Certificate of Service

CERTIFICATE OF SERVICE

State of Oklahoma — District Court

JURISDICTION NOTE: This Certificate of Service template is designed for use in Oklahoma state court civil proceedings governed by Title 12 of the Oklahoma Statutes and the Oklahoma Pleading Code. For cases in the U.S. District Courts for the Northern, Eastern, or Western Districts of Oklahoma, consult the Federal Rules of Civil Procedure and applicable local rules.

OKLAHOMA SERVICE LAW — QUICK REFERENCE

12 O.S. § 2005(A) — Documents Requiring Service

Every pleading subsequent to the original petition, every written motion other than one which may be heard ex parte, every written notice, appearance, demand, offer of judgment, and similar paper must be served upon each of the parties.

Service upon a represented party is made upon the attorney of record unless the court orders service upon the party.

12 O.S. § 2005(B) — Permitted Methods of Service

Service of papers (other than original process) may be made by:

1. Delivery — Handing a copy to the attorney or party; leaving a copy at the attorney's office with a clerk or other responsible person; or leaving at the attorney's or party's residence with a person of suitable age and discretion
2. Mail — Mailing to the last known address
3. Facsimile — Transmitting via fax if authorized and the recipient has a fax number on file
4. Electronic Means — Transmitting by email or other electronic means with the written consent of the recipient (§ 2005(B)(3))
5. OSCN E-Filing System — Electronic filing through the Oklahoma State Courts Network, which auto-serves registered participants

12 O.S. § 2006(E) — Mail Extension (3 Days)

Whenever a party must act within a prescribed period after service, and service is by mail, 3 days are added to the prescribed period. Oklahoma follows the same 3-day mail extension rule as federal practice.

Oklahoma E-Filing — OSCN (Oklahoma State Courts Network)

Oklahoma courts use the OSCN (Oklahoma State Courts Network) portal for e-filing and electronic service:

• E-filing is available through the OSCN online docketing system
• When a document is e-filed, registered attorneys of record receive electronic notification of filing
• The OSCN e-filing system's notification of filing serves as service on registered participants
• Parties not registered in OSCN must be served by traditional means (mail, hand delivery, fax) with that service separately noted in the Certificate of Service
• The Oklahoma Supreme Court has authorized mandatory e-filing in various courts and case types; check the applicable district court's administrative orders

Electronic / Email Service — § 2005(B)(3)

Service by electronic means (including email) requires the written consent of the party or their attorney. Written consent documentation must be maintained in the attorney's file. Without consent, email service is not valid.

Service on Self-Represented (Pro Se) Parties

Self-represented litigants must be served by mail or personal delivery unless they have separately consented in writing to electronic service or are registered in the OSCN e-filing system. Confirm pro se registration status with the court clerk before relying on OSCN notification as service.

District Court Variations

Oklahoma has 77 counties organized into 26 judicial districts. Each district court may have local administrative orders affecting e-filing and service requirements. Always check the applicable district court's standing orders posted on the OSCN website.

COURT CAPTION

IN THE DISTRICT COURT OF [________________________________] COUNTY
STATE OF OKLAHOMA

[________________________________],
Plaintiff(s),

vs. Case No.: [____________________]

[________________________________],
Defendant(s). Judge: [____________________]

Division: [____________________]

CERTIFICATE OF SERVICE

The undersigned hereby certifies that on [__/__/____], a true and correct copy of the following document(s):

Title of Document(s) Served:

1. [________________________________]

2. [________________________________]

3. [________________________________]

(collectively, "the Document(s)") was served upon the following parties and/or their attorneys of record in the manner indicated below.

PARTIES AND COUNSEL SERVED

Recipient No. 1

Full Name: [________________________________]
Role/Capacity: [________________________________] (e.g., Attorney for Defendant; Self-Represented Plaintiff)
Firm Name: [________________________________]
Mailing Address: [________________________________]
City, State, ZIP: [________________________________]
Email Address: [________________________________]
Facsimile Number: [________________________________]
Oklahoma Bar Association No. (if attorney): [____________________]

Method of Service — check all that apply:

☐ U.S. Mail — First Class, Postage Prepaid
Deposited in the United States Mail, postage prepaid, on [__/__/____], at [________________________________], Oklahoma.
(Response deadline extended by 3 days per 12 O.S. § 2006(E).)

☐ U.S. Mail — Certified Mail, Return Receipt Requested
USPS Tracking / Certified Article No.: [____________________]
Date mailed: [__/__/____]

☐ Personal / Hand Delivery
Delivered in person at the address shown above on [__/__/____] at [____] ☐ a.m. ☐ p.m.
Person accepting delivery (if not recipient): [________________________________]

☐ Delivery at Office — Left with Clerk or Responsible Person
Left at the attorney's/party's office with: [________________________________]
Date/Time: [__/__/____] at [____] ☐ a.m. ☐ p.m.

