Prenuptial agreements have a reputation, that's for sure. One of the myths about these contracts is that they are impregnable once signed. It is as if once you signed the contract, everything is etched in stone no matter how unfair or ill-advised the contract is. But, in fact, this is just a myth. There is no truth to the idea that prenuptial agreement are immune to legal challenges.
So how, then, could a spouse challenge the validity of their prenuptial agreement? There are many circumstances that can lead to such a challenge, and the first one we'll talk about is the overall "fairness" of the contract. There has to be "conscionability" when it comes to a prenuptial agreement. The contract can't be too unbalanced and favor one spouse too much. If it does, a judge could rule that the contract is "unconscionable," meaning that part of or all of the prenup could be struck down.