Before a protection order can take effect, it must be served upon the abuser. In most states, protection orders are served by the sheriff department. You can contact the clerk of the court in the court that issued your order to find out the procedure for service if you are unsure. For a list of Oregon courts, check the OR Courthouse Locations page on our site. Listed below are telephone numbers and addresses for sheriff departments in Oregon. You may be able to find more up-to-date listings for sheriff departments on the Oregon Sheriffs Association website.