Oregon Service of Process Rules and Requirements
Oregon Service of Process Rules for Civil Lawsuits
Service of process is the mechanism by which a defendant receives notice of a lawsuit. Oregon has specific statutory requirements governing how, when, and on whom service must be made. Compliance with these rules is essential—improper service can result in a judgment being overturned on appeal or a motion to quash being granted.
Personal Service (Hand Delivery)
Personal service is the most straightforward and reliable method of service under Oregon law. Under ORS 109.701(1), personal service is accomplished by delivering a copy of the summons and complaint directly to the defendant.
The server must hand the documents directly to the defendant—not leave them with a family member, leave them at the door, or mail them. The defendant must actually receive and accept the documents in hand. This creates the clearest record of service and provides the strongest basis for personal jurisdiction.
Any person who is at least 18 years old and not a party to the action can serve process by personal service (ORS 109.701). This includes private process servers, sheriff's deputies, and even friends or family members of the plaintiff (so long as they are not parties to the case).
Oregon-specific consideration: Oregon courts have been strict about what constitutes valid personal service. The server must be able to clearly identify that the documents were placed directly into the defendant's possession. If there is any question about whether the defendant actually received the documents, the service may be challenged.
Substituted Service
When personal service cannot be made despite reasonable efforts, substituted service may be available under ORS 109.701(2). This method allows service on someone other than the defendant, but only under specific circumstances.
Substituted service requires:
This is Oregon's equivalent to "service at the dwelling" allowed in many jurisdictions. The key difference is that Oregon requires both the in-hand delivery to another person and follow-up mailing to create valid substituted service.
Suitable age and discretion means someone who appears to be old enough to understand the importance of the documents and likely to deliver them to the defendant. A young child would not qualify; an adult household member or workplace employee generally would.
The mail must be sent via first-class mail (regular mail—not certified mail, though that would certainly satisfy this requirement as well). The mailing should occur promptly after the substituted service, typically within a few days.
Service by Mail
Oregon allows service by mail, but with limitations. Under ORS 109.701(3), a defendant may be served by mailing a copy of the summons and complaint to the defendant by any form of mail, provided the defendant has not appeared in the action and has not been served in person.
This creates a timing issue: you cannot lead with mail service if the defendant hasn't already appeared. However, once service has been attempted by other means, mail service becomes an option. The statute doesn't specify that mail must be certified or require return receipt; regular first-class mail satisfies the requirement.
Practical consideration: While the statute allows mail service, attorneys often choose certified mail with return receipt requested to create a documentable record. Regular mail is technically sufficient but leaves less evidence that the defendant actually received the summons.
Some practitioners wait for a returned receipt or evidence of delivery before relying on mail service. If using regular mail, maintain records showing the mailing date and address.
Service by Publication
Service by publication is a last resort, permitted only when personal service cannot be made with reasonable diligence and the court authorizes it. Under ORS 109.705, an attorney or party must file a motion for service by publication, supported by a declaration stating:
The court must approve the motion before publication begins. This is not something a party can do unilaterally.
Once approved, the summons must be published in a newspaper of general circulation in the county where the defendant last resided or was known to be located. Oregon Revised Statutes do not specify an exact number of publications, but standard practice is once per week for three consecutive weeks. The publication must be in a newspaper of general circulation—not an obscure publication or a legal-only newspaper (though legal newspapers are acceptable if they are truly newspapers of general circulation in that county).
After publication, the party must send a copy of the summons by first-class mail to the defendant's last known address.
Key limitation: Service by publication does not satisfy Oregon's long-arm statute requirements for exercising personal jurisdiction over out-of-state defendants in all cases. A court will likely deny such service unless minimum contacts exist under ORS 109.701(2)(e).
Service on Corporations and LLCs
Service on business entities follows distinct rules. Under ORS 109.701(4), a corporation, limited liability company, or other business entity can be served by serving its registered agent for service of process.
The registered agent is designated in corporate formation documents filed with the Oregon Secretary of State. If a corporation or LLC does not maintain a registered agent in Oregon, service may be made on any officer, manager, director, or agent located in Oregon.
Secretary of State service: If a business entity fails to maintain a registered agent and no officer, manager, director, or agent can be located in Oregon, service may be made on the Oregon Secretary of State under ORS 109.701(4)(b). When serving the Secretary of State, you must also mail a copy to the defendant by certified mail.
