A European technology company had secured a civil judgment against a Japanese distributor in a European court. The judgment was final, the debt was substantial, and the debtor's primary assets sat in Japan. On paper, the path forward seemed clear. In practice, Japan's recognition conditions introduced a set of procedural and doctrinal hurdles that no European court order alone could resolve.
Enforcing a foreign judgment in Japan requires satisfying a four-part statutory test under Japanese civil procedure rules: proper jurisdiction, service of process, reciprocity between the originating state and Japan, and compliance with Japanese public policy. Where any condition is disputed, Japanese courts conduct independent review. The process typically unfolds over several months before a first-instance decision is issued.
This case study outlines how the matter was structured, what complications arose, and what lessons apply to similar cross-border enforcement efforts in Japan.
Client profile and the enforcement challenge
The client was a mid-sized European technology group with a long-standing distribution agreement in Japan. The relationship had broken down over alleged non-payment and misappropriation of licensed assets. Litigation had concluded in Europe, producing a money judgment and an order addressing intellectual property misuse.
The immediate challenge was threefold. First, the European judgment had been obtained in a jurisdiction that had no bilateral enforcement treaty with Japan. Second, the manner in which the Japanese defendant had been served during the original proceedings was contested. Third, the defendant argued that certain remedies in the judgment touched on areas where Japanese public policy diverged from the originating court's approach.
Japan is not a party to any multilateral convention on the mutual recognition of civil judgments. a point that frequently surprises clients accustomed to enforcement within the EU or under the New York Convention framework for arbitral awards. This absence of a treaty layer means that each enforcement attempt is assessed case by case under domestic civil procedure rules. The distinction between hanketsu no shounin (recognition of a foreign judgment under Japanese law) and award enforcement under the New York Convention is critical: the Convention's streamlined route was unavailable here because the dispute had been resolved through court litigation. Not through an arbitral tribunal.
For clients considering how to structure future disputes involving Japanese counterparties, our analysis of litigation and arbitration strategy in Japan sets out the strategic trade-offs in detail.
Legal strategy and rationale
The team assessed three options at the outset. The first was to file directly for recognition and enforcement before a Japanese district court, relying on the existing European judgment. The second was to re-litigate the underlying merits in Japan, treating the European judgment as persuasive evidence rather than a binding instrument. The third was to pursue asset freezing measures in parallel with recognition proceedings, to prevent dissipation during the months of procedural review.
Re-litigation was ruled out quickly. It would have reset the clock entirely and forfeited the evidentiary advantage of a final European judgment. The cost and time involved made it commercially unattractive.
Direct recognition proceedings were selected as the primary route, combined with an application for provisional attachment of identified assets. The provisional attachment route under Japanese civil procedure rules operates independently of the recognition proceedings. It requires showing a prima facie basis for the claim and the risk of asset dissipation – both of which were demonstrable on the facts.
On the reciprocity condition, the team documented the legal position in the originating European jurisdiction, establishing that Japanese judgments would receive recognition there under equivalent conditions. This analysis was prepared as a formal legal opinion submitted to the Japanese court. Reciprocity is a live issue in Japanese enforcement proceedings. Courts in Japan have declined recognition where the reciprocity condition could not be established with sufficient specificity.
The service of process issue required careful handling. The original European proceedings had served the Japanese defendant through the Hague Service Convention channel. The team prepared detailed evidence showing that service had been effected in accordance with both the Convention and Japanese domestic standards. This documentation became one of the most contested elements of the proceeding.
Where disputes touch on both enforcement and underlying corporate conduct, coordinating with specialists in corporate disputes in Japan is often necessary to manage parallel procedural tracks effectively.
Key milestones and complications encountered
The provisional attachment application was filed within the first three weeks of engagement. The Japanese court granted it within approximately six weeks, freezing a defined category of the debtor's receivables. This early step was critical. It neutralised the debtor's ability to transfer value offshore during the main proceedings.
The recognition proceeding itself moved through three distinct phases. In the first phase, the court examined the four statutory conditions. The jurisdiction and service questions consumed the majority of hearing time. The defendant's challenge to service rested on a procedural argument about the timing of notification under the Hague Service Convention. The team successfully rebutted this by producing contemporaneous records of the service process and correspondence from the receiving Japanese authority.
The public policy condition produced the most substantive legal debate. The European judgment contained a provision on pre-judgment interest calculated at a rate that the defendant argued was punitive by Japanese standards. Japanese civil procedure rules permit courts to refuse recognition – in whole or in part – where enforcement would violate koujyo ryouzoku (public policy and good morals). The team's position was that interest calculation methodology, even if different from Japanese domestic norms, does not reach the threshold required to engage the public policy exception. Courts in Japan have consistently applied this exception narrowly. The court accepted the argument, though it took additional written submissions to resolve the point.
A further complication arose midway through the proceedings. The debtor initiated insolvency proceedings in Japan. This triggered a statutory stay on the recognition proceeding and required the team to file a proof of claim in the insolvency. The two tracks – recognition and insolvency – then ran in parallel, each informing the other. The provisional attachment, crucially, had already been secured before the insolvency filing and its priority position was preserved under Japanese insolvency legislation.
Practitioners working on enforcement matters in other Asian jurisdictions may find it useful to compare approaches. A parallel analysis of enforcement strategy is available in our case study on foreign judgment enforcement in the UAE.
To explore how this type of multi-track enforcement strategy could apply to your situation in Japan, contact us at info@ferrazwhitmore.com.
Transferable lessons for cross-border enforcement in Japan
Lesson one: Arbitration clauses remove the treaty gap. Japan is a party to the New York Convention. An award from an arbitral tribunal seated in a Convention state is enforceable in Japan through a more predictable route than a foreign court judgment. The reciprocity requirement, which is the most fact-intensive condition in the court judgment track, does not apply to award enforcement under the Convention. For clients structuring future contracts with Japanese counterparties, choosing an appropriate seat of arbitration – and drafting the clause to reference ICC Rules or UNCITRAL procedures – is a material risk-management decision. The litigation route remains available, but the arbitration route under the New York Convention offers greater procedural certainty at the enforcement stage.
Lesson two: Provisional measures should be pursued before recognition proceedings are filed. The statutory stay triggered by an insolvency filing can neutralise enforcement efforts that have not yet crystallised into secured positions. Japanese civil procedure rules allow provisional attachment to be obtained on a prima facie showing. Acting on this before the debtor becomes aware of the enforcement strategy is often the difference between a recoverable and an unrecoverable claim.
Lesson three: Service of process documentation must be prepared to Japanese evidentiary standards. A challenge to the validity of service in the originating proceedings is one of the most commonly raised defences in Japanese recognition cases. Collecting and preserving the full service chain – from the initial request to the foreign central authority through to the Japanese receiving authority's confirmation – should begin before the recognition application is filed. Reconstructing this documentation after the fact is possible but costly and time-consuming.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our team combines Portuguese civil law expertise with English common law tradition to deliver cross-border legal solutions in foreign judgment enforcement, international arbitration, and complex commercial disputes. Our litigation and arbitration practice covers proceedings before courts and arbitral bodies across Asia-Pacific, the Middle East, and Europe – including matters governed by ICC Rules and UNCITRAL procedures. The firm's Lisbon base provides direct access to EU regulatory regimes, while our common law expertise supports enforcement and arbitration strategies in common law jurisdictions. We work with international businesses, institutional investors, and in-house legal teams who need results-oriented counsel across multiple legal systems. For a preliminary review of your enforcement situation in Japan, email info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.