of sexual abuse or discrimination, and the families of people who died while incarcerated. Dan also helps whistleblowers and others respond to inquiries from the U.S. Congress.
Dan began his legal career as a Law Clerk to the Honorable Robert P. Patterson, Jr., U.S. District Judge for the Southern District of New York, followed by six years at Patterson Belknap Webb & Tyler LLP, where he represented large corporations and executives in complex commercial litigation, monitored a large municipal police force pursuant to a Department of Justice Consent Decree, defended New York cultural institutions in cases involving disputed provenance of renowned fine art, and won a favorable settlement for residents of Chinatown who lost their property in a five-alarm fire.
Dan’s work has been featured in The New York Times, Associated Press, Reuters, Time Magazine, The Washington Post, The Marshall Project, CNN, MSNBC, NPR, and other national and local media outlets. He serves as an Advisory Board Member of the Alliance of Families for Justice, a non-profit organization that supports and advocates for incarcerated people and their families. He has guest lectured on Congressional investigations at Cardozo School of Law and Brooklyn Law School and taught criminal procedure as an Adjunct Professor at St. Francis College.
Education
New York University School of Law, J.D.
Arthur T. Vanderbilt Medal
Order of the Barristers
Moot Court Board
Anthony G. Amsterdam Teaching Assistant
University of Pennsylvania, B.A. in Health and Societies, cum laude, with Distinction
Clerkship
Hon. Robert P. Patterson, Jr., Southern District of New York
Admissions
U.S. District Court, Southern District of New York
U.S. District Court, Eastern District of New York
U.S. District Court, District of Columbia
New York
District of Columbia
U.S. Court of International Trade
U.S. Court of Appeals, Federal Circuit
U.S. Court of Appeals, D.C. Circuit
U.S. Supreme Court
Memberships & Honors
New York State Supreme Court Independent Screening Panel for New York County (2024)
Federal Bar Council American Inn of Court (2024 – 2025)
Federal Bar Council Civil Rights Committee
Advisory Board at the Alliance of Families for Justice
Super Lawyer Rising Star (2024)
Attorney News
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ECBAWM Sues DOGE and Others to Save the U.S. Institute of Peace
April 14, 2025
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UPDATE: New York Federal Court Halts Dismantling of Voice of America
April 2, 2025
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ECBAWM Represents Voice of America Journalists, Federal Workers and their Unions In Lawsuit against Kari Lake and Others In Challenge to Shutdown of U.S. Agency for Global Media
March 26, 2025

Education
New York University School of Law, J.D.
Arthur T. Vanderbilt Medal
Order of the Barristers
Moot Court Board
Anthony G. Amsterdam Teaching Assistant
University of Pennsylvania, B.A. in Health and Societies, cum laude, with Distinction
Clerkship
Hon. Robert P. Patterson, Jr., Southern District of New York
Admissions
U.S. District Court, Southern District of New York
U.S. District Court, Eastern District of New York
U.S. District Court, District of Columbia
New York
District of Columbia
U.S. Court of International Trade
U.S. Court of Appeals, Federal Circuit
U.S. Court of Appeals, D.C. Circuit
U.S. Supreme Court
Memberships & Honors
New York State Supreme Court Independent Screening Panel for New York County (2024)
Federal Bar Council American Inn of Court (2024 – 2025)
Federal Bar Council Civil Rights Committee
Advisory Board at the Alliance of Families for Justice
Super Lawyer Rising Star (2024)