Harvey Partners with Legalscape to Bring Japanese Legal Intelligence to Cross-Border Teams

Today, Harvey announced a data partnership with Legalscape, Japan's leading legal data & AI company . The partnership integrates “Legal Intelligence by Legalscape” — spanning Japanese statutes, case law, and administrative guidelines alongside commentaries and practical literature — giving legal teams outside of Japan a direct route to the sources Japanese practitioners rely on.

The partnership expands Harvey's growing network of 1,000+ global legal data sources, reinforcing its position as the unified platform where lawyers can access, search, and cite legal knowledge from around the world. With Legalscape's trusted Japanese legal research AI integrated into Harvey, global lawyers will be able to access Japanese legal information alongside internal knowledge, precedent documents, and other integrated data sources without switching tools or losing context.

Example use cases include:

• Inbound investment and M&A: Advising clients on Japanese corporate and commercial law in acquisitions, joint ventures, and market entry.
• Cross-border disputes: Researching Japanese case law and procedure where Japanese parties or governing law are involved.
• Regulatory diligence: Understanding Japanese regulatory requirements and administrative guidelines when assessing Japanese targets or operations.
• Working with local counsel: Arriving at conversations with Japanese counsel already grounded in the relevant sources.

“Legal Intelligence by Legalscape” will be available through Harvey in the coming months. Customers interested in early access can contact their Harvey account team.

“Lawyers need AI grounded in the legal knowledge of the markets where they work. Our partnership with Legalscape brings legal research AI with authoritative Japanese legal knowledge into Harvey, giving lawyers around the world a stronger foundation for their research. Together, we’re connecting local legal expertise with a global platform built for the way lawyers work,” said John Haddock, Chief Business Officer at Harvey.

“We are delighted to partner with Harvey, a leading global legal AI platform. This partnership will bring Legal Intelligence by Legalscape to legal professionals around the world, while giving our customers in Japan a new way to access it. Responsibly delivering Japanese legal content through AI by encompassing official primary sources alongside authoritative commentary from our publishing partners is a major step toward our vision of bringing legal knowledge to every corner of society,” said Miki Yagita, Co-Founder, Representative Director & CEO of Legalscape.

Koji Toshima, Partner and CFO at Mori Hamada & Matsumoto, said, "Our firm began working with Legalscape in 2019 and with Harvey in 2024, exploring the potential of AI in legal work and advancing the use of cutting-edge technology in our practice. We believe that this partnership between two companies offering sophisticated systems, connecting two legal AIs so that Japanese legal information can be accessed through Legal Intelligence on Harvey, will bring significant value not only in Japan but to legal practice globally."

About Harvey

Harvey is the operating system for legal and professional services. Our products streamline workflows in areas including contract analysis, due diligence, compliance, and litigation to drive efficiency and value. Law firms and legal teams around the world use Harvey to enable faster, smarter decision-making. Backed by world-class investors including Sequoia, Kleiner Perkins, a16z, Coatue, EQT, GIC, GV, Goldman Sachs Alternatives, J.P. Morgan, Lightspeed, and the OpenAI Startup Fund, Harvey is used by 3,000+ customers in 70+ countries.

About Legalscape

Legalscape is a legal data & AI company whose strengths lie in advanced natural language processing and the research and real-world application of generative AI in the legal field. By supporting legal knowledge work and making trusted legal information more accessible and timely, Legalscape aims to help build a society where law better serves everyone.

As of October 2026, Legalscape partners with over 40 publishers, and its platform has been adopted by over 3,000 clients, including all of Japan's top five largest law firms by lawyer headcount, and 70% of the country’s 100 largest law firms by lawyer headcount have adopted the platform. Legalscape ranks No. 1 in Japan for revenue of its legal research AI.*

*Market research on “Legal Research Services” (No. 1 Verification Survey) conducted by Trending Future Research Institute Inc. (as of September 29, 2025).