{"id":125,"date":"2026-10-31T12:22:05","date_gmt":"2026-10-31T03:22:05","guid":{"rendered":"https:\/\/brandagent.jp\/en_blog\/japan-trademark-risks-of-not-registering\/"},"modified":"2026-11-02T16:34:35","modified_gmt":"2026-11-02T07:34:35","slug":"japan-trademark-risks-of-not-registering","status":"publish","type":"post","link":"https:\/\/brandagent.jp\/en_blog\/japan-trademark-risks-of-not-registering\/","title":{"rendered":"Do You Need a Trademark in Japan? Risks of Not Registering for Overseas Brands"},"content":{"rendered":"<p><span style=\"font-size: 120%;\">&#8220;We are only testing the Japanese market \u2014 do we need a trademark yet?&#8221; &#8220;Nobody has copied us so far, so why bother?&#8221;<\/span><\/p>\n<p><span style=\"font-size: 120%;\">In this article, Japanese Patent Attorney Toru Kano of BrandAgent explains whether trademark registration in Japan is really necessary, and what can happen if you do not register \u2014 written for overseas companies, individuals and cross-border e-commerce sellers.<\/span><\/p>\n<div class=\"st-mybox  has-title st-mybox-class\" style=\"background:#f1f8e9;border-color:#a5d6a7;border-width:2px;border-radius:5px;margin: 25px 0 25px 0;\"><p class=\"st-mybox-title\" style=\"color:#4caf50;font-weight:bold;text-shadow: #fff 3px 0px 0px, #fff 2.83487px 0.981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff 0.705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px 0.42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff 0.850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;\"><i class=\"fa fa-check-circle st-css-no\" aria-hidden=\"true\"><\/i>Conclusion first<\/p><div class=\"st-in-mybox\">\n<ul>\n<li><span style=\"font-size: 120%;\">Registration is not mandatory for everyone, but it is <strong>very important<\/strong> if you will invest in a brand name in Japan.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">The main reason: it reduces the risk of someone else taking your name first.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">The risks of not registering: forced rebranding, warning letters, and difficulty stopping copycats.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">It matters most if you will use the name long term, advertise, sell on Amazon Japan \/ Rakuten, or expand through distributors.<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n<h2><span style=\"font-size: 120%;\">Why register a trademark in Japan at all?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">The purpose is simple: to keep using your brand name in Japan with confidence. This applies to company names, brand names, product names, service names, logos, store names and app names.<\/span><\/p>\n<p><span style=\"font-size: 120%;\">The more value the name gains through advertising, social media, reviews and sales, the more unstable your position becomes without a registration. And because trademark rights are territorial, your registration at home does not help you in Japan.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">What happens if you do not register?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">Problems do not always appear immediately. But there are four main risks.<\/span><\/p>\n<h3><span style=\"font-size: 120%;\">1. Someone else registers your mark first<\/span><\/h3>\n<p><span style=\"font-size: 120%;\">Japan is first-to-file. Even if you have used the name for a long time, a third party who files a similar mark first can put you in a difficult position. For overseas brands, the most common cases are resellers, former distributors and squatters who register a brand that is starting to sell well in Japan. &#8220;We are already using it&#8221; is not enough.<\/span><\/p>\n<h3><span style=\"font-size: 120%;\">2. You may have to change the brand name<\/span><\/h3>\n<p><span style=\"font-size: 120%;\">Rebranding means redoing packaging, labels, your Japanese website, social media, marketplace listings and advertising. Beyond the cost, the recognition and reviews you have built up are lost. On marketplaces, a forced name change can also mean losing listing history.<\/span><\/p>\n<h3><span style=\"font-size: 120%;\">3. You may receive a warning letter<\/span><\/h3>\n<p><span style=\"font-size: 120%;\">A trademark right covers similar marks used on similar goods\/services. If you use a name close to someone&#8217;s registered mark, you may receive a warning letter or a platform complaint, and your listings may be taken down. Whether there is actual infringement depends on the facts, but without your own registration you are always on the defensive.<\/span><\/p>\n<h3><span style=\"font-size: 120%;\">4. It is hard to act against look-alikes<\/span><\/h3>\n<p><span style=\"font-size: 120%;\">Without a registration, it is difficult to take a firm stand against third parties using similar names. With a Japanese trademark right, you can seek an injunction and damages, and you can use the registration for Amazon Japan Brand Registry and infringement reports on Rakuten and other platforms.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">Who should consider registration most?<\/span><\/h2>\n<ul>\n<li><span style=\"font-size: 120%;\">Brands that will keep using a product or service name in Japan<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Businesses spending on advertising in Japan<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Sellers on Amazon Japan, Rakuten, Yahoo! Shopping and other platforms<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Brands planning to work with Japanese distributors, licensees or franchisees<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Brands planning to expand into Japan as part of a multi-country strategy<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 120%;\">One-off event names or names used only briefly may be a lower priority. The key question is: <strong>will you invest in this name in Japan?