Atty. Johnathan E Mansfield

Atty. Johnathan E Mansfield

Mr. Johnathan E Mansfield is a lawyer practicing commercial litigation, industry initiatives and trade organizations, intellectual property and 1 other area of law.

Portland Portland 32 yrs experience 32 year
Call (206) 693-2720 Book Appointment

Profile Summary

About Johnathan E Mansfield at a glance

Johnathan E Mansfield is a Member based in Portland, Oregon, practicing at Mansfield Law. They have 32+ years of legal experience, licensed to practice since 1994. Their practice focuses on business, ip, and litigation. Admitted to practice in District of Columbia (1994), Washington (1998), California (2001), and Oregon U.S. Supreme Court U.S. Court of Appeals, Ninth and Federal Circuits U.S. District Court, Dis (2005). Educated at Cornell University (J.D., 1993) and Portland State University (M.S. Political, 1990). Recognitions include AV Preeminent. Serands clients in Portland, OR and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Johnathan E Mansfield is a lawyer practicing commercial litigation, industry initiatives and trade organizations, intellectual property and 1 other area of law
  • Johnathan E received a M.S. degree from Portland State University in 1990, and has been licensed for 32 years
  • Johnathan E practices at Mansfield Law in Portland, OR

Practice Areas Explained

Johnathan E Mansfield's Areas of Practice

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

Business & Corporate Law

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

Johnathan E Mansfield is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Oregon →

Intellectual Property

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

Johnathan E Mansfield is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Oregon →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Johnathan E Mansfield is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Oregon →

Jurisdictional Context

Why local counsel matters in Oregon

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

Looking for additional Oregon attorneys? Browse all attorneys in Portland or all attorneys in Oregon.

Frequently Asked

Common questions about Johnathan E Mansfield

Where is Johnathan E Mansfield's law office located?
Johnathan E Mansfield's law practice is located in Portland, Oregon. The firm is Mansfield Law. You can contact the office directly through this profile page.
What practice areas does Johnathan E Mansfield handle?
Johnathan E Mansfield focuses on business, ip, litigation. Each practice area listed reflects experience handling cases of that type in Oregon.
How long has Johnathan E Mansfield practiced law?
Johnathan E Mansfield has 32+ years of legal experience and has been licensed since 1994.
Where did Johnathan E Mansfield go to law school?
Johnathan E Mansfield earned their education at (J.D., 1993); (M.S. Political, 1990).
How can I contact Johnathan E Mansfield for a consultation?
You can contact Johnathan E Mansfield 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 Johnathan E Mansfield received?
Johnathan E Mansfield's notable recognition includes: AV Preeminent.

Education

J.D.
Cornell University
- 1993
M.S. Political
Portland State University
- 1990

Awards

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1994
Washington
Admitted: 1998
California
Admitted: 2001
Oregon U.S. Supreme Court U.S. Court of Appeals, Ninth and Federal Circuits U.S. District Court, Dis
Admitted: 2005

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