Japan Compliance

Legal Insights for Business Professionals

Idea vs. Expression in Japan: How Do Japanese Courts Distinguish Between Non-Protectable Ideas and Protectable Expressions in Copyright Law?

One of the most fundamental yet challenging dichotomies in copyright law globally is the distinction between an idea and its expression. Japanese copyright law, in line with international norms, firmly upholds the principle that copyright protects the specific, creative expression of thoughts or sentiments, not the thoughts, sentiments, or abstract
6 min read

Why Does My Japanese Counsel Keep Talking About German Law? Understanding the Influence and Practical Relevance of Foreign Legal Systems in Japanese Civil Procedure

For international legal professionals engaging with the Japanese civil justice system, an occasional reference by Japanese counterparts to German legal concepts, doctrines, or even specific provisions of the German Code of Civil Procedure (Zivilprozessordnung - ZPO) might seem perplexing. Why would discussions about contemporary Japanese litigation delve into the legal
6 min read

Appealing a First Instance Judgment in Japan (Koso Appeal): What are the Possible Outcomes and How Does the "Prohibition of Disadvantageous Change" (Furieki Henkō Kinshi) Work?

The Japanese judicial system provides litigants with avenues to challenge unfavorable judgments rendered by courts of first instance. The primary mechanism for this is the Koso appeal (控訴), a first-level appeal typically lodged from a District Court (地方裁判所 - Chihō Saibansho) or Summary Court (簡易裁判所 - Kan'i Saibansho)
12 min read

Indispensable Co-litigation in Japan (Koyū Hitsuyōteki Kyōdō Soshō) - Part 2: How are Non-Cooperative Co-Plaintiffs Handled and What is the True Meaning of "Uniformity of Judgment"?

In Part 1 of this series, we established that Indispensable Necessary Co-litigation (Koyū Hitsuyōteki Kyōdō Soshō - 固有必要的共同訴訟) in Japan mandates the joinder of all essential parties for a lawsuit to proceed validly and for its judgment to achieve "Uniformity of Judgment" (gōitsu kakutei - 合一確定) concerning all
9 min read

Indispensable Co-litigation in Japan (Koyū Hitsuyōteki Kyōdō Soshō) - Part 1: What Distinguishes it from Similar Co-litigation and How Do Courts Approach "Uniformity of Judgment"?

In the realm of Japanese civil procedure, most lawsuits involve a single plaintiff against a single defendant, or multiple parties who join voluntarily for convenience (ordinary co-litigation). However, certain types of disputes necessitate the participation of multiple specific individuals as either plaintiffs or defendants for the lawsuit to proceed validly
10 min read

Navigating the Prohibition of Lis Pendens (Jūfuku Kiso) in Japan: When Does a Prior Declaratory Action Lose its "Interest" Due to a Subsequent Lawsuit?

The principle of lis pendens, known in Japan as jūfuku kiso no kinshi (重複起訴の禁止 – literally, "prohibition of duplicate institution of action"), is a cornerstone of efficient and orderly civil procedure. Its primary objective is to prevent the waste of judicial resources and party efforts that would result from
9 min read

Judicial Admissions in Japanese Civil Litigation: When is a Statement Binding and How Does it Differ from the Principle of Party Presentation's Second Thesis?

In Japanese civil procedure, statements made by parties in court can have significant consequences, particularly when they amount to an "admission" (自白 - jihaku). While the concept might seem straightforward, its legal effects and relationship with overarching procedural principles, such as the Principle of Party Presentation (Benron Shugi
9 min read