Atty. Len Cason

Atty. Len Cason

Len Cason is a lawyer practicing estate planning, tax law, tax controversies and 1 other area of law. Len has been licensed for 54 years.

Oklahoma City Oklahoma City 54 yrs experience 54 year
Call (405) 877-1084 Book Appointment

Profile Summary

About Len Cason at a glance

Len Cason is a Partner based in Oklahoma City, Oklahoma, practicing at Hartzog Conger Cason, LLP. They have 54+ years of legal experience, licensed to practice since 1972. Their practice focuses on irs, estate planning, business, and tax. Admitted to practice in Oklahoma (1972), California (1975), and Texas (1976). Educated at Southern Methodist University (LL.M. Taxation, 1979). Recognitions include AV Preeminent. Active member of Oklahoma (Chairman, Tax Section, 1983) and American Bar Associations State Bar of Texas State Bar of California and Fellow: American College of Tax Counsel. Serands clients in Oklahoma City, OK and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Len Cason is a lawyer practicing estate planning, tax law, tax controversies and 1 other area of law
  • Len has been licensed for 54 years
  • Len practices at Hartzog Conger Cason, LLP in Oklahoma City, OK

Practice Areas Explained

Len Cason's Areas of Practice

Each practice area below reflects the types of cases Len Cason handles, with a brief overview of what that area of law covers.

IRS Disputes & Audits

Len Cason is one of 2,917 irs attorneys indexed nationally. Browse irs attorneys in Oklahoma →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Len Cason is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Oklahoma →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Len Cason is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Oklahoma →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Len Cason is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Oklahoma →

Jurisdictional Context

Why local counsel matters in Oklahoma

Practicing law in Oklahoma. Legal matters in Oklahoma are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Oklahoma City are typically filed in the local municipal court or the appropriate Oklahoma state district court, depending on subject matter and amount in controversy. An attorney licensed in Oklahoma brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Oklahoma courts without local counsel or pro hac vice admission.

Looking for additional Oklahoma attorneys? Browse all attorneys in Oklahoma City or all attorneys in Oklahoma.

Frequently Asked

Common questions about Len Cason

Where is Len Cason's law office located?
Len Cason's law practice is located in Oklahoma City, Oklahoma. The firm is Hartzog Conger Cason, LLP. You can contact the office directly through this profile page.
What practice areas does Len Cason handle?
Len Cason focuses on irs, estate planning, business, tax. Each practice area listed reflects experience handling cases of that type in Oklahoma.
How long has Len Cason practiced law?
Len Cason has 54+ years of legal experience and has been licensed since 1972.
Where did Len Cason go to law school?
Len Cason earned their education at (LL.M. Taxation, 1979).
How can I contact Len Cason for a consultation?
You can contact Len Cason directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Len Cason received?
Len Cason's notable recognition includes: AV Preeminent.

Education

LL.M. Taxation
Southern Methodist University
- 1979

Awards

AV Preeminent

Bar Admissions

Oklahoma
Admitted: 1972
California
Admitted: 1975
Texas
Admitted: 1976

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