Isaac Ellis’s practice focuses on litigation and internal investigations. Isaac has served as trial counsel in jury and non-jury trials in state and federal courts. His breadth of experience includes commercial and business disputes, construction, energy, class-action defense, zoning and real estate, and other complex litigation. He also devotes his practice to internal investigations for corporate clients, including whistleblower complaints, personnel-related matters, and regulatory compliance. Isaac is also chair of the firm’s Recruiting Committee and serves on its Editorial Committee.

Before joining the firm, Isaac served a two-year term as Judicial Law Clerk to the Honorable John E. Dowdell in the Northern District of Oklahoma. Since that time, Isaac has remained heavily involved in both federal litigation and the federal bar. He currently serves on the Northern District of Oklahoma Local Rules Advisory Committee and Civil Rules Subcommittee, which advises the court regarding proposed rule changes and other matters. Isaac also serves the Court as an Adjunct Settlement Judge. He previously served as President of the Federal Bar Association – Northern and Eastern Oklahoma Chapter and currently serves as the Chapter’s National Delegate.

Isaac devotes time to serving the Tulsa community through volunteering. He has served as President of the Tulsa Library Trust, which receives and administers donations for services and programs beyond the funding capabilities of the Tulsa City-County Library system. He's also an Advisory Committee member for This Machine, Tulsa’s local non-profit bicycle sharing service.

Isaac received his Juris Doctor degree with honors from the University of Oklahoma, where he was selected for membership in the Order of the Coif and Order of the Barristers, and received several awards while participating in advocacy competitions.

Best Lawyers 2024 Badge - Isaac Ellis


  • Served as co-counsel in federal jury trial involving employment claims by former company executive claiming wrongful termination
  • Served as lead trial counsel in non-jury trial of unjust enrichment claim involving real estate dispute
  • Represented client in declaratory judgment action regarding insurance coverage in effort to secure $22 million in additional coverage
  • Investigated whistleblower complaint alleging federal regulatory and safety violations in large scale construction project
  • Investigated whistleblower complaint alleging large-scale falsification of accounting data and K-1 information
  • Investigated allegation of misrepresentations made to federal regulatory entity involving employees altering test units prior to regulatory inspection 

Honors & Leadership

Honors & Recognitions

Listed in Best Lawyers in America© (2020-present)

Federal Judicial Clerkship, Hon. John E. Dowdell, Northern District of Oklahoma

Oklahoma SuperLawyers Rising Star

Articles Editor, American Indian Law Review

Order of the Coif

Order of the Barristers

Phi Delta Phi International Legal Fraternity

Community & Professional

Northern District of Oklahoma Local Rules Committee and Civil Rules Subcommittee Member

Past-President, Federal Bar Association – Northern and Eastern Oklahoma Chapter

President, Tulsa Library Trust

This Machine Tulsa, Advisory Committee Member and former Vice-Chair

Member of the Conner & Winters Business Development, Recruiting, and Editorial Committees

American Bar Association

Tulsa County Bar Association


Alerts & Publications


  • Judicial Law Clerk to the Honorable John E. Dowdell, United States District Judge for the Northern District of Oklahoma


University of Oklahoma, J.D., with honors, 2010

Southeastern Oklahoma State University, B.A., 2007


  • Oklahoma 
  • U.S. District Court, N.D. of Oklahoma 
  • U.S. District Court, W.D. of Oklahoma 
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