How do you determine if a will is invalid?

Answer:
A will is legally bound if; The person in question is of sound mind when the will is drawn and signed, If the person in question has signed a waiver being of sound mind to allow another person to act on his or her behalf or if a court has made a judgment stating as much.

These are the only normal determinations for a valid will.

There are other circumstances where a will is challenged, however, this requires a strong legal case to have any of the above norms challenged.
First answer by Uncle Nate. Last edit by Uncle Nate. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].