Two years ago, the U.S. Supreme Court issued its seminal
personal jurisdiction ruling in Bristol-Myers Squibb Co. v.
Superior Court of California.1 BMS held that state
courts cannot exercise personal jurisdiction over out-of-state
defendants as to plaintiffs whose claims arose out of state.
The ruling made clear that this fundamental rule applies even
when, as was the case in BMS, the state court is presiding over
nationwide mass tort actions involving substantially similar claims
by in-state plaintiffs against the same out-of-state defendants.
Although the decision has reined in plaintiffs lawyers'
forum-shopping efforts to manufacture personal jurisdiction by
joining the claims of resident plaintiffs with those of
nonresidents in state court in mass tort proceedings, its
applicability to class actions — which sometimes also seek to
group the claims of in- and out-of-state plaintiffs against
out-of-state defendants — was left an open
question.2