ILCS » Chapter 750 · Act 36
Illinois Compiled Statutes

750 ILCS 36/203 (2026)

Jurisdiction To Modify Determination

✓ current as of May 2026
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(750 ILCS 36/203)
    Sec. 203. Jurisdiction To Modify Determination. Except as otherwise provided in Section 204, a court of this State may not modify a child-custody determination made by a court of another state unless a court of this State has jurisdiction to make an initial determination under Section 201(a)(1) or (2) and:
        (1) the court of the other state determines it no
    
longer has exclusive, continuing jurisdiction under Section 202 or that a court of this State would be a more convenient forum under Section 207; or
        (2) a court of this State or a court of the other
    
state determines that the child, the child's parents, and any person acting as a parent do not presently reside in the other state.
(Source: P.A. 93-108, eff. 1-1-04.)

    
Notes of Decisions
Cited in 7 cases (4 in the last 5 years), 2015–2023 · leading case: Gorup v. Brady, 2015 IL App (5th) 150078 (Ill. App. Ct. 2015).
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Gorup v. Brady, 2015 IL App (5th) 150078 (Ill. App. Ct. 2015). “" 750 ILCS 36/203 (West 2014). Based on a plain reading of the statute, the UCCJEA requires a finding that the initial state has either ceded jurisdiction or that no party presently resides in that state (thus ending exclusive, continuing jurisdiction), and a finding that…”
Hernandez Camberos v. Palacios, 2021 IL App (2d) 210078 (Ill. App. Ct. 2021). “” 750 ILCS 36/203 (West 2018). ¶ 19 Here, for the first years of A.”
Gorup v. Brady, 2015 IL App (5th) 150078 (Ill. App. Ct. 2016). “” 750 ILCS 36/203 (West 2014). Based on a plain reading of the statute, the UCCJEA requires a finding that the initial state has either ceded jurisdiction or that no party presently resides in that state (thus ending exclusive, continuing jurisdiction), and a finding that…”
In re Est. of Mirabella S., 2018 IL App (3d) 180414 (Ill. App. Ct. 2018). “750 ILCS 36/203 (West 2016). Once a state makes an initial child custody determination, it retains exclusive continuing jurisdiction.”
In re Marriage of Soman, 2021 IL App (1st) 200513-U (Ill. App. Ct. 2021). “Pamela’s motion asserted Andrew’s petitions were filed to forum shop and evade the Ohio courts and argued: (1) the Ohio court had exclusive jurisdiction pursuant to sections 203 and 206 of the UCCJEA (750 ILCS 36/203, 206 (West 2010)); (2) Andrew incorrectly relied on section…”
In re Marriage of Soman, 2023 IL App (1st) 220548-U (Ill. App. Ct. 2023). “Pamela’s motion claimed that Andrew’s petitions were filed to forum- shop and evade the Ohio court and argued (1) that the Ohio court had exclusive jurisdiction pursuant to sections 203 and 206 of the Uniform Child-Custody Jurisdiction and Enforcement Act (UCCJEA) (750 ILCS…”
In re Marriage of Spirer, 2021 IL App (2d) 200560-U (Ill. App. Ct. 2021). “750 ILCS 36/203 (West 2018) (Illinois court may not modify another state’s child-custody determination unless it has jurisdiction to make initial determination under section 201(a)(1) and (2) and Illinois court determines that the child and his or her parents do not presently…”
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