Terms of Use
Any will can be challenged for any reason. However, very few wills are challenged in court. When this occurs, it's usually challenged by a close relative who feels somehow cheated out of his or her rightful share of the deceased person's property.
Generally speaking, only spouses are legally entitled to a share of your property. Your children are not entitled to anything unless you created the will before the birth of the child and it appears that you unintentionally failed to add them to your will.
To get an entire will invalidated, someone must go to court and prove that it suffers from a fatal flaw. Fatal flaws include situations where your signature was forged, you weren't of sound mind when you made the will or you were unduly influenced by someone.