Cross-border enforcement

Enforcing a Luxembourg judgment in United States

No treaty puts a Luxembourg judgment into force in the United States. The United States signed the 2019 Hague Judgments Convention but never ratified it, so that convention does not run between Luxembourg and the US. A money judgment has to go through the law of the state where the debtor or the assets sit. An arbitral award from Luxembourg has a separate and materially more reliable route through the New York Convention.

Applicable regime

The United States signed the 2019 Hague Judgments Convention on 02.03.2022 and has not ratified it; the convention does not apply between Luxembourg and the US [N170]. On the Luxembourg side the convention is in force through EU accession, effective 01.09.2023 [N156], but that has no bearing here because both states must be bound. There is no other bilateral or multilateral treaty covering civil judgment recognition between the two countries.

A Luxembourg court judgment therefore reaches a US debtor through the recognition law of the individual state where enforcement is sought, whether by statute or by a common-law action on the judgment. Whether a given state has adopted a statutory route is a fact that has to be checked for that state; {lists}. See the jurisdiction overview for the US and the outbound view from Luxembourg as the state of origin.

An arbitral award made in Luxembourg follows a different track entirely: the New York Convention 1958 governs, regardless of which US state the assets are in [N016].

What the destination court will check

These conditions apply cumulatively. Missing one is enough to stop recognition.

• The Luxembourg judgment is final and conclusive, not interlocutory or subject to ordinary appeal.
• The Luxembourg court had jurisdiction recognized under the destination state's own rules on foreign jurisdiction, not merely under Luxembourg law.
• The defendant received proper notice and a genuine opportunity to be heard.
• The judgment was not procured by fraud.
• Recognition does not conflict with the public policy of the destination state.
• The judgment orders payment of a sum certain, not equitable relief that a US court would have to reshape.

Which body applies these conditions, and how it applies them, depends on the state and on the classification of the refusal under non-enforcement (O8); the office within that role is not fixed in advance here, {authority}.

What will not go through

Tax, customs and other revenue claims are routinely excluded from foreign judgment recognition in US courts, independent of any treaty. Penal judgments face the same wall. A default judgment is vulnerable if the Luxembourg court's jurisdiction over the defendant is disputable under US standards, not just under Luxembourg procedure. Punitive or exemplary damages can trigger a public policy objection even where the underlying liability is accepted. A judgment still open to appeal in Luxembourg will not be treated as final. Whether a statutory recognition route exists at all in the relevant state is itself a threshold question, not a formality; {lists}.

Documents

Both Luxembourg and the United States are parties to the Hague Apostille Convention, in force for the US since 15-X-1981 [N413]. An apostille on the Luxembourg judgment and supporting court documents replaces consular legalisation. An English translation of the judgment and the underlying record will be required for filing; the destination court sets the certification standard for that translation.

Timing

Filing fees for recognition actions in US courts are fixed amounts, not a percentage of the claim [N557]. That is true regardless of judgment size.

For an arbitral award, the limitation period is three years from the date the award was made [N527]. Courts split on what happens once that period has run: the Second Circuit's Seetransport line allows recognition of a foreign judgment that itself confirmed the award, while the D.C. Circuit's Commissions Import Export decision holds that federal arbitration law does not override state law on recognizing the underlying foreign judgment [N533].

For a court judgment, the period varies by state. New York applies whichever is shorter: the judgment's remaining life in Luxembourg, or twenty years [N528]. Delaware applies fifteen years where no period is fixed at origin [N530]. California applies whichever is shorter: the Luxembourg period, or ten years, and California has not adopted the Uniform Foreign-Country Money Judgments Recognition Act, unlike most other states [N531] [N532]. See the limitation periods reference for how the running date is fixed elsewhere.

If the primary route is closed

An arbitration clause written into the underlying contract before a dispute arises changes the calculus for any future claim: the New York Convention route is structurally more reliable than judgment recognition under state law [N016] [N172]. For a dispute that has already produced a Luxembourg judgment rather than an award, one option is recognition in a third state bound by the Hague 2019 Convention where the debtor holds assets, then enforcement there under that state's domestic rules. Whether that path is worth pursuing depends entirely on where the debtor's assets actually are, not on where the judgment was issued. The reverse direction, enforcing a US judgment in Luxembourg, follows different rules entirely; see enforcing a US judgment in Luxembourg, and the general service description at cross-border recognition and enforcement.

What to do before filing

Locating the debtor's assets in the United States, and confirming they are still there, comes before any filing decision. State recognition proceedings take time, and a debtor aware of a Luxembourg judgment has that time to move accounts and property between states or offshore. Whether a freezing or attachment measure is available before judgment on the recognition claim depends on the specific state and the specific facts; {interim}. Filing also carries its own exposure: a state court asked to recognize a foreign judgment can examine the original proceeding's fairness, and a weak record on notice or jurisdiction can produce a refusal that is hard to reverse. Background on how a written demand interacts with a judgment that remains unpaid is set out in this note, and the broader routing options are listed on the enforcement to the US hub. This firm does not work on a result-only fee, and its registration can be checked in the public register linked in the footer.