Oregon Revised Statutes Procedure in Criminal Matters Generally § 147.522

(1) A victim or prosecuting attorney who seeks a determination of an issue involving a right granted by section 42 or 43, Article I of the Oregon Constitution, that will impact the conduct of the trial shall file a motion within 35 days of the arraignment, or of the defendant's entry of the initial plea on an accusatory instrument, whichever is sooner, unless the factual basis of the determination becomes known to the movant at a later time and could not reasonably have been discovered earlier, in which case the motion must be filed promptly.

(2) A defendant who seeks to challenge the designation of a person as a victim shall:

(3) A defendant who seeks to object to a victim's presence at trial shall file a motion within 35 days of arraignment, or of the defendant's entry of the initial plea on an accusatory instrument, whichever is sooner, unless the factual basis of the objection could not reasonably be discovered earlier, in which case the motion must be filed promptly.

(4) The court shall conduct a hearing on a motion filed under this section and rule on the motion as soon as practicable. The court may not grant relief under subsection (2) or (3) of this section unless the designation of a person as a victim or the victim's presence at trial violates the Oregon Constitution or the United States Constitution.