Illinois Adoption Notice is a legal document that is issued by the Illinois Department of Public Health to inform the biological birth parents of the adoption of their child. The notice provides an opportunity for the biological parents to consent to the adoption or to contest it. There are two types of Illinois Adoption Notice: the Original Adoption Notice and the Substituted Adoption Notice. The Original Adoption Notice is issued to the biological parents when the adoption is first filed in court. The Substituted Adoption Notice is sent to the biological parents when the court grants the adoption. The notice must be properly served in accordance with Illinois law in order to be effective.