Legal research for Oregon law firms - Portland, Salem, Eugene and Bend
By LegiMatch Research Team · Published October 16, 2026 · 2 min read
Short answer: Oregon research starts with the Oregon Supreme Court and the Oregon Court of Appeals. Federal matters go to one federal district and then the Ninth Circuit in San Francisco. Negligence claims are governed by modified comparative fault (51% bar).
Oregon's courts
| Court | Role |
|---|---|
| Oregon Supreme Court | Highest court; binds every Oregon court |
| Oregon Court of Appeals | Most appeals |
| Oregon Tax Court | Tax appeals |
| Trial courts | Circuit courts |
Research notes
The Oregon Court of Appeals decides many cases with an affirmance without opinion (AWOP), which has no reasoning to cite. Focus research on written opinions.
Fault rule for personal injury
Oregon applies modified comparative fault (51% bar): a plaintiff recovers, reduced by their share of fault, as long as their fault isn't greater than the defendants'.
Federal courts in Oregon
| District | Main cities |
|---|---|
| District of Oregon | Portland, Eugene, Medford, Pendleton |
Appeals go to the Ninth Circuit in San Francisco.
Where to find decisions and statutes
The regional reporter for Oregon is P.3d. Statutory research runs through the Oregon Revised Statutes (oregonlegislature.gov); confirm the effective date of any section you rely on.
A research example
- Start from the facts. "A Portland bicyclist was doored by a parked rideshare passenger in a marked bike lane."
- Prefer Oregon's highest court, then published appellate decisions closest to your facts.
- Check ORS 31.600 on comparative negligence and ORS 811.490 on opening vehicle doors, and confirm each case is still good law.
LegiMatch can shorten that search: describe the matter or upload the complaint, then review up to 100 similar decisions with a visible match score and a link to each opinion. It supports your judgment rather than replacing it.
More states: courts in every major US city.
Frequently asked questions
What is an AWOP?
An affirmance without opinion by the Oregon Court of Appeals; it resolves the appeal but provides no reasoning to rely on.
What negligence rule does Oregon use?
Modified comparative negligence under ORS 31.600: a plaintiff recovers if their fault isn't greater than the defendants' combined fault, with damages reduced.
Which federal circuit covers Oregon?
The Ninth Circuit, which sits in San Francisco.
Sources
- Oregon court system and legislature websites
- United States Courts, court locator (uscourts.gov)
This article is general information about legal research, not legal advice. Verify every authority before relying on it.
All articlesMore from the blog
- Can AI find a case from its facts alone? A published test of similar-case searchWe rewrote 80 real court decisions in plain words, removed every name and citation, and measured how often LegiMatch Case Match finds the exact original among 4.7 million U.S. court decisions - with the method, so anyone can repeat it.
- Cases you may have missed - finding authority your brief doesn't citeAfter LegiMatch checks your brief, one click runs a fact-based search on the brief itself and lists strong matching decisions you haven't cited - how it works, what it costs and how to use the results.
- How accurate is LegiMatch Brief Check? A blind test on real court documentsOur blind test of the brief checker, with a detection rate for each kind of citation mistake - wrong court, year, pin cite, case name, quotation, invented case, wrong volume, swapped citations and statutes - plus how often it wrongly flags correct citations, measured on real court decisions and U.S. Supreme Court briefs nobody had used before.