Jonathan S. Leinheardt

jonathan-outJonathan S. Leinheardt brings compassionate and diverse experience to the practice of law. Formerly an Assistant District Attorney in New York City (Queens County), Jonathan focuses on criminal defense, from pre-charge investigation through trial and appeal. He also specializes in probate law (administration and litigation), with an emphasis on conservatorships and guardianships, having frequently served the role of Court-appointed counsel of incapacitated persons. Jonathan also practices in all areas of family law, including complex divorce, property division, parental responsibilities (decision-making and parenting time), child support, and maintenance (spousal support). Jonathan also has substantial civil litigation experience, representing both plaintiffs and defendants in a wide-range of disputes, including personal injury, business, employment, and real estate.

Year Joined Organization


Areas of Practice

  • Criminal Defense
  • Probate
  • Family Law
  • Civil Litigation

Bar Admissions

  • New York, 1992
  • Colorado, 2003
  • U.S. District Court Eastern District of New York, 1993
  • U.S. District Court Southern District of New York, 1993
  • U.S. District Court District of Colorado, 2004
  • U.S. Court of Appeals 2nd Circuit, 1993


  • Brooklyn Law School, Brooklyn, New York,
    1991 J.D.
  • Ithaca College, Ithaca, New York,
    1988 B.S.

Professional Associations and Memberships

  • Colorado Bar Association
  • 1st Judicial Bar Association
  • Co-Chair of Elder Law Committee, Boulder County Bar Association

Learn more about Jonathan S. Leinheardt