As can be imagined for the enemy siblings, Jack challenged the validity of the testamentary inheritance, arguing, among other things, that the transfer was contrary to the provisions of the shareholders` agreement and the patent letter and was therefore void. A provision of a valid and binding shareholders` agreement involving the deceased always prevails over an adversarial provision in the deceased`s will, since the agreement binds the deceased`s personal representatives after the death of the deceased. Estate planning for business owners and contractors can often fall on the “to do” priority list when building and securing the business takes all their time in decay.