Atty. Mr Patrick Derdenger

Atty. Mr Patrick Derdenger

Mr Patrick Derdenger is a lawyer practicing tax, state & local tax, irs controversy & tax litigation and 4 other areas of law. Patrick received a B.A. degree from Loyola University of Los Angeles in 1968, and has been licensed for 52 years.

Phoenix Phoenix 52 yrs experience 52 year
Call (904) 850-9533 Book Appointment

Profile Summary

About Mr Patrick Derdenger at a glance

Mr Patrick Derdenger is a Partner based in Phoenix, Arizona, practicing at Steptoe LLP. They have 52+ years of legal experience, licensed to practice since 1974. Their practice focuses on real estate, tax, tax litigation, estate litigation, and internet. Admitted to practice in California (1974), Arizona (1979), and Oregon (1979). Educated at The George Washington University (LL.M., 1977) and Loyola University of Los Angeles (B.A. University, 1968). Recognitions include AV Preeminent. Serands clients in Phoenix, AZ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr Patrick Derdenger is a lawyer practicing tax, state & local tax, irs controversy & tax litigation and 4 other areas of law
  • Patrick received a B.A. degree from Loyola University of Los Angeles in 1968, and has been licensed for 52 years
  • Patrick practices at Steptoe LLP in Phoenix, AZ and 1 other location

Practice Areas Explained

Mr Patrick Derdenger's Areas of Practice

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

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Mr Patrick Derdenger is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Arizona →

Tax Law

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

Mr Patrick Derdenger is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Arizona →

Tax Litigation

Mr Patrick Derdenger is one of 3,110 tax litigation attorneys indexed nationally. Browse tax litigation attorneys in Arizona →

Estate & Trust Litigation

Mr Patrick Derdenger is one of 20,023 estate litigation attorneys indexed nationally. Browse estate litigation attorneys in Arizona →

Internet & Cyber Law

Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.

Mr Patrick Derdenger is one of 17,958 internet attorneys indexed nationally. Browse internet attorneys in Arizona →

Jurisdictional Context

Why local counsel matters in Arizona

Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Phoenix are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona 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 Arizona courts without local counsel or pro hac vice admission.

Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.

Frequently Asked

Common questions about Mr Patrick Derdenger

Where is Mr Patrick Derdenger's law office located?
Mr Patrick Derdenger's law practice is located in Phoenix, Arizona. The firm is Steptoe LLP. You can contact the office directly through this profile page.
What practice areas does Mr Patrick Derdenger handle?
Mr Patrick Derdenger focuses on real estate, tax, tax litigation, estate litigation, internet. Each practice area listed reflects experience handling cases of that type in Arizona.
How long has Mr Patrick Derdenger practiced law?
Mr Patrick Derdenger has 52+ years of legal experience and has been licensed since 1974.
Where did Mr Patrick Derdenger go to law school?
Mr Patrick Derdenger earned their education at (LL.M., 1977); (B.A. University, 1968).
How can I contact Mr Patrick Derdenger for a consultation?
You can contact Mr Patrick Derdenger 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 Mr Patrick Derdenger received?
Mr Patrick Derdenger's notable recognition includes: AV Preeminent.

Education

LL.M.
The George Washington University
- 1977
B.A. University
Loyola University of Los Angeles
- 1968

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1974
Arizona
Admitted: 1979
Oregon
Admitted: 1979

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