Atty. James Patrick Shannon

Atty. James Patrick Shannon

James Patrick Shannon is a lawyer practicing public finance, municipal law, business law and 2 other areas of law. James received a A.B. degree from University of Detroit in 1971, and has been licensed for 51 years.

Portland Portland 51 yrs experience 51 year
Call (971) 396-5911 Book Appointment

Profile Summary

About James Patrick Shannon at a glance

James Patrick Shannon is a Member based in Portland, Oregon, practicing at Mersereau & Shannon LLP. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on business, tax, and government. Admitted to practice in Michigan (1975), Colorado (1982), Oregon (1983), and New Jersey (1987). Educated at University of Denver (LL.M., 1983) and University of Detroit (A.B., 1971). Active member of Multnomah County and American Bar Associations Oregon State Bar State Bar of Michigan National Association of Bond Lawyers Oregon Municipal Finance Officers Association. Serands clients in Portland, OR and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • James Patrick Shannon is a lawyer practicing public finance, municipal law, business law and 2 other areas of law
  • James received a A.B. degree from University of Detroit in 1971, and has been licensed for 51 years
  • James practices at Mersereau & Shannon LLP in Portland, OR

Practice Areas Explained

James Patrick Shannon's Areas of Practice

Each practice area below reflects the types of cases James Patrick Shannon 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.

James Patrick Shannon is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Oregon →

Tax Law

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

James Patrick Shannon is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Oregon →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

James Patrick Shannon is one of 132,225 government attorneys indexed nationally. Browse government 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 James Patrick Shannon

Where is James Patrick Shannon's law office located?
James Patrick Shannon's law practice is located in Portland, Oregon. The firm is Mersereau & Shannon LLP. You can contact the office directly through this profile page.
What practice areas does James Patrick Shannon handle?
James Patrick Shannon focuses on business, tax, government. Each practice area listed reflects experience handling cases of that type in Oregon.
How long has James Patrick Shannon practiced law?
James Patrick Shannon has 51+ years of legal experience and has been licensed since 1975.
Where did James Patrick Shannon go to law school?
James Patrick Shannon earned their education at (LL.M., 1983); (A.B., 1971).
How can I contact James Patrick Shannon for a consultation?
You can contact James Patrick Shannon 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

LL.M.
University of Denver
- 1983
A.B.
University of Detroit
- 1971

Bar Admissions

Michigan
Admitted: 1975
Colorado
Admitted: 1982
Oregon
Admitted: 1983
New Jersey
Admitted: 1987

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