Jonathan Kossak is a Counsel in Miller & Chevalier's Litigation Department who focuses on defending corporations and individual executives in actions brought by whistleblowers, federal and state agencies, bankruptcy trustees, and other private litigants. Mr. Kossak's experience includes False Claims Act litigation, breach of fiduciary duty actions, claw-back litigation and corporate governance conflicts. Mr. Kossak also has experience in white collar criminal defense matters, and helped to secure a full acquittal for a client after a four-week criminal tax shelter trial in federal court.

Mr. Kossak's extensive pro bono practice includes work for the Mid-Atlantic Innocence Project (MAIP) with whom he has partnered to exonerate two clients who were wrongfully convicted and imprisoned in the mid-1980s for sexual assaults they did not commit. Mr. Kossak was awarded the Maryland State Bar Association and Pro Bono Resource Center's Young Lawyers Section Alex Fee Memorial Award in 2016 and MAIP's Defender of Innocence Award in 2014 for his work in this area.

Prior to arriving at Miller & Chevalier, Mr. Kossak clerked for the Honorable Anita B. Brody in the Eastern District of Pennsylvania and worked as an associate at WilmerHale. Mr. Kossak also was a member of the University of Pennsylvania Law Review and was the first official Editor of the Law Review's online supplement.

  • Currently defending an alleged whistleblower action against a group of health and welfare nonprofits against various state court suits instigated by a former in-house counsel
  • Secured the early dismissal of a False Claims Act suit brought by an alleged whistleblower in the Eastern District of Virginia against a Fortune 500 company over a multi-year, multi-million dollar contract for military services 
  • Second-chaired the successful defense of a tax lawyer in a four-week criminal tax trial in federal court – client was acquitted of all charges 
  • Second-chaired a week-long commercial arbitration involving a dispute over a failed internet start-up partnership and secured a multi-million dollar decision for client 
  • Defended in three separate bankruptcy adversary proceedings the dissolution committee of a bankrupt national law firm, a former executive of a separate bankrupt national law firm, and a corporate director and officer of a national title company against breach of fiduciary duty and claw-back claims
  • Intern, The Honorable Inez Smith Reid, District of Columbia Court of Appeals, 2006 
  • Legislative Assistant/Legislative Correspondent, Congresswoman Jane Harman, 2003 - 2005
  • Maryland State Bar Association and Pro Bono Resource Center's Young Lawyers Section Alex Fee Memorial Award, 2016
  • Mid-Atlantic Innocence Project Defender of Innocence Award, 2014
  • Member, DC Bar's Nominations Committee, 2015 - 2016
  • Member, John Payton DC Bar Leadership Academy, Class of 2014
Bar Admissions
  • District of Columbia
  • Maryland
  • Clerk, The Honorable Anita B. Brody, Eastern District of Pennsylvania

The U.S. Department of Justice (DOJ) continues to focus on cross-border white collar investigations and charge individuals located abroad.

White Collar Alert

Since our last publication, there has been significant activity in some of the most noteworthy government investigations impacting corporate executives. Key developments include:

White Collar Alert

The first half of 2018 saw several significant developments in government investigations that impact corporate executives. Since our last publication, the Department of Justice (DOJ):

White Collar Alert