In Illinois, paternity is presumed if a couple is married, and they have a child during the marriage. Furthermore, if the mother was married or in a civil union for up to 300 days before the birth of a child, paternity is also presumed. If a couple who is not married has a child, specific steps can be taken to prove paternity for legal reasons.
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April 23, 2026
Under family law, common law marriage started in the late 1800s, and while it has mostly fallen out of use, some states still recognize its existence. People can often confuse cohabitation with common law marriage, although the two are very different. The state of Illinois does not allow common law marriage, but the Illinois courts will recognize it in certain circumstances
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April 23, 2026
This article will give a brief overview of Illinois Family Law as there have been no significant updates to the law for 2025. We've seen some changes in the past few years and this article will identify the most up to date information with previous family law updates.
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July 22, 2025
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