Section 5700.314 Of Chapter 3. Civil Provisions Of General Application From California Family Law Code >> Division 9. >> Part 6. >> Chapter 3.

. (a) Participation by a petitioner in a proceeding under this part 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 this part.
  (c) The immunity granted by this section does not extend to civil litigation based on acts unrelated to a proceeding under this part committed by a party while physically present in this state to participate in the proceeding.