Okla. Stat. tit. 43, § 43-601-314
Limited immunity of petitioner
A. Participation by a petitioner in a proceeding under the
Uniform Interstate Family Support Act before a responding tribunal,
whether in person, by private attorney, or through services provided
by the support enforcement agency, does not confer personal
jurisdiction over the petitioner in another proceeding.
B. A petitioner is not amenable to service of civil process
while physically present in this state to participate in a
proceeding under the Uniform Interstate Family Support Act.
C. The immunity granted by this section does not extend to
civil litigation based on acts unrelated to a proceeding under the
Uniform Interstate Family Support Act committed by a party while
physically present in this state to participate in the proceeding.