Atty. William C Campbell

Atty. William C Campbell

Mr. William C Campbell is a lawyer practicing antitrust & trade law, business, corporate finance and 2 other areas of law.

Portland Portland 47 yrs experience 47 year
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Profile Summary

About William C Campbell at a glance

William C Campbell is a Partner based in Portland, Oregon, practicing at Ater Wynne LLP. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on business and ip. Admitted to practice in Oregon (1979). Educated at Yale Law School (J.D., 1979) and Yale University (B.A., 1975). Recognitions include AV Preeminent. Active member of Chair, Committee on Foreign and International Law, 1982-1983, Multnomah County, American and International Bar Associations Oregon State Bar. Serands clients in Portland, OR and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. William C Campbell is a lawyer practicing antitrust & trade law, business, corporate finance and 2 other areas of law
  • William received a B.A. degree from Yale University in 1975, and has been licensed for 47 years
  • William practices at Ater Wynne LLP in Portland, OR

Practice Areas Explained

William C Campbell's Areas of Practice

Each practice area below reflects the types of cases William C Campbell 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.

William C Campbell 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.

William C Campbell is one of 106,079 ip attorneys indexed nationally. Browse ip 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 William C Campbell

Where is William C Campbell's law office located?
William C Campbell's law practice is located in Portland, Oregon. The firm is Ater Wynne LLP. You can contact the office directly through this profile page.
What practice areas does William C Campbell handle?
William C Campbell focuses on business, ip. Each practice area listed reflects experience handling cases of that type in Oregon.
How long has William C Campbell practiced law?
William C Campbell has 47+ years of legal experience and has been licensed since 1979.
Where did William C Campbell go to law school?
William C Campbell earned their education at (J.D., 1979); (B.A., 1975).
How can I contact William C Campbell for a consultation?
You can contact William C Campbell 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 William C Campbell received?
William C Campbell's notable recognition includes: AV Preeminent.

Education

J.D.
Yale Law School
- 1979
B.A.
Yale University
- 1975

Awards

AV Preeminent

Bar Admissions

Oregon
Admitted: 1979

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