Joshua  I. Marrone


Joshua focuses his practice on commercial litigation and the representation of municipal entities. Prior to joining Dinsmore, he was an Assistant Chief Counsel for the Department of Homeland Security, litigating cases before federal administrative courts from trial through appeal. He also advised law enforcement officers on detention policies and counseled government agencies on policy developments and best practices. In addition to serving as a union steward for the Denver and Salt Lake City offices, he acted as a Point of Contact for the Department of State, federal litigation, matters involving juveniles, the Violence Against Women Act, and mental competency. Upon graduating law school, he worked as a law clerk for a judge on the Kansas Court of Appeals and a Justice of the Kansas Supreme Court, objectively analyzing complex civil and criminal cases to prepare objective memoranda and proposed opinions.


  • University of Missouri – Kansas City School of Law  (J.D., summa cum laude, 2011)
  • University of Missouri  (B.A., magna cum laude, 2007)

Bar Admissions

  • Kansas
  • Missouri
  • Colorado