Not everyone can initiate a will dispute. A person intending to bring an action for a will dispute must meet the requirement of standing.
A person is considered to have standing where he or she has an interest in the estate of the deceased. A person who may satisfy the requirement of standing might include a person who was entitled to share in the estate under the valid will preceding the disputed will.
However, even where a person may be unable to dispute a will due to their lack of standing, they may be able to contest a will. [...]