Master Supreme Court decision establishing that personal jurisdiction requires the defendant’s purposeful availment of the forum state, not the unilateral actions of others. with this comprehensive case brief.
Hanson v. Denckla is a cornerstone of personal jurisdiction doctrine, crystallizing the "purposeful availment" requirement that limits a state court’s power over out-of-state defendants. Building on International Shoe Co. v. Washington and distinguishing McGee v. International Life Insurance Co., the Court made clear that a forum’s interest and the plaintiff’s convenience cannot substitute for a defendant’s own, deliberate contacts with the forum state.
In the trust-and-estates setting of Hanson, the Court held that Florida courts lacked personal jurisdiction over a Delaware trustee when the trustee had not purposefully directed activities at Florida. The settlor’s unilateral move to Florida and the trustee’s incidental communications into the state were not enough. Hanson thus stands as a doctrinal pivot: it sets a high bar for asserting specific jurisdiction based on out-of-state conduct, emphasizing that due process protects defendants from being haled into distant forums absent their own, forum-directed conduct.
Hanson v. Denckla, 357 U.S. 235 (U.S. 1958)
In 1935, while domiciled outside Florida, Mrs. Donner created an inter vivos trust with Wilmington Trust Company, a Delaware corporation with its principal place of business in Delaware. The trust was governed by Delaware law, administered in Delaware, and the trustee had no offices, agents, solicitation, or property in Florida. The trust instrument reserved to Mrs. Donner a power of appointment over the remainder. After establishing the trust, Mrs. Donner later moved to Florida (in the 1940s) and, while domiciled there in 1949, she executed an exercise of the reserved power of appointment at a Florida bank, changing the disposition of the trust’s remainder beneficiaries. Wilmington Trust continued to administer the trust from Delaware and communicated with Mrs. Donner by mail, sending statements and income distributions to Florida; it did not otherwise do business there. After Mrs. Donner died in Florida in 1952, competing groups of beneficiaries litigated the validity of the 1949 power of appointment. A Florida court purported to exercise jurisdiction over Wilmington Trust and certain nonresident beneficiaries through notice by mail and publication; it ultimately held the 1949 exercise invalid under Florida law. Parallel proceedings in Delaware addressed the same issues. On appeal, the core question became whether Florida courts had personal jurisdiction over the nonresident Delaware trustee and absent appointees/beneficiaries consistent with the Fourteenth Amendment’s Due Process Clause, and if not, whether the Florida decree could bind the trustee or command full faith and credit elsewhere.
Whether Florida courts could assert personal jurisdiction over a nonresident Delaware trustee in a trust dispute, where the trustee had not purposefully directed activities at Florida and the settlor’s unilateral move to Florida created the only meaningful connection to the forum.
Due process permits a state court to exercise personal jurisdiction over a nonresident defendant only where the defendant has minimum contacts with the forum such that the maintenance of the suit does not offend traditional notions of fair play and substantial justice. It is essential that there be some act by which the defendant purposefully avails itself of the privilege of conducting activities within the forum state, thus invoking the benefits and protections of its laws; the unilateral activity of those who claim some relationship with a nonresident cannot satisfy the requirement of contact with the forum state.
No. Florida lacked personal jurisdiction over the Delaware trustee because the trustee did not purposefully avail itself of conducting activities within Florida; the settlor’s unilateral move to Florida and the trustee’s incidental, derivative contacts were insufficient. Consequently, the Florida decree could not bind the trustee or command full faith and credit in other states.
