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John Roberti


Washington, D.C.

Roberti John
John Roberti


Washington, D.C.

John leads Allen & Overy's Washington D.C. Antitrust practice and is a member of the firm's Investigations and Litigation practice. John provides strategic guidance to clients in all aspects of government investigations and private antitrust litigation. For nearly 25 years, John has guided clients through complex merger and civil investigations involving a wide range of complex issues.

His practice currently involves many of the largest cartel matters ongoing in the United States, including representing the largest auto parts manufacturer in the world in the largest antitrust class-action ever undertaken, representing one of three pre-packaged seafood suppliers, a large electronic component supplier, and a global energy supplier. Clients say John “provides top-tier advice and responsiveness, and demonstrates real expertise in the field.”

John is a nationally recognized alumnus of the Federal Trade Commission (FTC), which, along with the experience developed in private practice, gives him insight into the workings of the FTC and the U.S. Department of Justice's (DOJ) Antitrust Division. John also has handled high-profile trials and litigation in both private practice and also during his tenure with the FTC, and represents clients in high stakes class action litigation.

Chambers USA, Legal 500, and Who’s Who Legal Competition have recognized John as a leading antitrust lawyer for many years. Clients report that John is “incredibly intelligent and well-versed in all things antitrust," and "analyses issues quickly and is extremely flexible.” He receives praise from clients for “always finding the perfect balance between pragmatic solutions while sticking to ethics and high-value standards.” John is recognized as an Antitrust Litigation ‘Super Lawyer’ in the Washington D.C. area. John was awarded the ABA Antitrust Law Section Outstanding Performance Award, 2021-2021. John is also the host of the American Bar Association Antitrust Law Section's weekly podcast, Our Curious Amalgam. He is the pro bono partner for Allen & Overy’s Washington, DC office, and was selected as a member of the Allen & Overy Leadership Academy. John also is a Fellow of the American Bar Foundation and serves on two non-profit boards supporting children with special needs.


Washington, D.C.

Allen & Overy LLP
1101 New York Avenue, NW
Washington, D.C.

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Admitted: Bar of the District of Columbia

Admitted: Bar of the State of New York

Admitted: United States District Courts
Eastern District of New York
Southern District of New York
Western District of New York
District of Columbia

Admitted: United States Courts of Appeals
Second Circuit
Eleventh Circuit
District of Columbia Circuit

Admitted: United States Supreme Court


J.D., New York University School of Law, 1994 

B.A., Brown University, 1991

Experience highlights


Published work

News & insights


News: 16 AUGUST 2021

Allen & Overy works with National Women’s Law Center on gender justice brief filing in support of transgender community

Working alongside the National Women’s Law Center (NWLC), Allen & Overy’s U.S. litigation team filed an amicus brief to the U.S. Court of Appeals for the Eleventh Circuit challenging Alabama’s policy…

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View of high-rise buildings from ground level

Publications: 04 AUGUST 2021

Progressive antitrust agenda gains momentum under Biden administration

With its recent executive order on competition law and the nominations of Jonathan Kanter and Lina Khan to lead the DOJ Antitrust Division and Federal Trade Commission, respectively, the Biden…

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Glass building

Publications: 30 APRIL 2021

Supreme Court deprives FTC of key enforcement tool

On April 22, in AMG Capital Management v. FTC, the Supreme Court unanimously struck down one of the Federal Trade Commission’s key enforcement tools.

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Clouds reflected in skyscraper building

Publications: 11 FEBRUARY 2021

Hart-Scott-Rodino filing thresholds decrease for the first time in over a decade in the U.S.

HSR filing thresholds decrease for the first time in over a decade – size-of-transaction threshold to be USD92.0 million

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