Jonathan A. Barnes


  • Office Contact Info
  • Biography

    Jonathan A. Barnes is a Partner in the Washington, D.C. and Baltimore offices of GRSM and is a member of the Commercial Litigation and Healthcare practice groups. His experience spans complex business litigation matters involving healthcare, employment, professional liability, insurance coverage, and products liability.  Jonathan advises clients on a wide range of matters and assists in resolving, prosecuting, and defending against lawsuits, arbitrations, and appeals.  He also has experience representing businesses and individuals in matters involving consumer protection, cyber security and privacy risks, breach of contract, fraud, negligence, and employment.

    Jonathan holds a Bachelor of Arts in Philosophy from New York University. He earned his Juris Doctor from the George Washington University School of Law. During law school, he served as a judicial intern to the Honorable Lee F. Satterfield, the former Chief Judge of the District of Columbia Superior Court. Upon graduation, Jonathan served as the first law clerk to the Honorable Richard E. Jordan of the Circuit Court for Montgomery County Maryland.

    Jonathan worked for several law firms prior to joining GRSM, including a boutique commercial litigation firm and a medical malpractice law firm, after spending several years in the public sector as an Assistant State’s Attorney for the State’s Attorneys Office of Montgomery County Maryland.


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


    • Montgomery County Bar Association Leadership Development Academy, 2013-2014
    • Member, Montgomery County Bar Association, 2009-Present
    • Member, J. Franklyn Bourne Society Member, 2010-Present
    • Member, Maryland State Bar Association, 2011-Present
    • Member, Montgomery County Inns of Court, 2011-2012, 2013-2014
    • Guest Lecturer, The Catholic University of America-Columbus School of Law: Becoming a Lawyer, 2010-2014
    *Not admitted to practice in Virginia
  • Practice Areas
  • Representative Experience

    Representative Experience 

    • Successfully defended hospital, including its healthcare providers, in five day jury trial before the US District Court for the District of Maryland alleging medical malpractice.

    • Successfully represented healthcare providers in numerous administrative hearings throughout Maryland and Washington, DC.

    • Successfully defended insurance agency and insurance agent in disputes arising from national multi-million dollar Ponzi scheme.

    • Represented inventor of high-frequency commodities trading platform in bet-the-company litigation concerning ownership of key intellectual property rights and membership interests in successful trading firm.

    • Represented victim of business fraud against perpetrator of real estate investment scheme.

    • Successfully represented insurance agencies and healthcare providers in professional liability matters.

    • Obtained successful verdicts in numerous civil bench and jury trials.

  • Education


    J.D., The George Washington University School of Law, 2008

    B.A., New York University, 2002