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Jamar T.King

Partner
Dayton

O 937.443.6852

Jamar T.King

Partner

Jamar, a partner in the Business Litigation and Government Contracts practice groups, is a seasoned litigator with significant state and federal trial experience who focuses his practice on solving problems for clients operating in the complex realm of government procurement. He provides counseling and support to government contractors on everything from claims under the Contract Disputes Act to general litigation to responding to enforcement actions.

In addition to advising government contractors, Jamar has handled complex commercial litigation, general contract disputes, business fraud lawsuits, internal investigations, and domestic public corruption investigations. His clients range from individuals and small businesses to some of the largest companies on the Fortune 500 list. In particular, Jamar has significant experience representing marketing and media agencies against claims from their former clients and competitors. In every instance, whether resolved through settlement, motion practice, or at trial, Jamar has effectively defended clients’ interests and helped them achieve their goals.

Dayton Business Journal Rising Star
Recognized in Best Lawyers 2027

Focus Areas

Government Contracts Litigation

  • Won summary judgment and high-dollar damages award in favor of government contractor in certified claim appeal―arising from the General Services Administration’s breach of contract―before the Civilian Board of Contract Appeals.
  • Litigated environmental enforcement action brought by Ohio Environmental Protection Agency against defense and aerospace manufacturer, resulting in favorable agreed consent decree.
  • Represented government contractors against government agencies in multiple actions arising from disputed terminations for convenience.
  • Represented defense contractor in appeal of a termination for default (T4D) against Department of Defense before Armed Services Board of Contract Appeals, resulting in a settlement agreement converting the T4D into a termination for convenience.
  • Negotiated favorable resolution of pre-litigation dispute between defense contractor and consultant arising from CMMC readiness consulting agreement.
  • Defended principal of small business through investigation for bribery and illegal steering of state-level government contracts. Prosecution declined.
  • Counseled chief financial officer of defense contractor involved in false claims act investigation, resulting in no action taken against client.

Complex Commercial Litigation

  • Successfully defended Fortune 500 manufacturing company in commercial contract dispute tried to jury verdict.
  • Secured complete dismissal of lawsuit alleging investment fraud claims against private equity firm.
  • Successfully defended media buying agency against claims of improper retention of incentives and rebates.
  • Obtained complete dismissal of claims in music royalty dispute against digital performance royalty distribution company.
  • Represented Fortune 500 energy company in litigation that thwarted local municipality’s attempt to violate Ohio Certified Territories Act.

Government Enforcement Defense

  • Routinely manage responses to requests for information, including civil subpoenas, grand jury subpoenas, and civil investigative demands, issued to individuals, government contractors, and other entities.
  • Represented elected official investigated for public corruption in connection to Hobbs Act violations. Prosecution declined.
  • Represented lobbyist in two-year federal public corruption investigation. Prosecution declined.
  • Represented private equity firm in federal securities investigation. Prosecution declined.
  • “2025 Government Contracts Symposium,” Principal Organizer, Host & Moderator, University of Dayton, October 23, 2025
  • “Legal Update for Evolving Procurement Landscape,” 24th Annual Industry Day & Small Business Workshop, Society of American Military Engineers – Kittyhawk Post, June 12, 2025
  • “Adapting to Change: What a Second Trump Administration Means for Government Contractors,” Thompson Hine Transition: A Presidential Change Webinar Series, Session Ten, April 2025
  • “Navigating Cincinnati’s Thriving Startup Ecosystem,” Thompson Hine Startups Streamlined Seminar Series, July 2024
  • “Navigating Litigation and Investigations for Government Contractors,” Thompson Hine “Government Contracting Perspectives” Workshop Series, Session 2, University of Dayton School of Law, June 18, 2024
  • “Considerations When Forming Your Business and Entering the Government Procurement Market,” Thompson Hine “Government Contracting Perspectives” Workshop Series, Session 1, University of Dayton School of Law, April 9, 2024
  • “Gov Con Law 101 for Companies That Aren’t Government Contractors,” Dayton Bar Association – Corporate Counsel Section, November 30, 2023
  • “Protecting Your Business from Common Government Contracting Pitfalls,” Thompson Hine “Tackle Tomorrow Today” Webinar Series, October 25, 2023
  • “Hot Topics in Health Care Privacy Law,” Thompson Hine “Tackle Tomorrow Today” Webinar Series, September 26, 2023
  • Government Contractor Briefing, November 15, 2022
  • “Get Paid: Collecting Payment on Government Construction Projects,” Dayton Human Relations Council, Subcontractor Meeting, June 29, 2021
  • “Product Pricing Pitfalls During a Pandemic: From Sweepstakes and Contests to Discounting, Price Discrimination and Price Gouging,” Thompson Hine Webinar, June 16, 2020
  • Selected for inclusion in The Best Lawyers in America® 2027 for Commercial Litigation
  • AFCEA Distinguished Young Professional Award, 2025
  • Dayton Business Journal, Rising Star of Law, Class of 2025
  • Included in the 2021 to 2025 editions of Best Lawyers: Ones to Watch® in America for Commercial Litigation and Criminal Defense: White-Collar
  • Named to Lawyers of Color’s Hot List 2020
  • Dayton Bar Association’s Bar Briefs Rising Star of the Month, December 2020
  • Joseph Cinque Award, Black Law Students Association, University of Dayton School of Law, 2019
  • Thompson Hine Diversity Champion Award, 2019

Professional Associations

  • Leadership Council on Legal Diversity (LCLD), Fellow, 2024
  • Dayton Bar Association, Board of Trustees Treasurer, 2022-2024
  • Federal Court Local Rules Committee for the Southern District of Ohio, 2021-present
  • Greater Dayton Diversity, Equity, & Inclusion Legal Roundtable, Founding Member, 2018-2023
  • Dayton Area Mock Interview Program, Founder, 2018-2023
  • Dayton Area Diversity Summer Clerkship Program, Co-Founder, 2015-2023
  • Ohio Supreme Court Board on the Unauthorized Practice of Law, Board of Commissioners, 2018-2021
  • Ohio State Bar Association Leadership Academy, Class of 2020
  • Dayton Bar Association Leadership Development, Class of 2015

Community Involvement

  • The Air Force Museum Foundation, Board of Trustees, November 2024-present
  • AFCEA, Dayton-Wright Chapter, Vice Chair Emerging Leaders Committee, 2023-present
  • Wesley Community Center, Board of Trustees, 2017-2021
  • UpDayton, Board Member, 2014-2018
  • City of Dayton Neighborhood Leadership Institute, Class of 2017

Education

  • University of Toledo College of Law, J.D., 2013,
    magna cum laude
    ,

    Order of the Coif

  • Bowling Green State University, B.S.Ed., 2009

Bar Admissions

  • Ohio

Court Admissions

  • U.S. District Court for the Northern District of Ohio
  • U.S. District Court for the Southern District of Ohio
  • U.S. Court of Federal Claims