Gross v. Gross

Ohio Supreme Court established the three-part test that still controls Ohio prenup enforcement: voluntary execution, full disclosure or knowledge, and not unconscionable at execution or enforcement.

Why this case matters

Gross remains the controlling Ohio authority over 40 years later. The two-look test is one of the strictest substantive-fairness frameworks among US states — comparable only to Massachusetts (DeMatteo). If you signed a long-ago Ohio prenup and circumstances have changed dramatically, the second-look rule is what gives you a real argument for renegotiation today.

The facts

The Grosses signed a prenup before their marriage that contained substantial waivers. At divorce, the wife challenged the agreement, arguing she had not freely entered it and that enforcement after years of marriage and the husband's greatly increased wealth would be unconscionable. The case worked its way to the Ohio Supreme Court at a time when Ohio prenup law was scattered and uncertain.

The holding

The Ohio Supreme Court adopted a three-part test for prenup enforceability: (1) entered into freely without fraud, duress, coercion, or overreaching; (2) supported by full disclosure or full knowledge of the nature, value, and extent of the parties' property; and (3) not unconscionable at the time of execution OR at the time of enforcement. The "two-look" element — review at enforcement, not just at signing — distinguished Ohio from many other states.

What it means for you

• Ohio applies a three-part test that all three prongs must satisfy.
• The "two-look" rule means a prenup that was fair when signed can still be set aside if enforcement years later would be unconscionable.
• Long marriages with dramatically changed circumstances are particularly vulnerable to the second-look review.
• Full disclosure is required, but "full knowledge" can substitute — if you knew what your spouse had, you can't later claim ignorance.

Primary source

The full opinion is available at: https://www.quimbee.com/cases/gross-v-gross

Ohio prenup law in context

Ohio prenups are governed by Ohio Rev. Code §3103.06; enforceability per Gross v. Gross — official statute text. For the full cost breakdown, attorney rate ranges, and procedural requirements, see the Ohio prenup cost guide.

To check whether your specific situation has the kind of risks Gross v. Gross identifies, take the 60-second prenup quiz — it applies Ohio-specific rules to your answers.

A note on legal citation

This page summarizes a published court opinion for educational purposes. We aim for accuracy but recommend reading the primary source linked above for the controlling text. Court opinions can be modified, distinguished, or overruled by later decisions; for current law, consult a family law attorney licensed in Ohio.