There are many reasons why a person might wish to challenge a will. In the majority of cases, the person contesting a will is likely to benefit financially if the will is invalidated. California law permits contestants to challenge wills on several grounds, including lack of capacity, undue influence, revocation, fraud, duress and mistake.
Financial elder abuse can be prevented by a carefully-crafted estate plan, provided the documents are in place while an individual is relatively young and healthy. Wills drafted in advanced age can invite legal contests among heirs and beneficiaries.