A European technology brand had built significant market recognition over several years. When it began entering the Japanese market. It discovered that a local entity had already registered a nearly identical mark. under the same Nice classification (the international system grouping goods and services for IP registration purposes). covering precisely the goods the European company intended to sell. The window to protect the brand commercially was narrowing with each quarter of delayed entry.
This case study examines a cross-border trademark dispute in Japan in which Ferraz & Whitmore advised a European client on enforcement strategy and opposition proceedings against a bad-faith local registrant. The matter required coordinating Japanese IP registration procedures with European evidence, pursuing an infringement claim through administrative and judicial channels, and ultimately securing the client's ability to operate under its own mark in Japan. Resolution from initial instruction to outcome spanned approximately eighteen months.
This account outlines the client profile, the legal strategy selected and its rationale, the key milestones encountered. The complications that arose. Additionally, three transferable lessons relevant to any business facing a similar cross-border IP challenge in Japan.
Client profile and the challenge
The client was a mid-sized European software and hardware company. It had registered its trademark across the EU and in several Asian markets before Japan. Japan had been deprioritised during the initial international rollout – a decision that proved costly.
By the time the client approached us, a Japanese entity had already completed a trademark application and obtained registration under Japanese intellectual property legislation. The registered mark was phonetically and visually similar to the client's EU mark. The local registrant had no apparent commercial use of the mark. This pattern is characteristic of what practitioners in Japan refer to informally as shōhyō yattoridori (trademark squatting) – the opportunistic registration of foreign marks before the legitimate owner enters the market.
The client faced a direct lost opportunity: without resolving the IP registration conflict, it could not launch its products under its established brand identity in Japan. Rebranding for a single market would have cost significantly more than the enforcement proceedings themselves.
For related strategic context on IP protection across the Japanese market, see our overview of intellectual property services in Japan.
Strategy selected: opposition and cancellation proceedings
Japan's intellectual property system operates through the Japan Patent Office (JPO), which administers trademark applications, oppositions, and cancellations. Two principal routes were available to the client.
The first route was an opposition – available within two months of a trademark's publication in the Official Gazette. This window had already closed by the time the client instructed us. The second route was a cancellation action filed with the JPO, challenging the registered mark on grounds of bad faith and likelihood of confusion with a prior well-known mark. This was the route we pursued.
The strategy rested on three pillars. First, establishing that the client's mark was well-known in Japan prior to the local registration – even without prior Japanese registration. Japanese intellectual property legislation protects marks with demonstrated reputation, regardless of formal registration status in Japan. Second, demonstrating bad faith on the part of the local registrant, supported by evidence that no genuine commercial use had occurred. Third, documenting the likelihood of confusion for Japanese consumers across the applicable Nice classification categories.
A parallel civil infringement claim was prepared and held in reserve. The threat of judicial proceedings – with their higher cost and public exposure for the local registrant – formed part of the negotiating posture throughout.
Key milestones and complications encountered
The matter proceeded through four identifiable phases.
Phase 1 – Evidence assembly (months one to three). Gathering proof of the mark's international reputation required coordinating with the client's European counsel. Evidence included commercial records, marketing spend data, press coverage predating the Japanese registration, and third-party recognition in Asian markets. Japanese proceedings place significant weight on the breadth and consistency of reputation evidence. Assembling this in a format acceptable to the JPO required careful translation and notarisation.
Phase 2 – Cancellation filing (month four). The cancellation petition was filed with the JPO. Japanese procedural rules require detailed written submissions at the outset. Amendments after filing are restricted. This front-loaded drafting requirement is a common point of difficulty for foreign applicants unfamiliar with Japanese practice.
Phase 3 – Respondent's reply and hearing (months five to ten). The local registrant contested the cancellation. It submitted limited evidence of purported use – documentation that appeared manufactured rather than reflecting genuine commercial activity. The JPO examiner requested additional submissions from both parties. We filed a supplementary brief addressing each point raised, reinforcing the bad-faith argument with comparative analysis of the marks across the relevant Nice classification groupings.
Phase 4 – Negotiated resolution (months eleven to eighteen). Before the JPO issued its formal decision, the local registrant signalled willingness to negotiate. The combination of a strong cancellation record and the standing civil infringement claim shifted the leverage clearly toward the client. A transfer agreement was concluded under which the local registrant assigned the disputed registration to the client for a nominal consideration. The client's own trademark application was then filed and prosecuted to registration.
The primary complication throughout was evidentiary: demonstrating Japan-market reputation without prior Japan-market presence required creative but rigorous use of third-country evidence and spillover recognition data. A secondary complication arose from the time pressure on the client's commercial launch schedule, which required managing the litigation timeline against business milestones.
Businesses navigating technology-adjacent IP challenges in Japan may also find it useful to review our analysis of AI and technology law in Japan, where overlapping IP and regulatory considerations frequently arise.
To explore how a structured enforcement strategy could apply to your trademark situation in Japan, contact us at info@ferrazwhitmore.com.
Three transferable lessons
Lesson 1 – Register early in Japan, not after other markets. Japan operates a first-to-file system under its intellectual property legislation. The client's decision to defer Japan registration created the entire dispute. For any business with a coherent international rollout plan, Japan should be included in the initial trademark application portfolio – ideally at the same time as EU or US filings. The cost of early registration is a fraction of the cost of a contested cancellation proceeding.
Lesson 2 – Reputation evidence must be built before you need it. The strength of the cancellation case depended entirely on the quality of the reputation evidence assembled. Businesses that maintain organised records of marketing activity, revenue by market, and third-party recognition – even in markets where they are not yet formally present – are significantly better positioned when a dispute arises. The absence of such records is a structural weakness that opponents will exploit.
Lesson 3 – Parallel pressure produces faster resolution. The civil infringement claim held in reserve was never filed. Its existence, documented in correspondence, was sufficient to alter the cost-benefit calculus for the local registrant. In Japanese IP disputes, as in comparable proceedings elsewhere, the credible threat of escalation frequently produces settlement before adjudication. Structuring the enforcement posture to include multiple available routes – administrative cancellation, civil litigation, and customs recordal – gives the legitimate rights-holder meaningful leverage at each stage. For a comparable approach applied in a different high-growth market, see our case study on a cross-border trademark dispute in the UAE.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our intellectual property practice covers trademark application strategy, opposition proceedings, infringement claims, and cross-border IP enforcement across Asia-Pacific, European, and Middle Eastern markets. As a law firm in Japan matters, we bring together practitioners with experience before the Japan Patent Office and in civil proceedings under Japanese intellectual property legislation. We work with international entrepreneurs, technology companies, and institutional investors who require results-oriented counsel across civil law and common law systems alike. Engaging a lawyer in Japan with cross-border experience is particularly important where reputation evidence spans multiple jurisdictions – a challenge our team handles routinely. To discuss your IP situation in Japan or any other jurisdiction, contact us at 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.