Hall v. Kalfayan. California Court of Appeal. Key passages:
"In this case, we conclude that a prospective beneficiary of a will cannot maintain a cause of action for legal malpractice against the attorney who drafted the will but did not have it executed before the death of the testator."
"The essence of the claim in the case before this court is that Kalfayan failed to complete the new estate plan for Ms. Turner and have it executed on her behalf by her conservator before her death, thereby depriving Hall of his share of her estate. In the absence of an executed (and in this instance, approved) testamentary document naming Hall as a beneficiary, Hall is only a potential beneficiary. Kalfayan's duty was to the conservatorship on behalf of Ms. Turner; he did not owe Hall a duty of care with respect to the preparation of an estate plan for Ms. Turner."
"This conclusion is particularly appropriate in this case, where Ms. Turner herself had not expressed a desire to have a new will prepared and had only limited conversation with Kalfayan about the disposition of her estate. In addition, there is no certainty that the court would have approved the petition for substituted judgment. We also observe that extending Kalfayan's duty to potential beneficiaries of Ms. Turner's estate would expose him to liability to her niece, whose share of the estate would have been reduced. This is precisely the type of unreasonable burden on an attorney that militates against expanding duty to potential beneficiaries."
"As a matter of law, Hall cannot establish duty, a necessary element for his claim for professional negligence. The trial court properly granted summary judgment on this basis."