To determine the current registered agent, search the Oregon Secretary of State's business records database online at oregonsecretaryofstate.gov. This is free and essential before attempting service on any business entity.
Service on Government Entities
Government entities require special service procedures. Under ORS 109.701(5):
Additionally, copies must be sent by first-class mail to the agency's administrative office or chief administrative officer.
These requirements exist because government entities operate through officials, not individual people, and statutes specify who must receive notice on their behalf.
Service on Out-of-State Defendants (Long-Arm Statute)
Oregon's long-arm statute, codified in ORS 109.701(2)(e), permits service on persons not present in Oregon if they:
The statute requires "minimum contacts" with Oregon such that exercise of jurisdiction does not offend traditional notions of fair play and substantial justice—the constitutional standard from International Shoe Co. v. Washington.
Service on out-of-state defendants occurs through the Secretary of State. Under ORS 109.701(2)(e), the summons is served on the Secretary of State, with a copy mailed by certified mail to the defendant's last known address. Oregon law does not authorize service through an out-of-state agent or representative unless the defendant has appointed such an agent under statutes governing his or her business in Oregon.
Practical consideration: Before serving an out-of-state defendant, verify that jurisdictional facts exist under ORS 109.701(2)(e). If service is made without jurisdictional contacts, the defendant can move to quash service and dismiss the action.
Who Can Serve Process
Under ORS 109.701, any person at least 18 years old, not a party to the action, and not a party's attorney can serve process. This includes:
There is no requirement to use a sheriff or professional process server, though many attorneys do so to create a strong evidentiary record.
Non-attorney servers who are not professionally licensed still must properly execute an affidavit of service describing how and when service was made.
Time Limits for Completing Service
Under Oregon Rule of Civil Procedure 4.1(a), the summons must be served within 120 days after the complaint is filed. If service is not made within this period, the action may be dismissed without prejudice.
The court may extend this deadline for good cause shown. Extensions are common when defendants evade service or live out of state, and courts generally grant reasonable requests supported by declarations showing diligence.
If service cannot be made within 120 days, file a motion for extension of time to serve (ORCP 4.1(a)) before the deadline expires. Waiting until after 120 days have passed makes relief much harder to obtain.
Proof of Service / Affidavit of Service
The person who serves process must file an affidavit of service with the court, typically filed with the court within a few days after service is completed. Under ORCP 4.1(b), the affidavit must state:
This affidavit is the official record proving service. Without a filed affidavit, the court has no basis to assume service was proper.
For mail service, the affidavit should describe what documents were mailed, the date of mailing, the address to which mailed, and the method of mailing (regular mail, certified mail, etc.). For certified mail, attach the return receipt or post office tracking information as exhibits.
For personal service, the affidavit should describe how the server identified the defendant, the exact location and time of service, and any responses or statements from the defendant.
For substituted service, describe the unsuccessful attempts at personal service, the name and apparent age/discretion of the person who received the documents, the location where service occurred, and the date the copy was mailed.
Judges take affidavits of service seriously. Inaccurate or conclusory affidavits can be challenged, and false statements constitute perjury.
Defective Service and Motion to Quash
If service is improper, the defendant may file a motion to quash service under ORCP 7(d)(1). Defects in service are waived if the defendant fails to raise them in a pre-answer motion or within the first sentence of their answer. If preserved, the court will hold a hearing to determine whether service was proper.
Common defects include:
If the court finds service defective, the action is dismissed without prejudice. The plaintiff can refile and attempt service again.
Defendants cannot simply ignore a defective summons—they must file the motion to quash or they waive the objection.
Evasion of Service and Alternative Methods
When a defendant evades service, Oregon courts may authorize alternative methods under ORCP 4.1. Courts have approved service by email, text message, or even service at a defendant's attorney's office when a defendant has been dodging traditional service.
These alternatives require:
Courts grant these motions more readily in cases where bad faith evasion is clear.
Service in Special Proceedings
Divorce and family law cases follow ORCP 4 but are governed by additional requirements in ORS Chapter 109. Service is on the respondent (defendant) personally.
Eviction cases are governed by ORS Chapter 105. Service requirements are more flexible—a landlord can serve by personal service, substituted service, or posting and mailing under ORS 105.135.
Restraining orders and protective orders under ORS Chapter 107 allow service by personal service, publication, or mail without the same formalities as civil cases, because of the emergency nature of these proceedings.