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Colleen E. Roh Sinzdak

Senior Associate
Washington, D.C.

Colleen E. Roh Sinzdak

As an associate in our litigation group, Colleen E. Roh Sinzdak focuses her practice on appellate litigation. She litigates major questions of constitutional law and statutory interpretation before the United States Supreme Court and the Courts of Appeals. She has particular experience in devising creative solutions to complex legal problems.  

Colleen has briefed numerous cases before the Supreme Court and the Courts of Appeals, and she has personally argued cases before the D.C. Circuit and the Sixth Circuit. Before entering private practice, Colleen clerked for Chief Justice John Roberts of the United States Supreme Court and Chief Judge Merrick Garland of the United States Court of Appeals for the D.C. Circuit.

Colleen graduated summa cum laude from Harvard Law School, where she was the Vice President of the Harvard Law Review and a member of the winning team in the Ames Moot Court Competition.

Education and admissions


  • J.D., summa cum laude, Harvard Law School, 2010
  • M.A., University of Cambridge, Clare College, 2004
  • B.A., University of Cambridge, Clare College, 2002
  • B.A., summa cum laude, Columbia University, 2000

Bar admissions and qualifications

  • District of Columbia

Court admissions

  • U.S. Court of Appeals, District of Columbia Circuit
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