☐ Facsimile Transmission
Transmitted by fax to: [____________________] on [__/__/____] at [____] ☐ a.m. ☐ p.m.
Number of pages transmitted (including cover): [____]
Confirmation of successful transmission: ☐ Yes ☐ Attached

☐ Electronic Mail (Email) — Written Consent on File per 12 O.S. § 2005(B)(3)
Transmitted to: [________________________________]
Date/Time transmitted: [__/__/____] at [____] ☐ a.m. ☐ p.m.
Written consent to email service obtained on: [__/__/____]
Bounce-back / undeliverable notice received: ☐ No ☐ Yes (describe): [________________________________]

☐ OSCN E-Filing System — Electronic Notification of Filing
Document electronically filed with the District Court of [________________________________] County via OSCN.
Date and time of filing: [__/__/____] at [____] ☐ a.m. ☐ p.m.
OSCN Filing / Reference No.: [____________________]
Recipient is a registered OSCN e-filer: ☐ Yes ☐ Unknown — also served by additional method above

☐ Overnight Courier / Commercial Carrier
Carrier name: [________________________________]
Tracking number: [____________________]
Date tendered to carrier: [__/__/____]

☐ Other Method (describe): [________________________________]

Recipient No. 2

Full Name: [________________________________]
Role/Capacity: [________________________________]
Firm Name: [________________________________]
Mailing Address: [________________________________]
City, State, ZIP: [________________________________]
Email Address: [________________________________]
Facsimile Number: [________________________________]
Oklahoma Bar Association No. (if attorney): [____________________]

Method of Service — check all that apply:

☐ U.S. Mail — First Class, Postage Prepaid
Deposited in the United States Mail, postage prepaid, on [__/__/____], at [________________________________], Oklahoma.
(Response deadline extended by 3 days per 12 O.S. § 2006(E).)

☐ U.S. Mail — Certified Mail, Return Receipt Requested
Tracking No.: [____________________] | Date mailed: [__/__/____]

☐ Personal / Hand Delivery
Date/Time: [__/__/____] at [____] ☐ a.m. ☐ p.m.

☐ Left at Office with: [________________________________] on [__/__/____]

☐ Facsimile to [____________________] on [__/__/____] | Pages: [____] | Confirmed: ☐ Yes ☐ Attached

☐ Email (Written Consent on File — § 2005(B)(3))
Sent to: [________________________________] on [__/__/____] at [____] ☐ a.m. ☐ p.m.
Consent obtained: [__/__/____]

☐ OSCN E-Filing
Date/Time: [__/__/____] at [____] ☐ a.m. ☐ p.m. | Filing No.: [____________________]
Registered in OSCN: ☐ Yes ☐ Unknown — served by additional method above

☐ Overnight Courier — Carrier: [________________] | Tracking: [____________________] | Date: [__/__/____]

☐ Other: [________________________________]

Recipient No. 3 (duplicate as needed for additional parties)

Full Name: [________________________________]
Role/Capacity: [________________________________]
Firm Name: [________________________________]
Mailing Address: [________________________________]
City, State, ZIP: [________________________________]
Email Address: [________________________________]
Facsimile Number: [____________________]

Method of Service — check all that apply:

☐ U.S. Mail — First Class | Date: [__/__/____] | Location: [________________________________], OK
(3-day extension per § 2006(E))

☐ Certified Mail | Tracking No.: [____________________] | Date: [__/__/____]

☐ Personal / Hand Delivery | Date/Time: [__/__/____] at [____] ☐ a.m. ☐ p.m.

☐ Left at Office with: [________________________________]

☐ Fax to [____________________] | Date: [__/__/____] | Pages: [____] | Confirmed: ☐ Yes

☐ Email (Consent on File) | Sent to: [________________________________] | Date: [__/__/____]

☐ OSCN E-Filing | Date: [__/__/____] | Filing No.: [____________________] | Registered: ☐ Yes ☐ Unknown

☐ Overnight Courier | Carrier: [____________] | Tracking: [____________________] | Date: [__/__/____]

☐ Other: [________________________________]

CERTIFICATION AND SIGNATURE

I, the undersigned, certify under penalty of perjury under the laws of the State of Oklahoma that the foregoing Certificate of Service is true and correct, and that service was completed as described above on [__/__/____].

