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Rimon welcomes former General Counsel to the Senate Committee on the Judiciary Mark Heilbrun as Partner in its Washington D.C. office

News Mark Heilbrun · November 09, 2020

Washington, D.C. — Internationally recognized advocate and transactional attorney Mark Heilbrun has joined Rimon as a Partner in the disruptive law firm’s growing Washington, D.C. office.  Mr. Heilbrun works on client matters primarily in the largest urban centers along the Northeast Corridor of the United States, the Arabian Peninsula, Europe, and Asia, representing sovereign wealth clients and corporations in navigating the intersection between law, finance, and international security policies. 

Mr. Heilbrun has occupied senior appointed positions in all three branches of the United States Government, including General Counsel to the Senate Committee on the Judiciary. Prior to assuming that role, he received an appointment as Counsel to the United States Intelligence Community Staff and remained in the Intelligence Community during both the Bush and Clinton administrations. From 1995 to 1997, he served as Deputy General Counsel to the United States Senate Select Committee on Intelligence, where he negotiated and drafted the Economic Espionage Act of 1996, the only comprehensive federal criminal trade secrets protection statute to date.  While serving on the Judiciary Committee, Mr. Heilbrun drafted and negotiated the Homeland Security Act of 2002, and shortly thereafter drafted the Intelligence Reform and Terrorism Protection Act of 2004 – including the creation of the Office of the Director of National Intelligence.  He regularly appears before the U.S. Departments of Justice, Treasury, State, Defense, Commerce (Bureau of Industry and Security/Export Regulations), Energy, Homeland Security, and the SEC, as well as other agencies and tribunals.  In addition, he works regularly with congressional committees. 

Over the course of his career, he has amassed extensive experience representing sovereign governments, corporations, and high-net worth individuals regarding international and domestic regulatory compliance and enforcement matters, including in connection with congressional investigations involving criminal exposure.  He also advises clients in connection with complex litigation, including on appeal and at trial.  Finally, he advises his white collar and complex litigation clients on media and crisis response.

In his transactional practice, Mr. Heilbrun assists clients in negotiating transnational energy transactions and navigating accompanying compliance issues pursuant to recent U.S. policies.

Mark is the 31st partner to join Rimon and the 7th partner to join the firm’s Washington D.C. office in 2020, following, amongst others, Mikhail Usubyan, Xiaowei Ye, Jason Xu, and Xiaohua Zhao. In addition to his colleagues in D.C., Mr. Heilbrun will work closely with Richard Ernest of Rimon’s Dubai practice, who is also active in representing sovereign wealth funds, as well as with Stephen Diaz Gavin and Katie Hyman of Rimon’s international disputes team. The firm’s International Transactions and Dispute Resolution practices have significant experience handling local, national, regional, and cross-border matters, and the group’s clients stand to benefit greatly from the addition of Mark’s network, unique insight, and expertise.

“We are pleased to welcome Mark Heilbrun to our growing international firm.  His expertise and relationships among world governments will allow for further opportunity to serve our clients across the globe,” said Michael Moradzadeh, Rimon’s CEO.

Mr. Heilbrun echoed Mr. Moradzadeh’s enthusiasm. “Having represented clients in many different parts of the world for some of the finest (and more traditional) law firms and having been given the opportunity to spend several years as an appointed senior federal official, I am very impressed by Rimon’s leading-edge model,” he said. “Particularly well-suited for my multi-faceted practice areas and potential international controversy work, and including unprecedented guarantees on originations, firm leadership continues to exceed expectations and build alternatives to the traditional model of practicing law in a collegial, profit-driven manner,” said Mr. Heilbrun.

Mr. Heilbrun graduated from the University of Texas at Austin (J.D., summa cum laude) and from Emory University (B.A., summa cum laude, Phi Beta Kappa).


Rimon has 33 offices across five continents. The firm is widely known as being at the vanguard of legal innovation and has been repeatedly recognized by the Financial Times as one of North America’s most innovative law firms. The firm’s Managing Partners were both named ‘Legal Rebels’ by the American Bar Association’s ABA Journal and have spoken on innovations in the practice of law at Harvard and Stanford Law Schools. Rimon and its lawyers have also received numerous awards for excellence, including from Best Lawyers and Chambers & Partners.