<\/strong><\/span><\/p>\n<h2><span style=\"font-size: 120%;\">Is a company registration enough?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">No. Company registration and trademark registration are separate systems. Company registration concerns the company name as a legal entity; trademark registration protects a brand name in relation to specific goods and services. Even if you set up a Japanese subsidiary under the brand name, that does not give you a trademark right.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">Is owning the domain enough?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">No. A domain name is like an address on the internet; owning it does not create a trademark right. The same is true of a marketplace store name or a social media account \u2014 without a registration, your brand protection is not sufficient.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">&#8220;We are small, so we don&#8217;t need it yet&#8221; \u2014 true?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">Half true, half dangerous. While you are small, disputes may not arise. But changing the name after you have grown costs far more: packaging, recognition, reviews, search rankings, followers and marketplace ratings are all affected.<\/span><\/p>\n<p><span style=\"font-size: 120%;\">In fact, squatters tend to target brands just as sales in Japan start to grow. The practical yardstick is not your size, but whether this is a name you intend to grow.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">Are there cases where you can skip registration?<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">It is hard to say registration is ever completely unnecessary, but it can be a lower priority for:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 120%;\">Names used only for a short-term event<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Product names you do not plan to use for long<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Internal project names that are not used publicly<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 120%;\">For any name you will keep using in Japan, it is safest to consider registration early.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">The best time to file<\/span><\/h2>\n<p><span style=\"font-size: 120%;\">Ideally, <strong>after deciding the name but before investing seriously in Japan<\/strong>:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 120%;\">Before launching the brand, product or service in Japan<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Before launching a Japanese website or starting advertising<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Before opening a store on Amazon Japan, Rakuten or other platforms<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 120%;\">If you filed at home within the last 6 months, you can claim Paris Convention priority for your Japanese application. If you are filing in many countries, a Madrid designation of Japan is another option, though if the JPO raises an objection, a Japanese patent attorney will be needed to respond.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">What to do before filing<\/span><\/h2>\n<ul>\n<li><span style=\"font-size: 120%;\">Decide which name and\/or logo you want to protect<\/span><\/li>\n<li><span style=\"font-size: 120%;\">List the goods and services you sell or plan to sell in Japan<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Check for earlier conflicting marks in Japan (prior search)<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Prepare the applicant&#8217;s name and address in the original language and in English<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 120%;\">An applicant with no domicile or business office in Japan must file through a Japanese patent attorney. At BrandAgent, the prior search is free when you instruct us to file, and consultations and quotes are always free.<\/span><\/p>\n<h2><span style=\"font-size: 120%;\">Not registering vs. registering<\/span><\/h2>\n<table style=\"border-collapse: collapse; width: 100%;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f5f5f5;\">\n<th style=\"padding: 8px; text-align: left;\"><span style=\"font-size: 120%;\">Item<\/span><\/th>\n<th style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Not registered<\/span><\/th>\n<th style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Registered<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><span style=\"font-size: 120%;\"><strong>Stability of the name<\/strong><\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Easily unstable<\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Easier to protect<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><span style=\"font-size: 120%;\"><strong>Dealing with copycats<\/strong><\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Difficult<\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Easier to act<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><span style=\"font-size: 120%;\"><strong>Defense against warnings<\/strong><\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Weak<\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">More predictable<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><span style=\"font-size: 120%;\"><strong>Platform brand protection<\/strong><\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Limited<\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Available<\/span><\/td>\n<\/tr>\n<tr style=\"background-color: #f0f7ff;\">\n<td style=\"padding: 8px;\"><span style=\"font-size: 120%;\"><strong>Safety of brand investment<\/strong><\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\">Low<\/span><\/td>\n<td style=\"padding: 8px; text-align: center;\"><span style=\"font-size: 120%;\"><strong>High<\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span style=\"font-size: 120%;\">FAQ<\/span><\/h2>\n<ul>\n<li><span style=\"font-size: 120%;\"><strong>Q. Is trademark registration absolutely necessary?