Signature: ___________________________________________
Printed Name: [________________________________]
Oklahoma Bar Association No.: [____________________]
Firm / Organization: [________________________________]
Address: [________________________________]
City, State, ZIP: [________________________________]
Telephone: ([____]) [____]-[________]
Email: [________________________________]
Representing: ☐ Plaintiff ☐ Defendant ☐ Third-Party ☐ Intervenor ☐ Self-Represented
Party Represented: [________________________________]

SUPPLEMENTAL PROOF OF SERVICE BY MAIL

(Complete this section when service is by U.S. Mail)

DECLARATION OF MAILING

I, [________________________________], declare as follows:

1. I am over 18 years of age. I am ☐ the attorney of record ☐ an employee of the law firm ☐ a person not a party to this action.
2. My address is: [________________________________], [________________________________], Oklahoma [____________________].
3. On [__/__/____], I deposited in the United States Mail at [________________________________], Oklahoma, a true and correct copy of the Document(s) identified above, enclosed in a sealed envelope with first-class postage fully prepaid, addressed as follows:

Recipient: [________________________________]
Address: [________________________________]
City, State, ZIP: [________________________________]

Recipient: [________________________________]
Address: [________________________________]
City, State, ZIP: [________________________________]

4. Service method:
   ☐ Regular first-class mail. Per 12 O.S. § 2006(E), the responding party's deadline is extended by 3 calendar days.
   ☐ Certified mail, return receipt requested. Certified article number(s): [____________________]

I declare under penalty of perjury under the laws of the State of Oklahoma that the foregoing is true and correct.

Executed on: [__/__/____]

Signature: ___________________________________________
Printed Name: [________________________________]
Address: [________________________________]

SUPPLEMENTAL PROOF OF ELECTRONIC SERVICE

(Complete this section when service is by OSCN e-filing, email, or fax)

DECLARATION OF ELECTRONIC SERVICE

I, [________________________________], declare as follows:

1. I am over 18 years of age and authorized to make service in this action.
2. On [__/__/____], I served the Document(s) identified above by the following electronic method(s):

☐ OSCN E-Filing System:
I electronically filed the Document(s) with the District Court of [________________________________] County, State of Oklahoma, through the Oklahoma State Courts Network (OSCN) e-filing portal at approximately [____] ☐ a.m. ☐ p.m. on [__/__/____]. The OSCN system electronically notified all registered users. OSCN filing number/timestamp: [____________________]. Any party not registered in OSCN was served by traditional means as stated above.

☐ Electronic Mail (Email):
I transmitted the Document(s) by email to each person identified above, at the email address(es) listed. Written consent to email service pursuant to 12 O.S. § 2005(B)(3) was obtained from each recipient on or before [__/__/____] and is maintained in my files. I did not receive any undeliverable or bounce-back notification.

☐ Facsimile:
I transmitted the Document(s) via facsimile to each person identified above at the fax number(s) listed. The fax machine confirmed successful transmission. A transmission confirmation sheet is ☐ attached ☐ on file.

I declare under penalty of perjury under the laws of the State of Oklahoma that the foregoing is true and correct.

Executed on: [__/__/____]

Signature: ___________________________________________
Printed Name: [________________________________]
Address: [________________________________]

OKLAHOMA PRACTITIONER NOTES

Response Deadline Calculation — 12 O.S. § 2006(E)

OSCN E-Filing Portal

Oklahoma's OSCN portal (oscn.net) provides public access to court records and supports electronic filing for attorneys registered with the system. Many district courts require mandatory e-filing for attorneys. Key practices:

• Register at oscn.net to obtain e-filing credentials
• Verify whether mandatory e-filing applies to your case type and court
• Keep OSCN filing receipts and electronic service logs for your records
• Check the district's administrative orders posted on the OSCN website

Certificate of Service on Discovery

Oklahoma follows the practice of serving discovery requests and responses on all parties. A certificate of service is required for all served discovery documents. Discovery is generally not filed with the clerk unless attached to a motion or ordered by the court.

Confidential Personal Information — Oklahoma Supreme Court Rule 31

Before serving documents electronically or filing publicly, redact personal identifiers (Social Security numbers, financial account numbers, dates of birth of minors, home addresses) consistent with Oklahoma Supreme Court rules and local administrative orders.

Domestic Violence / Protective Order Cases

In cases involving protective orders or domestic violence, special service rules and confidentiality protections apply. Consult the applicable provisions of 22 O.S. § 60.2 et seq. and the court's standing orders.

Attorney Withdrawal and Substitution

When an attorney has withdrawn or new counsel has entered an appearance, verify the current attorney of record before completing service. Serving a former attorney does not constitute valid service.

SOURCES AND REFERENCES

• Oklahoma Statutes Title 12 (2025), Justia: https://law.justia.com/codes/oklahoma/title-12/
• 12 O.S. § 2005 — Service and Filing: https://law.justia.com/codes/oklahoma/title-12/section-12-2005/
• Oklahoma State Courts Network (OSCN) — E-Filing Portal: https://www.oscn.net/
• Oklahoma Legislature — Title 12 full text: https://www.oklegislature.gov/OK_Statutes/CompleteTitles/os12.pdf
• Oklahoma Bar Association — Practice Resources: https://www.okbar.org/