Whether California courts could exercise specific personal jurisdiction over the nonresident plaintiffs' Plavix claims.
Holding
No. The Fourteenth Amendment barred California from exercising specific jurisdiction because the nonresidents' claims lacked a sufficient connection to California.
Reasoning
The Court distinguished general jurisdiction from specific jurisdiction. General jurisdiction permits a court to hear any claim against a corporation only where it is essentially “at home,” ordinarily its State of incorporation or principal place of business. Specific jurisdiction, by contrast, is claim-specific: the suit must arise out of or relate to the defendant's contacts with the forum State.
Due process requires an affiliation between the forum and the underlying controversy, usually an in-state activity or occurrence connected to the particular claim. A defendant's extensive but unrelated contacts with a State cannot substitute for that claim-specific link. This limitation protects defendants from a State's coercive authority and also reflects the territorial limits that federalism places on state-court power.
California's sliding-scale theory improperly relaxed the required connection merely because BMS had wide-ranging California operations. In the Court's view, that approach was a “loose and spurious” form of general jurisdiction: it would allow unrelated in-state activity to support litigation over claims that did not arise from that activity.
The nonresident plaintiffs had no relevant California connection. They did not obtain Plavix, ingest it, suffer injury, or receive treatment in California. BMS's California research was unrelated to Plavix, and the fact that California residents asserted similar claims did not create a forum connection for the nonresidents' separate claims. The necessary link must run between the forum and each claim at issue, not between the forum and other plaintiffs with similar claims.