Okla. Stat. tit. 71, § 71-1-611: Service of process

A. A consent to service of process required by this act must be

signed and filed in the form required by a rule adopted or order

issued under this act. A consent appointing the Administrator the

person's agent for service of process in a noncriminal action or

proceeding against the person or the person's successor or personal

representative under this act or a rule adopted or order issued

under this act after the consent is filed, has the same force and

validity as if the service were made personally on the person filing

the consent. A person that has filed a consent complying with this

subsection in connection with a previous application for

registration or notice filing need not file an additional consent.

B. If a person, including a nonresident of this state, engages

in an act, practice, or course of business prohibited or made

actionable by this act or a rule adopted or order issued under this

act and the person has not filed a consent to service of process

under subsection A of this section, the act, practice, or course of

business constitutes the appointment of the Administrator as the

person's agent for service of process in a noncriminal action or

proceeding against the person or the person's successor or personal

representative and has the same force and validity as if the service

were made personally on the person.

C. Service under subsection A or B of this section may be made

by providing a copy of the process to the office of the

Administrator, but it is not effective unless:

1. The plaintiff, which may be the Administrator, promptly

sends notice of the service and a copy of the process, return

receipt requested, to the defendant or respondent at the address set

forth in the consent to service of process or, if a consent to

service of process has not been filed, at the last known address, or

takes other reasonable steps to give notice; and

2. The plaintiff files an affidavit of compliance with this

subsection in the action or proceeding on or before the return day

of the process, if any, or within the time that the court, or the

Administrator in a proceeding before the Administrator, allows.

D. Service pursuant to subsection C of this section may be used

in a proceeding before the Administrator or by the Administrator in

a civil action in which the Administrator is the moving party.

Service by mail shall be effective on the date of receipt by the

defendant or respondent or if refused, on the date of refusal by the

defendant or respondent. Acceptance or refusal of service by mail

by a person who is fifteen (15) years of age or older shall

constitute acceptance or refusal by the party addressed. Acceptance

or refusal by any officer or by any employee of the registered

office or principal place of business who is authorized to or who

regularly receives certified mail shall constitute acceptance or

refusal by the party addressed. A return receipt signed at such

registered office or principal place of business shall be presumed

to have been signed by an employee authorized to receive certified

mail. Refusal by any person to accept delivery of the certified

mail provided for in this section, or the refusal to sign the return

receipt, or the lack of knowledge of the Administrator of any

address to which process may have been mailed shall not in any

manner affect the legality of the service, and the person shall be

presumed to have had knowledge of the contents of the process.

E. If process is served under subsection C of this section, the

court, or the Administrator in a proceeding before the

Administrator, shall order continuances as are necessary or

appropriate to afford the defendant or respondent reasonable

opportunity to defend.