<\/strong><br \/>\nA. Not for everyone, but it is important for any brand or service name you will keep using in Japan.<\/span><\/li>\n<li><span style=\"font-size: 120%;\"><strong>Q. Is it illegal not to register?<\/strong><br \/>\nA. No. But using a name close to someone else&#8217;s registered mark can cause problems.<\/span><\/li>\n<li><span style=\"font-size: 120%;\"><strong>Q. Our mark is registered in our home country. Isn&#8217;t that enough?<\/strong><br \/>\nA. No. Trademark rights are territorial; you need a Japanese registration.<\/span><\/li>\n<li><span style=\"font-size: 120%;\"><strong>Q. We are a small seller. Should we still register?<\/strong><br \/>\nA. If you will keep using and growing the name in Japan, it is worth considering early, regardless of size.<\/span><\/li>\n<li><span style=\"font-size: 120%;\"><strong>Q. How much does it cost?<\/strong><br \/>\nA. For 1 class, about JPY 79,200 (5 years) or JPY 94,900 (10 years) in total, including official fees and BrandAgent&#8217;s fees of JPY 25,000 per class at filing and at registration (excluding tax, where applicable).<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-size: 120%;\">Summary<\/span><\/h2>\n<div class=\"st-mybox  has-title st-mybox-class\" style=\"background:#f1f8e9;border-color:#a5d6a7;border-width:2px;border-radius:5px;margin: 25px 0 25px 0;\"><p class=\"st-mybox-title\" style=\"color:#4caf50;font-weight:bold;text-shadow: #fff 3px 0px 0px, #fff 2.83487px 0.981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff 0.705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px 0.42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff 0.850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;\"><i class=\"fa fa-check-circle st-css-no\" aria-hidden=\"true\"><\/i>Key points<\/p><div class=\"st-in-mybox\">\n<ul>\n<li><span style=\"font-size: 120%;\">Registration is not legally required, but it is very important for names you will invest in in Japan.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Without it, you risk squatting, forced rebranding, warning letters and difficulty stopping copycats.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Company registration, domain names and store names are not substitutes.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">File after deciding the name and before investing in Japan.<\/span><\/li>\n<li><span style=\"font-size: 120%;\">Foreign applicants must file through a Japanese patent attorney \u2014 every BrandAgent case is handled personally by a licensed attorney.<\/span><\/li>\n<\/ul>\n<\/div><\/div>\n<h2 id=\"related-articles\"><span style=\"font-size: 120%;\">Related articles<\/span><\/h2>\n<ul>\n<li><span style=\"font-size: 120%;\"><a href=\"https:\/\/brandagent.jp\/en_blog\/japan_trademark_registration\/\">What Is Trademark Registration in Japan? How It Works, Benefits, Costs and Process for Foreign Applicants<\/a><\/span><\/li>\n<li><span style=\"font-size: 120%;\"><a href=\"https:\/\/brandagent.jp\/en_blog\/japan_trademark_search\/\">Trademark Search in Japan: How to Check Prior Marks Before Filing (and What People Miss)<\/a><\/span><\/li>\n<li><span style=\"font-size: 120%;\"><a href=\"https:\/\/brandagent.jp\/en_blog\/japan-trademark-oem-manufacturing\/\">OEM Manufacturing and Japanese Trademarks: Who Should Own Your Brand in Japan?<\/a><\/span><\/li>\n<li><span style=\"font-size: 120%;\"><a href=\"https:\/\/brandagent.jp\/en_blog\/japan_trademark_infringement\/\">Accused of Trademark Infringement in Japan? How to Respond to a Warning Letter or an Amazon\/Rakuten Complaint<\/a><\/span><\/li>\n<\/ul>\n<div style=\"background-color: #f0f7ff; border: 2px solid #0066cc; padding: 20px; margin: 24px 0; border-radius: 6px;\">\n<p><span style=\"font-size: 120%;\"><strong>Planning to protect your brand in Japan?<\/strong><br \/>\nTell us your mark and your products \u2014 we will reply with the classes you need and a fixed quote, free of charge.<\/span><\/p>\n<p><span style=\"font-size: 120%;\">BrandAgent Patent Office (Kyoto, Japan)<br \/>\nToru Kano, Japanese Patent Attorney<\/span><\/p>\n<p><a style=\"color: #0066cc; font-weight: bold;\" href=\"https:\/\/brandagent.jp\/en\/trademark_lp\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 120%;\">Get a free quote for your Japanese trademark<\/span><\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Is trademark registration in Japan really necessary? A Japanese patent attorney explains the risks of not registering for overseas brands and e-commerce sellers: squatting, forced rebranding, warning letters and copycats.<\/p>\n","protected":false},"author":1,"featured_media":334,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trademark"],"_links":{"self":[{"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/posts\/125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/comments?post=125"}],"version-history":[{"count":1,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/posts\/125\/revisions"}],"predecessor-version":[{"id":197,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/posts\/125\/revisions\/197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/media\/334"}],"wp:attachment":[{"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/media?parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/categories?post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brandagent.jp\/en_blog\/wp-json\/wp\/v2\/tags?post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}