Irrevocable trusts are known for having strict rules. If you decide to include one in your estate plan, you cannot touch the assets in it or make changes to it unless you have an agreement from the person named in the trust. Even then, it is not always easy to do much with an irrevocable trust once you create it. This may leave you wondering if after you die someone could contest it.
It seems logical that if the rules for creating and managing an irrevocable trust are so strict that the rules for contesting it would be as well. This is kind of true. According to Zacks, contesting an irrevocable trust is just like contesting a will. So, there are strict guidelines for the process, but they are not unique to this type of trust.
The court has to be sure that it is doing the right thing be revoking your wishes. Because you are not there to state what you want to happen, the court has to demand clear and convincing evidence that the trust is not valid.
This requires a person to go to court and prove there is something that legally makes this trust invalid. That could be claiming that you were not mentally competent to create it or that there is some problem or error with the trust.
Do note that it is possible for someone to file a challenge to a trust before you die. This would be ideal since you could argue your own case for the validity. However, contesting is only an option after your death.