Short answer
The words “EEA,” “Europe” or “cross-border” do not determine the procedural regime. Each EU civil-justice instrument has its own territorial, personal, subject-matter and temporal scope.
Denmark has a Treaty opt-out, but parallel agreements make Brussels I bis and the current EU Service Regulation operate between Denmark and the other Member States. That does not make Denmark a participant in every family-law, applicable-law, evidence or insolvency regulation.
EEA membership does not generally extend EU civil-justice legislation. The 2007 Lugano Convention supplies rules resembling the older Brussels I regime between the EU, Denmark, Iceland, Norway and Switzerland. Liechtenstein is an EEA state but is not a Lugano party. Service, evidence, family and succession questions need separate conventions or national law.
The United Kingdom is now a third country. The Withdrawal Agreement preserves EU rules for defined pre-2021 proceedings, events and requests. For newer cases, the Hague 2005 Choice of Court Convention, the Hague 2019 Judgments Convention—effective between the UK and EU Member States other than Denmark for qualifying proceedings begun from 1 July 2025—and other Hague treaties may apply. Otherwise, the forum state's national private-international-law rules govern.
Even where a third country is involved, an EU regulation can still bind a Member State court: for example, Brussels I bis normally governs a defendant domiciled in a Member State, and Rome I and Rome II can designate any country's law.
Ask four scope questions for each issue
A dispute may use different instruments for jurisdiction, applicable law, service, evidence and recognition. For each issue ask:
- What subject is involved—commercial contract, tort, insolvency, maintenance, divorce, succession or something else?
- Which states participate in that particular instrument?
- What connecting fact triggers it—defendant's domicile, habitual residence, chosen court, place of proceedings or location of a judgment?
- On what date were proceedings begun, the agreement made, the harmful event committed, the request received or the judgment given?
One case may use Lugano for jurisdiction, Rome I for applicable law, a Hague convention for service and Lugano again for recognition.
EEA membership does not import the civil-justice acquis
The EEA extends much internal-market law to Iceland, Norway and Liechtenstein, but EU judicial-cooperation regulations under Title V TFEU are not generally EEA legislation. The practical bridge for ordinary civil and commercial jurisdiction is the 2007 Lugano Convention.
Lugano binds the EU, Denmark, Iceland, Norway and Switzerland. It covers jurisdiction and recognition and enforcement of judgments in civil and commercial matters, subject to exclusions including status and capacity, matrimonial property, succession, insolvency, social security and arbitration.
Persons domiciled in a Lugano-bound State “shall ... be sued in the courts of that State”. —
Its structure resembles Regulation 44/2001, not every feature of Brussels I bis. Enforcement still requires a declaration of enforceability, and the Convention's own lis pendens and court-agreement rules control.
Liechtenstein is not a Lugano party. EEA membership alone does not provide the Convention route for a Liechtenstein defendant or judgment. National jurisdiction and recognition law, bilateral arrangements and relevant Hague conventions must be checked.
Lugano does not govern service or evidence. Relevant Hague participation, reservations and authorities must be checked state by state. In a Member State court, Rome I and Rome II remain universal and may select non-EU law.
Denmark: opt-out plus instrument-specific agreements
Protocol No 22 means Denmark does not automatically take part in EU measures under the civil-justice title. The correct answer is nevertheless not simply “EU rules do not apply.”
The 2005 EU–Denmark jurisdiction agreement imports and updates the Brussels regime for civil and commercial matters. Denmark implemented the Brussels I bis recast through that mechanism. As a result, Regulation 1215/2012 operates in relations between Denmark and the other Member States as an international-law obligation under the agreement.
Denmark also has a parallel agreement on service of documents. It notified the Commission that it would implement Regulation 2020/1784, so the current Service Regulation applies between Denmark and the other Member States. The agreement and notification are the legal bridge even though the Regulation's recital says Denmark did not participate in its adoption.
Those agreements create no general bridge. Denmark does not thereby participate in Brussels IIb, the EU Taking Evidence Regulation, the Succession Regulation, Rome III or the matrimonial-property regulations. Hague and Nordic conventions, specific agreements and Danish law must be checked. Denmark participates in Lugano in its own right.
