Illinois Grandparents' Rights: The Harm Standard Under §602.9

A fit parent's decision about a child's relationships is protected under Illinois law, and a court is not free to override it simply because a grandparent believes visitation would be good for the child. Illinois builds that protection directly into its statute with an explicit harm requirement and a rebuttable presumption favoring the parent, one of the more detailed, modern grandparent-visitation designs among the states covered by this cluster.

This page explains Illinois's five standing triggers, the harm-and-presumption standard the grandparent must overcome, the separate custody track, and the two overlapping rules that govern what happens after an adoption.

Statute text verified live against the official Illinois Compiled Statutes on 2026-08-11: 750 ILCS 5/602.9, 750 ILCS 5/601.2, and 755 ILCS 5/11-7.1. This article has not yet been reviewed by a licensed attorney.

The Fit-Parent Presumption Comes First

Troxel v. Granville, 530 U.S. 57 (2000), requires courts to give a fit parent's decision at least some special weight. Illinois goes further than the federal floor requires by writing an explicit harm requirement into the statute itself, alongside a stated rebuttable presumption. A grandparent cannot simply argue that visitation would benefit the child; they must show that denying it has actually caused, or would cause, real harm.

Standing: Illinois's Five Triggers

Section 602.9 reaches only a minor child who is one year old or older, so a grandparent of an infant has no petition under this Section at all. Above that age threshold, 750 ILCS 5/602.9(c)(1) permits a petition only where one of the following applies:

• The child's other parent is deceased or has been missing for at least 90 days, with the disappearance reported to a law enforcement agency;
• A parent of the child is incompetent as a matter of law;
• A parent has been incarcerated in jail or prison for a period in excess of 90 days immediately prior to the filing of the petition, so a past jail term that has already ended does not qualify;
• The child's parents have been granted a dissolution of marriage, or have been legally separated from each other, or a dissolution or other parental-responsibilities proceeding is pending, and at least one parent does not object to the visitation. A completed divorce with no open case satisfies this trigger, and non-objection is a materially lower bar than affirmative consent; or
• The child was born to parents who are not married to each other, the parents are not living together, and the parent-child relationship has been legally established. For a grandparent or great-grandparent, that relationship must be established with respect to the parent who is related to the petitioner.

Two further limits sit on top of the list. Section 602.9(c)(4) bars a petition by the parents or grandparents of a parent where parentage between the child and that related parent has not been legally established, so a paternal grandparent whose son never established parentage has no standing even though the mother's relationship is established. Section 602.9(b)(2) puts some children outside the Section entirely no matter which trigger fits: a child with a pending petition under Section 2-13 of the Juvenile Court Act, a child with a pending adoption petition by an unrelated person, a child voluntarily surrendered by a parent other than to the Department of Children and Family Services or a foster care facility, a child previously adopted by people unrelated to the biological parents, and a child relinquished under the Abandoned Newborn Infant Protection Act.

These triggers are specific and granular compared to many states' shorter lists, and a petition filed outside one of them does not have standing.

The Standard: Undue Harm, Not Best Interest Alone

Once standing is established, the grandparent must show that there has been an unreasonable denial of visitation by a parent, and that the denial has caused the child undue mental, physical, or emotional harm. This works against a rebuttable presumption that a fit parent's actions and decisions regarding grandparent visitation are not harmful to the child's mental, physical, or emotional health. The petitioner carries the burden of rebutting that presumption. This is a genuine harm standard, not a bare best-interest balancing test, and it is one of the more clearly Troxel-compliant designs among the states in this cluster.

An Older Statute, Now Replaced

Illinois's current design is a legislative replacement for an earlier, more permissive statute that the Illinois Supreme Court struck down. In Wickham v. Byrne, 199 Ill. 2d 309, 769 N.E.2d 1 (Ill. 2002), the court held the predecessor provisions facially unconstitutional, reasoning that they permitted visitation on a bare best-interest finding, which in every case placed the parent on equal footing with the party seeking visitation and directly contravened the traditional presumption that fit parents act in the best interests of their children, the same flaw the U.S. Supreme Court identified in Troxel. That history strengthens, rather than undercuts, the current statute: the harm requirement and rebuttable presumption described above are the legislature's direct answer to Wickham. What matters for a reader today is the current statute, amended most recently effective January 1, 2019, which is the law now in force.

Custody: Two Routes Under Section 601.2

750 ILCS 5/601.2 is Illinois's general jurisdiction and commencement provision for the allocation of parental responsibilities, not a death-only statute, and it opens two different routes a grandparent may use.

The broader route is Section 601.2(b)(3): a person other than a parent may file a petition for allocation of parental responsibilities in the county where the child is permanently resident or found, but only if the child is not in the physical custody of one of his or her parents. That non-custody threshold is the principal grandparent-custody route in Illinois, and it does not depend on any parent having died.

The narrower route is Section 601.2(b)(5), which applies when one of the parents is deceased and the petitioner is a grandparent who is a parent or step-parent of the deceased parent. It is gated on fact-specific circumstances that existed at the time of the parent's death: the surviving parent had been absent from the marital abode for more than one month without the spouse knowing his or her whereabouts, or the surviving parent was in State or federal custody, or the surviving parent had received supervision for or been convicted of certain criminal offenses, or of violating an order of protection entered for the protection of the deceased parent or the child. This route was effective January 1, 2016.

