Procedurally, you contest the claims by filing an answer to the complaint. You then need to file a motion to affirm the validity of the prenup. If it was made in accordance with New Jersey law, there was full disclosure of all finances, and it's not unfair, the court will enforce it. Note that under the statute you've got to file a motion to determine this before trial.
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You need to file an answer and deny the allegations. If you have a pre-nup and your spouse is trying to annul the marriage, you really need an attorney.
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You need to contest the action and do so within the 35 days for responding to a complaint. Your response must include a request to enforce the prenuptial agreement along with a copy of it being attached.
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