(750 ILCS 36/109)
Appearance And Limited Immunity.
(a) A party to a child-custody proceeding, including a modification
proceeding, or a petitioner or respondent in a proceeding to enforce or
child-custody determination, is not subject to personal jurisdiction in this
another proceeding or purpose solely by reason of having participated, or of
been physically present for the purpose of participating, in the proceeding.
(b) A person who is subject to personal jurisdiction in this State on a
other than physical presence is not immune from service of process in this
party present in this State who is subject to the jurisdiction of another state
immune from service of process allowable under the laws of that state.
(c) The immunity granted by subsection (a) does not extend to civil
litigation based on acts unrelated to the participation in a proceeding under
committed by an individual while present in this State.
(Source: P.A. 93-108, eff. 1-1-04.)