Services and Practice Areas
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Patents
We provide services to help our clients, from start-ups to global corporations, develop their inventions (innovations) into globally valuable patent portfolios.
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Designs & Trademarks
With a global, Internet-era perspective, and in view of our clients' competitive relationship with other companies, we support the development and protection of trademarks and brands.
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Litigation & Strategy
We have the technical and organizational capacity to work on multi-jurisdictional, cross-border litigation. We will help your company tailor your strategy and, in patent prosecution, provide advice on cost and perform prior art searches as appropriate.
About Us
Since our founding in April 1974, we have been enhancing our strengths by building a team of highly experienced bilingual patent attorneys and engineers with knowledge in a wide range of technical fields and who have considerable corporate and industry experience and/or were past patent examiners at the JPO.
Professionals
Our team is built of highly experienced, bilingual patent attorneys and engineers with knowledge in a wide range of technical fields and who have considerable corporate and industry experience and/or were past patent examiners at the JPO.
IP Guidance
Learn about Japanese patent, trademark, and design law and practice from our Q&A format guidance.
News
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New Publication: “Legal Protection for Computer-Implemented Inventions” Co-authored by Managing Partner Yasuhiro Ohtsuka
2025.12.26We are pleased to announce the publication of the latest edition of "Legal Protection for Computer-Implemented Inventions: A Practical Guide," a definitive...
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New patent engineers joined our firm
2025.12.25We are pleased to announce that we have updated our list of professionals with the addition of two new patent engineers. Kohei Kawakita specializes in...
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Announcement of New Patent Attorney Joining Our Firm
2024.10.01We are pleased to announce that Daisuke Murakami has joined our firm as a Patent Attorney. Mr. Murakami was registered as a patent attorney in 2022 (Reiwa...