Jonathan has represented plaintiffs and defendants in bet-the-company litigation for nearly a quarter of a century. He has successfully litigated antitrust, class action, securities, RICO, contractual, tort, intellectual property, and other high-stakes commercial disputes in federal and state courts throughout the United States. In addition to his litigation work, Jonathan regularly provides strategic advice and counsel to clients.

Before joining the firm in 2005, Jonathan was a partner in the Seattle office of Susman Godfrey, an associate at Wiley, Rein & Fielding in Washington D.C. and a law clerk for the late Frank A. Kaufman of the U.S. District Court for the District of Maryland.

Jonathan’s representative cases include:

  • Representing Barclays in litigation arising from its 2008 purchase of Lehman Brothers’ North American broker-dealer business; defeated $13 billion claim that Barclays had fraudulently underpaid for the assets it purchased and won $8.3 billion in additional assets (SDNY, Second Circuit, Supreme Court)
  • Defending Barclays against allegations of fraud, breach of contract, and RICO violations brought by partners of Dewey & LeBeouf, who sought to avoid repaying partnership capital loans  (DC, New York, and Illinois federal courts)
  • Representing lawyers in a dispute with former firm over millions of dollars in unpaid compensation; case settled on the eve of arbitration for the amount claimed (DC arbitration)
  • Co-lead counsel representing class of municipal entities in case alleging price-fixing of municipal derivative investment products; more than $220 million in settlements (SDNY)
  • Representing Genesco, Inc., against UBS and Finish Line; court rejected the defendants' fraud and material adverse event claims, and ordered Finish Line to close on its $1.5 billion purchase of Genesco; settled with Genesco receiving $175 million in cash plus 12% of Finish Line’s stock  (Tennessee Chancery Court and SDNY)
  • Representing class in securities fraud action against Genzyme, Inc.; settled for $64 million (SDNY)
  • Defeating emergency motions by community activists trying to derail construction of the new Yankee Stadium (New York state and federal courts)

  • University of Pennsylvania Law School, J.D., cum laude; Associate Editor, Law Review
  • Johns Hopkins University, B.A., History; Beneficial-Hodson Scholar; Departmental Honors


  • Maryland
  • District of Columbia

  • Hon. Frank A. Kaufman, U.S. District Court: District of Maryland