Atty. Mark Earl Deffner

Atty. Mark Earl Deffner

Mark Earl Deffner is a lawyer practicing patent application, patent infringement, intellectual property and 7 other areas of law. Mark received a M.S. degree from Northwestern University in 1998, and has been licensed for 24 years.

Minneapolis Minneapolis 24 yrs experience 24 year
Call (612) 714-9546 Book Appointment

Profile Summary

About Mark Earl Deffner at a glance

Mark Earl Deffner is a Member based in Minneapolis, Minnesota, practicing at Pauly, DeVries Smith & Deffner, L.L.C.. They have 24+ years of legal experience, licensed to practice since 2002. Their practice focuses on patent and ip. Admitted to practice in Minnesota (2002). Educated at University of Minnesota (J.D., 2002) and Northwestern University (M.S. Biotechnology, 1998). Serands clients in Minneapolis, MN and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Earl Deffner is a lawyer practicing patent application, patent infringement, intellectual property and 7 other areas of law
  • Mark received a M.S. degree from Northwestern University in 1998, and has been licensed for 24 years
  • Mark practices at Pauly, DeVries Smith & Deffner, L.L.C. in Minneapolis, MN

Practice Areas Explained

Mark Earl Deffner's Areas of Practice

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

Patent Law

Mark Earl Deffner is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Minnesota →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Mark Earl Deffner is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Minnesota →

Jurisdictional Context

Why local counsel matters in Minnesota

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

Looking for additional Minnesota attorneys? Browse all attorneys in Minneapolis or all attorneys in Minnesota.

Frequently Asked

Common questions about Mark Earl Deffner

Where is Mark Earl Deffner's law office located?
Mark Earl Deffner's law practice is located in Minneapolis, Minnesota. The firm is Pauly, DeVries Smith & Deffner, L.L.C.. You can contact the office directly through this profile page.
What practice areas does Mark Earl Deffner handle?
Mark Earl Deffner focuses on patent, ip. Each practice area listed reflects experience handling cases of that type in Minnesota.
How long has Mark Earl Deffner practiced law?
Mark Earl Deffner has 24+ years of legal experience and has been licensed since 2002.
Where did Mark Earl Deffner go to law school?
Mark Earl Deffner earned their education at (J.D., 2002); (M.S. Biotechnology, 1998).
How can I contact Mark Earl Deffner for a consultation?
You can contact Mark Earl Deffner 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.

Education

J.D.
University of Minnesota
- 2002
M.S. Biotechnology
Northwestern University
- 1998

Bar Admissions

Minnesota
Admitted: 2002

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