The Court emphasized that the Delaware trustee’s relevant conduct occurred in Delaware: the trust was created there, governed by Delaware law, and administered from Delaware. The trustee maintained no offices or agents in Florida, solicited no business there, and held no property there. Its only Florida contacts were incidental communications and remittances to the settlor after she relocated—contacts that arose solely because the settlor chose to move to Florida. Such unilateral actions by the plaintiff or a third party cannot create the defendant’s minimum contacts with the forum. Distinguishing McGee v. International Life Insurance Co., where the defendant insurer had solicited and maintained a contract in the forum, the Court found no deliberate forum-directed conduct by the trustee here. The trustee did not seek the benefits and protections of Florida’s laws; nor did it create a substantial connection with Florida related to the cause of action. The trust res and core administration remained in Delaware, and the dispute concerned the validity of an exercise of a power of appointment—an issue intertwined with the trust’s Delaware-centered administration. Florida’s interest in adjudicating a dispute affecting a Florida decedent’s estate, while real, could not overcome the constitutional requirement that jurisdiction be grounded in the defendant’s purposeful forum contacts. Finally, the Court rejected the notion that jurisdiction could be sustained as in rem or quasi in rem based on intangible trust property because the res was centered in Delaware, not Florida, and the asserted jurisdiction over nonresident parties rested on mail and publication rather than constitutionally sufficient contacts. Having found no personal jurisdiction, the Court held that Florida’s decree had no binding effect on the trustee or absent beneficiaries, defeating any claim that other states were constitutionally obligated to give it full faith and credit.
Hanson firmly installs "purposeful availment" as a constitutional prerequisite for specific personal jurisdiction. It limits a forum’s reach by clarifying that a plaintiff’s or third party’s unilateral actions—such as moving to the forum—cannot manufacture the defendant’s minimum contacts. Hanson also shows how International Shoe’s flexibility has limits: fairness and forum interest cannot substitute for a defendant’s own forum-directed conduct. For law students, the case provides a critical contrast with McGee and a foundation for later cases like World-Wide Volkswagen, Burger King, and Walden, all of which continue to refine specific jurisdiction and purposeful availment.
It means the defendant must have deliberately engaged in conduct connecting it to the forum, thereby invoking the benefits and protections of the forum’s laws. In Hanson, the Delaware trustee neither solicited nor conducted business in Florida; the only connection was the settlor’s unilateral move. Because those contacts were not created by the trustee’s own actions, Florida could not exercise jurisdiction.
In McGee, the insurer solicited a policy in the forum and maintained an ongoing contractual relationship there, reflecting purposeful availment. In Hanson, the trustee did not solicit or form a Florida-based relationship; any communications into Florida were incidental to a trust formed and administered in Delaware. Thus, unlike McGee, there was no affirmative, forum-directed conduct by the defendant.
Not by itself. Incidental mailings or payments that arise because a customer or settlor moved to the forum are derivative of another’s unilateral actions. Without additional, deliberate forum-directed conduct by the defendant (e.g., solicitation, negotiation, performance centered in the forum), such contacts are insufficient under Hanson.
A significant one. The trust was created under Delaware law and administered in Delaware by a Delaware trustee, so the relevant res and the defendant’s conduct were centered there. Florida could not treat intangible trust interests as located in Florida for jurisdictional purposes when the trustee’s administration and legal obligations were anchored in Delaware.
The Florida decree invalidating the power of appointment was not binding on the Delaware trustee or absent nonresident beneficiaries, and other states (including Delaware) were not required to give the Florida judgment full faith and credit. The dispute properly proceeded in Delaware, where the trustee was subject to jurisdiction.
Hanson underscores that the plaintiff’s forum residence, foreseeability of harm, or forum interest cannot replace the defendant’s purposeful availment. Modern cases still ask whether the defendant targeted the forum through its own conduct, whether the claims arise out of or relate to those contacts, and whether exercising jurisdiction is consistent with fair play and substantial justice.
Hanson v. Denckla draws a bright doctrinal line: specific jurisdiction hinges on the defendant’s own, deliberate connection to the forum. By rejecting jurisdiction based on the settlor’s unilateral move and incidental communications, the Court reaffirmed that due process protects defendants from being compelled to litigate in a forum they did not choose to enter.
For students and practitioners, Hanson is indispensable when analyzing purposeful availment. It cautions against conflating forum interest and fairness with constitutionally required contacts, and it situates trust-and-estates disputes within the broader architecture of personal jurisdiction developed in International Shoe and refined in later cases.