Monell claims, qualified immunity, and prevailing-party fees.
Oregon courts apply both the U.S. Constitution and the Oregon Constitution to civil rights & § 1983 claims. When state protections are broader than federal ones, Oregon judges follow the state rule. When they are equal or narrower, federal precedent controls under the Supremacy Clause.
Federal cases governing civil rights & § 1983 include controlling U.S. Supreme Court decisions and binding precedent from the federal circuit covering Oregon. Civil remedies most often proceed under 42 U.S.C. § 1983, with defenses including qualified immunity.
Legal information, not legal advice. For advice on your situation, consult a licensed attorney in Oregon.