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Billy Jacobson and Jonathan Lopez join as partners in Allen & Overy’s global Litigation and Investigations practice

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Tim House


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25 March 2020

Adds to A&O’s deep bench of white-collar crime talent with expertise in FCPA and other Federal criminal enforcement priorities. 

Allen & Overy today announced that Billy Jacobson and Jonathan Lopez have joined the firm as partners in the global litigation and investigations practice, and will be based in Washington, D.C. The addition of Jacobson and Lopez, both of whom previously served in the Fraud Section of the U.S. Department of Justice, will further scale the firm’s U.S. enforcement defense practice. Jacobson and Lopez join from Orrick, Herrington & Sutcliffe LLP.

“As federal criminal enforcement against banks and companies continues to shift from its historic New York base to the Department of Justice’s main office in Washington, D.C., A&O has responded by augmenting our talent at the partner level to match that momentum and better service our clients,” said Tim House, U.S. senior partner at Allen & Overy. “With the addition of Billy and Jonathan, we’re bolstering our existing, well-regarded litigation and enforcement team by adding complementary skill sets for both domestic and global clients.”

A&O has made significant investment in its U.S. enforcement defense practice in recent years. The firm’s U.S. partners offer expertise working with, and in many cases previously working for, the SEC, CFTC and FTC, and three partners served as former Southern District of New York prosecutors, including Julian Moore, who joined A&O in 2019. Notable recent engagements across this practice include representing BNP Paribas in defending criminal and regulatory investigations in the FX markets, a global investment bank in criminal and regulatory investigations concerning its hiring practices in Asia, and Robert Olan, an analyst at Deerfield Capital, in an insider trading trial in New York.

Similarly, the Washington, D.C. office has grown substantially since it opened in 2011, including partners and attorneys with expertise across financial services regulations; commodities, securities and related derivatives litigation; projects, energy and infrastructure with specialized expertise in development finance institutions (DFIs); economic sanctions; and antitrust litigation. 

“FCPA and similar anti-corruption and anti-bribery matters have grown in size and complexity over the past decade, posing important risks for multinational corporations, and especially those in the financial, technology, pharmaceutical, and energy sectors,” said Billy Jacobson. “I am so pleased to be joining Allen & Overy where the culture of collaboration across practice areas and across the globe is paramount to ensuring clients – especially those with cross border operations – get the highest quality and most efficient counsel.”

“I have known and respected the Allen & Overy litigation offering for many years, and I am looking forward to bringing to bear my expertise in the areas of white-collar crime, anti-corruption and anti-money laundering for corporate clients,” said Jonathan Lopez. “These practices areas and the A&O Washington, D.C. office are at an exciting inflection point, and I am excited to add my expertise and be part of the team.”


Jacobson joined Orrick in 2014 and while he handles all manner of white-collar criminal work, his practice has particular emphasis on overseas corruption cases, including World Bank and other multi-lateral development bank enforcement actions. Prior to joining Orrick in Washington, D.C., Jacobson served as Senior Vice President, Co-General Counsel, and Chief Compliance Officer at Weatherford International, a multinational oil and natural gas service company, for over five years. In private practice, Jacobson has been a partner with Kirkland & Ellis and with Fulbright & Jaworski. He also served in the DOJ’s Fraud Section, where all FCPA investigations and prosecutions are based. During his last stint at the Fraud Section, Billy served as the Assistant Chief for FCPA Enforcement and had responsibility for half of all FCPA investigations and prosecutions and liaised extensively with prosecutors all over the globe. Jacobson received his JD from Georgetown University Law Center and his BA from Tufts University. 

Jonathan also joined Orrick’s Washington, D.C. office in 2014.  Jonathan has deep substantive expertise across a range of areas, including anti-corruption, anti-money laundering, and other financial crimes. Jonathan has the rare distinction of successfully trying to verdict both an FCPA matter as well as an Enron matter and represents corporations and individuals in government enforcement actions, congressional inquiries, and internal investigations. Prior to joining Orrick, Jonathan spent over 11 years at the DOJ serving in a number of capacities, including as an inaugural Deputy Chief of the Department's Bank Integrity Unit, where he was the front-line supervisor on groundbreaking anti-money laundering cases such as HSBC and MoneyGram; a Senior Trial Attorney in DOJ's Criminal Fraud Section, including as a member of the Enron Task Force; an Attorney Advisor in DOJ's Office of Legislative Affairs; 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.  He received his JD from Georgetown University Law Center and his BA from the University of California, Los Angeles.