GE Energy Power Conversion France SAS v. Outokumpu Stainless USA, LLC

This case asked whether a company that did not sign an international arbitration agreement could still force arbitration under equitable estoppel (a contract rule that can prevent unfair inconsistency). The Supreme Court said the New York Convention does not block that result, so nonsignatories may use those domestic rules when they fit.

The decision affects companies involved in cross-border contracts and supply chains. For example, a manufacturer or service provider that did not sign the main contract may still try to send a dispute to arbitration if state contract law allows it.

The Supreme Court has finished this case. The lower courts can now consider whether ordinary state-law rules actually let the nonsignatory compel arbitration here.

The dispute was whether a company that did not sign an arbitration agreement could still force arbitration. The Court said the New York Convention does not automatically forbid that.

Businesses in international deals are most affected, especially firms working through contractors, subcontractors, or related companies. Some nonsignatories may now argue for arbitration under state contract rules.

The Supreme Court's review is over. The lower courts can now decide whether equitable estoppel or another state-law rule applies in this specific dispute.