What Happens to Visitation After an Adoption

Illinois has two overlapping rules on this question, both confirmed against current statute text. Under the general Marriage Act framework, visitation rights granted before an adoption petition is filed terminate automatically by operation of law upon the entry of an order terminating parental rights or granting the adoption of the child, whichever is earlier. That termination is unconditional and has no relative exception. Where the people who adopted the child are related to the child as defined by Section 1 of the Adoption Act, a person who was the child's grandparent, great-grandparent, or sibling before the adoption keeps standing to bring a new action under Section 602.9, but the earlier order is gone and the new petition must again prove unreasonable denial and undue harm. Under a separate provision of the Probate Act, applying to the specific scenario where both of the child's parents have died, visitation is denied following an adoption unless the adoption is by a close relative, defined to include but not be limited to a grandparent, aunt, uncle, first cousin, or adult brother or sister, and even then only where the petitioner shows they were unreasonably denied visitation. That same Probate Act provision requires courts to revoke visitation for anyone convicted of first-degree murder of the child's parent, grandparent, great-grandparent, or sibling, unless visitation is shown to serve the child's best interest. In both regimes, an adoption by someone outside the family ends the grandparent's route altogether. In neither regime does a relative adoption carry an existing order forward: it preserves only the ability to petition again and to prove the case afresh.

How to File: Procedure and Venue

Illinois Circuit Courts, the state's single-tier general-jurisdiction trial courts, hear petitions under 750 ILCS 5, including Section 602.9. None of the five standing triggers requires an already-pending case. Section 602.9(b)(1) lets a petitioner either file within a pending dissolution or parental-responsibilities proceeding or bring an independent action in the county where the child resides, and the divorce-or-separation trigger is satisfied by a completed dissolution or legal separation just as much as by a pending proceeding. Illinois does not publish a single statewide fee schedule for this filing; confirm the current cost with the circuit clerk's office in the county where you plan to file.

Mediation and Informal Resolution First

Because Illinois requires actual proof of harm, a case that is not well-supported by evidence is unlikely to succeed regardless of how sympathetic the underlying family situation is. Mediation, family counseling, or a direct conversation with the parent is worth exploring before committing to litigation, both because it may resolve the situation without a court order and because a strong, well-documented case is more likely to succeed if litigation does become necessary.

The Litigation Reality in Illinois

A contested case under Section 602.9 requires assembling real evidence of harm, not just a general belief that visitation would help the child, and that evidentiary burden can make the process lengthy and expensive. Because the opposing party is typically the child's own parent, the dispute carries a real risk of lasting family damage regardless of outcome. If, after exploring mediation, an Illinois grandparent decides their situation genuinely fits one of the statute's standing triggers and they can show real harm, a family-law attorney licensed in Illinois can evaluate the specific facts and explain what the case would realistically involve.

Related Resources

For the separate custody track, see can grandparents get custody. For a national overview of grandparent visitation, see grandparent visitation rights and the grandparents' rights by state hub. For related Illinois family-law topics, see Illinois child custody laws and Illinois divorce laws.

Disclaimer

This article provides general information about Illinois grandparents' rights law. It is not legal advice and does not create an attorney-client relationship. Verify current details with the circuit clerk's office or a licensed Illinois family-law attorney before acting on anything here.

---

Last updated: 2026-08-12.

Frequently Asked Questions

Does Illinois require proof of harm for grandparent visitation?

Yes. 750 ILCS 5/602.9 requires proof that an unreasonable denial of visitation has caused the child undue mental, physical, or emotional harm, overcoming a rebuttable presumption that a fit parent's decisions are not harmful to the child.

Can any Illinois grandparent file for visitation?

No. The child must be at least one year old, and standing then requires one of five specific triggers: the other parent deceased or missing at least 90 days, a parent legally incompetent, a parent incarcerated in excess of 90 days immediately before filing, parents who have been granted a dissolution or legal separation or who have a proceeding pending where at least one parent does not object, or unmarried non-cohabiting parents with parentage legally established as to the parent related to the petitioner. Section 602.9(b)(2) also places some children outside the Section entirely, including a child with a pending adoption petition by an unrelated person.

Did a court strike down Illinois's earlier grandparent visitation law?

Yes. In Wickham v. Byrne, 199 Ill. 2d 309 (2002), the Illinois Supreme Court held the predecessor statute facially unconstitutional because it placed a parent on equal footing with the grandparent seeking visitation, contravening the presumption that a fit parent acts in the child's best interest. The legislature enacted the current, harm-based statute afterward, and that law governs today.

Does adoption end an existing Illinois grandparent visitation order?

Yes, in every case. Under 750 ILCS 5/602.9(b)(6) an existing order terminates automatically by operation of law upon an order terminating parental rights or granting the adoption, whichever is earlier, and there is no relative exception to that termination. Where the adopting person is a relative, a former grandparent, great-grandparent, or sibling keeps standing to file a new petition, but must prove unreasonable denial and undue harm again from scratch. A separate Probate Act rule governs cases where both parents have died.

Is there a separate Illinois track if both parents have died?

Yes. Illinois's Probate Act provides a distinct visitation route for that specific situation, with its own close-relative adoption exception and a mandatory revocation rule for anyone convicted of first-degree murder of certain family members.