The Court held that Pennsylvania's registration statute, which requires non-Pennsylvania companies registering to do business within the state to accept general personal jurisdiction in Pennsylvania courts, does not violate the Due Process Clause of the Fourteenth Amendment.

Although Mallory does not have transnational facts, it may have major implications for personal jurisdiction in transnational cases. The Court's 2014 decision in Daimler A.G. v. Bauman largely eliminated general jurisdiction over foreign corporations in U.S. courts. Corporate registration statutes, however, may provide plaintiffs with an alternative basis for jurisdiction.