To convict someone of criminal sexual assault in Illinois, prosecutors have to prove specific things beyond a reasonable doubt. That is a high bar, and meeting it requires real evidence. However, keep in mind that a charge is not a conviction. Understanding how prosecutors build these cases is an important first step in fighting back. If you are facing a criminal sexual assault charge in 2026, an Oakbrook Terrace, IL criminal defense lawyer can help you understand what the state has to prove and where the case can be challenged.
What Is Criminal Sexual Assault Under Illinois Law?
Criminal sexual assault is defined under 720 ILCS 5/11-1.20. Under this statute, a person commits criminal sexual assault when they commit an act of sexual penetration and one of the following is true: