Adriel I. Cepeda Derieux



Adriel I. Cepeda Derieux focuses his practice on complex litigation matters. He has extensive experience representing private and public clients in commercial and appellate litigation, as well as providing strategic counseling in anti-discrimination matters and government investigations.

Mr. Cepeda Derieux has experience litigating before state appellate courts, the United States Courts of Appeals and the Supreme Court of the United States. He has briefed appellate matters involving bankruptcy law, banking law, constitutional law and immigration law.

Mr. Cepeda Derieux maintains an active pro bono practice, focusing on issues related to civil rights, citizenship, immigration reform and immigrant rights, LGBTQ rights, and federal and state disability rights laws.

Mr. Cepeda Derieux was a member of the firm from 2010 to 2011, and rejoined the firm in 2013 after serving as a law clerk to the Hon. Juan R. Torruella of the US Court of Appeals for the First Circuit and to the Hon. Theodore A. McKee of the US Court of Appeals for the Third Circuit.

Publications & News


April 18, 2018

WilmerHale Recognized for Pro Bono Work by Immigrant Defense Project

On April 10, WilmerHale was recognized by the Immigrant Defense Project (IDP) for its work in the area of immigrant rights. The firm and other honorees were recognized at the IDP's 20th Anniversary Gala in New York City.

January 31, 2017

False Claims Act: 2016 Year-in-Review

In 2016, the Department of Justice continued to give high priority to False Claims Act investigations and prosecutions. This WilmerHale Client Alert was republished by Pratt's Government Contracting Law Report.

August 23, 2016

High Court Inclusive Communities Ruling: 1 Year Later

In this article published by Law360, authors David Ogden, Franca Harris Gutierrez, Debo Adegbile, Michael Gordon, Stephen Carey, Sky Lynn Perryman and Adriel Cepeda Derieux analyze the evolution of disparate impact doctrine since the court's Inclusive Communities decision, with a particular focus on how the decision appears to be affecting enforcement cases brought by the Consumer Financial Protection Bureau.

July 14, 2016

Brooklyn Defender Services Recognizes WilmerHale’s Pro Bono Contributions

The firm has provided pro bono support to the Family Defense Practice in parents' rights cases since 2011, and several current and former WilmerHale lawyers have served on the organization's advisory board.

July 11, 2014

WilmerHale Achieves Pro Bono Victory for Domestic Violence Victim and Autistic Child

On July 8, 2014, WilmerHale achieved a significant victory for a pro bono client and domestic violence victim in a case described by the Second Circuit as involving “novel and significant issues” of “first impression” under the Hague Convention on the Civil Aspects of International Child Abduction.

July 1, 2014

Supreme Court Unanimously Rules in Favor of WilmerHale Pro Bono Client, Against Speech-Restrictive Law

WilmerHale secured a significant victory in the US Supreme Court, on behalf of pro bono client Eleanor McCullen and others in a First Amendment challenge to a Massachusetts law restricting speech on sidewalks outside reproductive health care clinics that perform abortions.

Speaking Engagements

Professional Activities

Mr. Cepeda Derieux is admitted to practice before the US Supreme Court, the US Court of Appeals for the Federal Circuit, the First Circuit, the Second Circuit, the Third Circuit, the Seventh Circuit, the Ninth Circuit and the District of Columbia Circuit, and the US District Courts for the Eastern and Southern Districts of New York. He currently serves a three year term as an appointed advocate to the US Court of Appeals for the Second Circuit's Pro Bono Panel.


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JD, Columbia Law School, 2010, Harlan Fiske Stone Scholar, Columbia Law Review, Simon H. Rifkind Prize

BA, History and Political Science, Williams College, 2005

Bar Admissions

New York

United States Supreme Court




The Hon. Theodore A. McKee, US Court of Appeals for the Third Circuit, 2012 - 2013

The Hon. Juan R. Torruella, US Court of Appeals for the First Circuit, 2011 - 2012

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