Legalscape's Legal Research AI Adopted by One in Three Nikkei 225 Companies

Legalscape Inc. has confirmed through a matching survey based on corporate identification numbers that its legal research platform, "Legalscape," has been adopted by 79 of the 225 companies in the Nikkei Stock Average index (as of April 2026, based on internal research). The adoption rate has reached 35.1%, showing the platform is becoming well-established as a research foundation within the legal departments of major corporations.

Background: AI in Legal Research Expands from Law Firms to Corporate Legal Departments In March 2026, Legalscape announced that approximately 10,000 lawyers, or one in five in Japan, use "Legalscape." While the platform has seen widespread adoption primarily in law firms, the need for advanced legal research has also been growing within corporate legal and compliance departments in recent years. Corporate legal tasks, such as contract reviews, legal due diligence in M&A, development of internal regulations, and legal risk assessment for new businesses, are becoming increasingly complex. A research environment that allows for cross-searching and verification of vast amounts of laws, precedents, and books is indispensable for these tasks, leading to a growing number of companies adopting "Legalscape" as their legal department's research foundation.

Survey Overview The survey was conducted by matching the corporate identification numbers of Nikkei 225 companies with the corporate identification numbers in Legalscape's contract data. - Target: 225 companies in the Nikkei Stock Average (as of April 2026) - Matching Method: Strict matching by corporate identification number - Result: 79 out of 225 companies are under contract (35.1% adoption rate) - Survey Date: April 2026 When including contracts under the names of subsidiaries and affiliated companies, the adoption rate rises to 43.6% (98 companies).

A Legal Research Platform as "Infrastructure" for the Legal Profession The adoption by one in five lawyers and one in three Nikkei 225 companies indicates that "Legalscape" has moved beyond being a tool for early adopters and is becoming widely accepted as a fundamental part of legal practice. Legalscape offers an AI research function that combines generative AI with proprietary natural language processing technology, along with over 40,000 legal information content items, including more than 4,500 books. It supports the quality of legal judgments and reduces research time by allowing users to cross-search laws, precedents, guidelines, and books, with AI providing summaries. The continued adoption by both law firms and corporate legal departments is expected to elevate the overall research environment in the legal field, thereby strengthening society's legal foundation.

About the Legal Research Platform "Legalscape" "Legalscape" is a legal research platform launched in June 2021. AI instantly summarizes necessary legal information, providing quick access to what users need to know. In September 2023, it became the first in Japan to introduce an AI research function combining generative AI with its proprietary natural language processing technology. The platform is valued for its next-generation experience that provides a comprehensive overview of books, laws, and guidelines, and for its industry-leading content volume (over 40,000 items, including more than 4,500 books). It is used by legal professionals nationwide, including the top five law firms, major corporate legal departments, local law firms, and offices of labor and social security attorneys and judicial scriveners.

About Legalscape Inc. With the purpose of "implementing the future of legal society through the co-creation of people and technology," Legalscape is a legal data and AI company. Its strengths lie in advanced natural language processing and foundational and applied research of generative AI in the legal field. The company aims to realize a richer legal society by supporting intellectual production related to law and delivering legal knowledge more accurately, swiftly, and to every corner of society.