John D. Mashburn

John Mashburn has over thirty years experience successfully representing a diverse clientele in a broad range of civil matters both in litigation and in providing legal counsel outside of litigation. John has extensive, successful experience in commercial litigation; bankruptcy litigation; creditor, bankruptcy estate and bankruptcy trustee representation in all areas of bankruptcy; employment claims; representation of non-profit organizations and educational institutions; personal injury litigation including insurance bad faith, toxic torts, fire injuries and property loss claims; arbitration and mediation; and appeals before all Courts including the U.S. Supreme Court.

John has tried complex civil cases against General Motors, Black & Decker, large hospitals, international manufacturers and other corporate giants. John was also the lead counsel briefing and arguing before the United States Supreme Court, which resulted in a unanimous ruling in our client’s favor. He has tried numerous state, federal and federal bankruptcy cases. He has multiple published opinions (which serve as authority for other courts) from appellate cases where he prevailed and often established new law. Mr. Mashburn has extensive experience in creditor and bankruptcy law and has served as a U.S. Bankruptcy Trustee since 2004, administering over 8,000 cases, and has served on multiple Creditors’ Committees and Trusts. In cases where John served as a Trustee or member of a Creditors’ Trust, he has recovered and paid to creditors in excess of $45,000,000. John has also appeared as an expert witness and has lectured in multiple Continuing Education classes.

Education

  • Juris Doctor (University of Oklahoma, 1988)
  • Master of Science in Business (Virginia Tech, 1983)
  • Bachelor of Arts in Business (Virginia Tech, 1981)

Bar Admissions

  • Oklahoma (1988)
  • U.S. District Courts for the Western, Eastern, and Northern Districts of Oklahoma
  • U.S. Court of Appeals for the Tenth Circuit
  • United States Supreme Court

Professional Memberships

  • Oklahoma Bar Association
  • National Association of Bankruptcy Trustees

Awards and Honors

John Mashburn is rated AV by the Martindale-Hubbell Peer Review Ratings System. Martindale-Hubbell’s AV Rating is the highest level of professional excellence at which a firm can be ranked by its peers

Representative Matters