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Jonathan Lopez


Washington, D.C.

Lopez Jonathan
Jonathan Lopez


Washington, D.C.

Jonathan’s practice focuses on complex anti-corruption, anti-money laundering, and sophisticated financial fraud and white collar matters. Jonathan has the rare distinction of successfully trying to verdict both an FCPA matter as well as an Enron matter and represents individuals and businesses in government enforcement actions, congressional inquiries, internal investigations and with compliance advice. Jonathan’s experience is rooted in his diverse and wide-ranging experience as a prosecutor in the DOJ, including as a member of the Enron Task Force, a Senior Trial Attorney in DOJ’s Criminal Fraud Section, Deputy Chief of DOJ’s Bank Integrity Unit, and an Assistant United States Attorney in Miami, Florida. Jonathan offers an in-depth understanding of the DOJ and other federal enforcement agencies, which is instrumental in helping clients navigate complex investigations.

Jonathan has been ranked by Chambers USA 2019 in the category of Litigation: White-Collar Crime & Government Investigations and is an adjunct professor at Georgetown University Law Center where he teaches a course on federal criminal trial strategy.

Noteworthy experience includes:

  • Representing a global international oil and gas company in a multi-national anti-corruption investigation.
  • Representing a technology company with respect to allegations of visa fraud in connection with the hiring of certain foreign employees.
  • Representing international broker dealer in anti-corruption risk assessment.
  • Representing multiple employees of a fortune 150 company in a large multi-national anti-corruption and ITAR investigation.
  • Representing a non-profit in connection with several Congressional investigations and related lawsuits.
  • United States v. Mikerin, District of Maryland. Represent a Russian foreign official against FCPA, extortion and money laundering allegations.
  • Conduct numerous internal investigations involving a wide-range of allegations including accounting fraud, corporate theft and self-dealing, as well as allegations of child pornography by employees.
  • Representing financial institutions and individuals in connection with Department of Justice, Department of Treasury, and FINRA actions.
  • Performing pre-transaction diligence in the areas of FCPA and anti-money laundering compliance and Provide general FCPA and anti-money laundering compliance and strategy advice.

News & insights

Publications: 12 OCTOBER 2021

Hong Kong's personal data law given new teeth - what they mean for businesses

The Personal Data (Privacy) (Amendment) Ordinance 2021 (the Ordinance) came into effect on 8 October 2021.

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Publications: 11 OCTOBER 2021

GIR - data privacy & transfer in investigations

Investigations, now a fact of business life, matter and need to be run wisely. Adhering to data privacy laws is a key component of this, especially for international matters.  

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Windows on a modern glass and metal building

Publications: 07 OCTOBER 2021

M&A litigation – a case of back to the future

An expected tidal wave of Covid-related M&A litigation has not materialised, but the current spate of deals and rising prices could see disputes spike and investors turn once again to the courts.

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News: 04 OCTOBER 2021

Arbitration partner Christopher Mainwaring-Taylor relocates to our Singapore office

Allen & Overy further strengthens its market-leading Asia Pacific Arbitration practice with the relocation of Christopher Mainwaring-Taylor (Chris), a long-standing A&O Arbitration partner, from Paris…

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Washington, D.C.

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

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Admitted: Bar of the State of New York, 2016

Admitted: Bar of the District of Columbia, 2012

Admitted: United States Supreme Court, 2008

Admitted: State Bar of California, 2000


JD., Georgetown University Law Center, Washington, D.C., 2000

B.A., University of California, Los Angeles 1997