Larry D. Lahman

Partner

 580-234-5144 or 1-800-287-5144

 580-234-8890

Professional Experience

Lahman is the Senior Partner in the oldest law firm in Oklahoma – Mitchell DeClerck – joining the firm in 1975. Lahman has an active and varied practice currently handling complex class actions, qui tam cases under state and federal false claims acts, unclaimed property matters and bankruptcy. Lahman’s practice uniquely incorporates his knowledge of computer programing, big data and data analysis originating 50 years ago with his first programing course in graduate school.

Lahman is admitted to practice before the United States Supreme Court, the Oklahoma Supreme Court, all Oklahoma trial courts and 11 of the 13 United States Courts of Appeal. He has litigated cases in state or federal court in Alabama, District of Columbia, Georgia, Kansas, Massachusetts, Oklahoma, Oregon, Pennsylvania, Rhode Island and Texas.

Lahman has a BS degree in chemistry, mathematics and physics from Northwestern Oklahoma State University, a JD in law from the University of Oklahoma College of Law and attended graduate school at Oklahoma State University as well as the University of Delaware, the University of Maryland, North Carolina State University, Central Oklahoma State University and Phillips University. He has over 300 academic hours at seven colleges and universities.

Lahman served nearly four years on active duty as a paratrooper and volunteered for 18 months service in Vietnam with the Army Special Forces commonly known as the Green Berets. While in Vietnam and other locations in Southeast Asia, he served as Acting Commander of an 800 man force involved in actual combat in enemy controlled areas on the Cambodian Border. He has two Bronze Stars, an Air Medal, two Army Commendation Medals and other awards and decorations including the Combat Infantryman's Badge for actions in Vietnam. He was promoted from Private during 28 years of service to the rank of Lieutenant Colonel nearly all of which were with the Army Special Forces both active and reserve and is now retired.

Practice Areas
  • Bankruptcy
  • Business Bankruptcy
  • Chapter 13 Bankruptcy
  • Chapter 7 Bankruptcy
  • Class Action
  • Consumer Bankruptcy
  • False Claims Act Litigation
  • Qui Tam Litigation
  • Unclaimed Property
  • Whistle Blower
Education
Law School:

JD in Law, University of Oklahoma College of Law

Graduate:

Chemistry, Oklahoma State University

Undergraduate:

BS in Chemistry, Mathematics and Physics, Northwestern Oklahoma State University

Additional Study:

University of Maryland, University of Delaware, Phillips University, Central Oklahoma State University and North Carolina State University

Bar Admissions
  • United States Supreme Court
  • Oklahoma Supreme Court
  • All Oklahoma State Courts
  • 3rd Circuit of the United States Court of Appeals
  • 4th Circuit of the United States Court of Appeals
  • 5th Circuit of the United States Court of Appeals
  • 6th Circuit of the United States Court of Appeals
  • 7th Circuit of the United States Court of Appeals
  • 8th Circuit of the United States Court of Appeals
  • 9th Circuit of the United States Court of Appeals
  • 10th Circuit of the United States Court of Appeals
  • 11th Circuit of the United States Court of Appeals
  • DC Circuit of the United States Court of Appeals
  • Federal Circuit of the United States Court of Appeals
  • Alabama, Pro Hac
  • District of Columbia, Pro Hac
  • Georgia, Pro Hac
  • Kansas, Pro Hac
  • Massachusetts, Pro Hac
  • Oregon, Pro Hac
  • Pennsylvania, Pro Hac
  • Rhode Island, Pro Hac
  • Texas, Pro Hac

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