DNA test says child isn't his. Court says: still legitimate.

The DNA report said 0% chance he was the father. The law said: doesn't matter. A husband who had already filed for divorce, armed with a private lab report that excluded him as the biological father of his second son, walked into the Family Court in Pune asking for one thing: a court-ordered DNA test to prove his wife's adultery. The court agreed. The Bombay High Court agreed. Then the Supreme Court stopped everything.

The question was deceptively simple. Could a man use a DNA test — the gold standard of modern forensic evidence — to prove that a child born during his marriage was not his? And if he could, what would that do to the child?

When the marriage turned

The couple married in 2005. They had two sons. By 2016, something had cracked. The husband said he discovered intimate messages between his wife and another man in September of that year. He filed for divorce in June 2017, alleging adultery under Section 13(1)(i) of the Hindu Marriage Act, 1955 (the legal ground that allows a spouse to seek divorce on proof of a voluntary sexual relationship outside marriage).

But the husband wanted more than a divorce. He wanted proof. He obtained a private DNA test that showed a 0% probability of him being the biological father of the second child. Then he applied to the Family Court for a court-directed DNA test of the minor boy — not just to confirm the private report, but to use the result as evidence of adultery in the divorce proceedings.

The Family Court allowed the application. The Bombay High Court dismissed the wife's challenge. Both courts reasoned that if the DNA test showed the husband was not the biological father, it would be strong circumstantial evidence that the wife had been unfaithful. The husband's access to the child during conception was not seriously disputed. But the courts held that DNA evidence could override the legal presumption of legitimacy.

The wall that Section 112 builds

The wife appealed to the Supreme Court. Her argument rested on a single, formidable provision: Section 112 of the Indian Evidence Act, 1872. This section creates what the law calls a "conclusive presumption" — a fact that the court must treat as true and cannot allow evidence to contradict. Section 112 says that a child born during the continuance of a valid marriage, or within 280 days after its dissolution if the mother remained unmarried, is conclusively presumed to be the child of the husband.

The word "conclusive" is the entire point. Under Section 4 of the Evidence Act, when one fact is declared to be "conclusive proof" of another, the court cannot allow evidence to be given that disputes it. The only exception built into Section 112 itself: the husband can rebut the presumption if he proves that he and his wife had "no access" to each other at the time when the child could have been conceived.

"Access" here does not mean sexual intercourse. It means the husband and wife were living under the same roof, or were in the same place, or had the opportunity to be together during the period of conception. If they did, the presumption is irrebuttable — no amount of evidence, not even a DNA test, can break it.

Why the DNA test could not do what the husband wanted

The Supreme Court bench — Justice V. Ramasubramanian and Justice B.V. Nagarathna — examined the husband's argument carefully. He said the DNA test would not prove the child was illegitimate. It would only prove adultery. The child would still be the legitimate son of the husband under Section 112. The DNA result, he argued, would simply be evidence of the wife's infidelity — a ground for divorce under Section 13(1)(i) of the Hindu Marriage Act.

The court rejected this logic. The bench held that even if a genuine DNA test revealed the child was not biologically born to the husband, the conclusive presumption of legitimacy under Section 112 remains irrebuttable where the husband and wife had access to each other during the time of conception. What the DNA test would prove, the court said, is adultery — not illegitimacy. But the problem was that the DNA test could not be used to prove adultery without first destroying the presumption of legitimacy. The two were inseparable in this context.

The court clarified the only path to rebut the presumption: the husband must prove non-access — meaning the couple was physically separated during the period of conception. Evidence of the wife's infidelity, by itself, is not enough. If the husband had access, adultery does not justify a finding of illegitimacy. The conclusive presumption under Section 112 can only be rebutted by proving non-access, not by DNA evidence showing lack of biological paternity.

The child's rights enter the room

The court also considered the child's rights under Article 21 of the Constitution (the right to life and personal liberty, which includes the right to identity and dignity). A court-directed DNA test, the bench observed, would brand the child as illegitimate in the eyes of the law and society. The child had no say in the divorce proceedings. The child was not a party. Yet the outcome of the DNA test would determine his legal status — who his father was, what surname he carried, what inheritance rights he had.

The court distinguished earlier precedents. In Goutam Kundu v. State of West Bengal (1993), the Supreme Court had held that no one can be compelled to give a blood sample for a DNA test, and that the court should not direct a DNA test unless there is strong prima facie evidence that the husband had no access. In Sharda v. Dharmpal (2003), the court allowed medical examinations in matrimonial cases but drew a line at DNA tests of children. In Dipanwita Roy v. Ronobroto Roy (2015), the court permitted a DNA test where the husband had already proved non-access through other evidence — the wife had admitted living separately during the relevant period.

This case was different. The husband had not pleaded non-access. He had not even alleged that he was away from his wife during the period of conception. His entire case rested on the DNA report and the intimate messages. The court held that without a foundation of non-access, the DNA test could not be directed.

The adverse inference that could not be drawn

The husband also argued that if the wife refused the DNA test, the court should draw an "adverse inference" against her under Illustration (h) to Section 114 of the Evidence Act (a rule that allows the court to presume that evidence which a party refuses to produce would have been unfavourable to them). The Supreme Court rejected this argument as well.

The power to draw an adverse inference under Section 114, Illustration (h), is discretionary, not mandatory. The court must exercise this discretion having regard to the facts of each case. Where the law creates a conclusive presumption in favour of legitimacy, and where the party seeking the DNA test has not laid the foundation of non-access, the court cannot use the threat of an adverse inference to compel the wife and child to submit to a test. To do so would be to allow the procedural rule to defeat the substantive protection that Section 112 creates.

What this means for every family court in India

The Supreme Court's judgment in Aparna Ajinkya Firodia v. Ajinkya Arun Firodia (2023) draws a clear line. A DNA test is not a magic wand that a husband can wave to break the presumption of legitimacy. The presumption is conclusive — not rebuttable — unless the husband first proves non-access. Without that foundation, no court can direct a DNA test of a child born during a valid marriage, no matter how strong the suspicion of adultery.

For practitioners, the takeaway is precise. If you represent a husband seeking to challenge paternity, your first job is not to file for a DNA test. Your first job is to gather evidence of physical separation during the period of conception — proof that you and your wife were not in the same city, the same house, the same bed. Without that, Section 112 is a wall that no laboratory report can breach.

THE PLAY: Before asking a court to direct a DNA test of a child born during marriage, first plead and prove non-access between the spouses during the period of conception — without it, Section 112's conclusive presumption cannot be touched.

The child remained legitimate. The DNA report stayed in the husband's drawer.