John Mattox

John is an attorney with Koprince Law LLC. John’s practice spans the breadth of federal procurement law, from dispute resolution to transactional matters. He has worked on matters before SBA’s Office of Hearing and Appeals, the Government Accountability Office, the Armed Services Board of Contract Appeals, and the Civilian Board of Contract Appeals. In addition, he has assisted clients with, among other things, joint venture agreements, teaming agreements, mentor-protégé agreements, and subcontracts.

Before joining the firm, John practiced business litigation at a national law firm in Kansas City, Missouri. There, he honed his advocacy skills by drafting appellate briefs in multiple courts of appeals; drafting numerous dispositive and other motions in state and federal courts; and assisting in bench and jury trials. In addition, he became a specialist in researching and analyzing complex issues under state and federal law. In tandem with a detail-oriented mindset, John draws on this experience daily to formulate pragmatic solutions for clients.

John prizes every moment he spends with his wife and three children. Together, they enjoy taking day trips, learning, playing, and serving in their church congregation. Personally, John relishes good books, both fiction and non-fiction, and never skips over a used bookstore.

John can be reached by telephone at (785) 200-8919 or by email at

Bar Admissions

  • Kansas


  • J.D., with honors, The University of Texas School of Law
  • B.S., magna cum laude, Brigham Young University

Recent Publications

  • GAO’s Bid Protest Process: A Non-Jargon Primer.” Contract Management Magazine, February 2019.
  • “U.S. Supreme Court in Spokeo Requires Concrete Injury for Claimed FCRA Statutory Violations.” SHB National Employment Perspective, May 20, 2016.
  • “Franchisors and Franchisees: Joint Employers?” SHB National Employment Perspective, August 20, 2014.
  • “Word Travels Fast: Employees Should Think Before Speaking, While Employers Must Be Prudent in Disciplining Employee Speech and Expression.” 39:4 Employment Relations Today, Winter 2013.
  • “California Takes the Lead in Comprehensive Social Media Privacy Protection.” SHB National Employment Perspective, May 1, 2013.

Representative Matters

  • Drafted joint venture agreement between entities participating in SBA’s 8(a) Business Development Program
  • Assisted in a contractor’s appeal of a wage classification issue under the Davis-Bacon Act.
  • Reviewed reseller agreements to ensure compliance with applicable limitations on subcontracting and the non-nanufacturer rule.
  • Assisted client in navigating VA and SBA’s regulations prior to sale of business to ensure that business, under the succeeding ownership, would qualify as a service-disabled veteran-owned small business.
  • Assisted in a challenge, before SBA’s Office of Hearing and Appeals, to SBA’s denial of an entity’s application to the 8(a) Business Development Program.