The United Kingdom: separate old and new cases
The UK left the EU on 31 January 2020 and the transition period ended on 31 December 2020. Article 67 of the Withdrawal Agreement preserves specified EU civil-justice rules, including:
- Brussels I bis jurisdiction for legal proceedings instituted before the transition ended, and recognition and enforcement for judgments given in those proceedings;
- Brussels IIa rules for proceedings instituted before the end date;
- the Insolvency Regulation for main proceedings opened before that date; and
- specified service and evidence cooperation where the relevant request or document was received before the end of the transition period.
Article 66 separately preserves Rome I for contracts concluded before the end of transition and Rome II for events giving rise to damage occurring before it. The exact transition trigger differs by instrument, so “the dispute began before Brexit” is not a legal test.
“Regulation (EU) No 1215/2012 shall apply to the recognition and enforcement of judgments given in legal proceedings instituted before the end of the transition period”. —
In BNP Paribas, C-567/21, the Court confirmed that Article 67(2)(a) preserves the Brussels recognition and enforcement rules for judgments given in proceedings instituted before 31 December 2020, even where recognition is sought later.
For newer civil and commercial cases, Brussels I bis does not generally govern UK courts and the UK is not a Lugano party. Member State courts may still apply Brussels I bis where its own connecting rules require it—for example, against an EU-domiciled defendant or under exclusive jurisdiction—and use national rules where Article 6 directs them to do so for a third-country defendant.
In Owusu, C-281/02, the Court held under the predecessor Brussels Convention that a court could not decline mandatory domicile-based jurisdiction in favour of a non-contracting state merely because that forum appeared more appropriate. Third-country facts do not by themselves switch off a binding European jurisdiction rule.
Hague conventions now carry more of the UK relationship
The Hague 2005 Choice of Court Convention generally supports exclusive court agreements in civil or commercial matters and recognition of resulting judgments between its parties, subject to scope limits and declarations. It does not cover non-exclusive or merely asymmetric wording in the same way as a Brussels I bis clause, and consumer, employment, family, insolvency and many other matters are excluded.
The Hague 2019 Judgments Convention entered into force for the UK on 1 July 2025. It creates a recognition and enforcement route between the UK and EU Member States bound through the EU for qualifying judgments from proceedings instituted when the Convention had effect between the states concerned—practically, proceedings begun on or after 1 July 2025. Denmark is not bound through the EU and had not separately joined by the review date.
Hague 2019 is not Brussels I bis. It does not allocate jurisdiction at filing and has substantial exclusions, including family matters, insolvency, privacy, intellectual property and most competition matters. Its eligibility bases and refusal grounds must be checked before assuming a judgment circulates.
Older or excluded UK judgments may depend on national recognition law, bilateral treaties where preserved, or another specialist convention. Service and evidence normally require the relevant Hague Service or Evidence Convention, domestic court rules and the requested state's declarations.
Other non-EU countries
For an ordinary third country, start with the Member State court's EU rules. Brussels I bis Article 6 generally sends jurisdiction over a non-EU-domiciled defendant to national law, but preserves protected-party forums, exclusive jurisdiction and Member-State court agreements.
Applicable law is broader. Rome I and Rome II apply universally, so the chosen or objectively connected law can be that of any country. Succession and family instruments also contain their own universal-law and third-state rules. Participation is different from the law designated.
Recognition of a third-country judgment normally follows national law unless Lugano, a Hague convention or another treaty governs. Service and evidence likewise require the applicable treaty or domestic procedure.
EU rules preserved by the Withdrawal Agreement turn on the specified procedural or factual date—not simply on when judgment is eventually delivered. See .
Build an instrument matrix before filing
Record the domiciles, habitual residences, chosen court and law, claim type, dates, service destination, evidence location and judgment state. Identify one authority for each procedural step.
Verify party status and declarations on the official treaty depositary when filing. Conventions enter into force on different dates and territorial units may be treated separately. For EU measures, check participation provisions rather than inferring coverage from geography.
Conclusion
EU civil justice beyond the EU is a network, not a single perimeter. Lugano connects many commercial cases; tailored agreements connect Denmark; the Withdrawal Agreement protects defined legacy UK matters; and Hague conventions govern newer UK and global cases. Test each procedural step, participating state and transition date separately.
Sources
This article provides general legal information, not advice for a specific matter. Laws, facts and procedural deadlines may change the result. Follow the linked primary sources and obtain local advice before acting.