Since its establishment in 1990, Yamauchi Patent Attorneys has earned the trust of a wide range of clients and has built a strong track record over more than three decades.
We have also authored and published professional books based on our extensive practical experience.

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We have extensive experience handling both outbound and inbound intellectual property matters. We assist Japanese clients in securing intellectual property protection overseas and represent foreign companies and IP law firms seeking protection in Japan.
Drawing on our experience working with associates in numerous countries and regions around the world, we help clients obtain effective intellectual property rights tailored to their business needs.

Our firm includes a patent attorney dedicated to trademark practice, providing comprehensive support for trademark protection in Japan and abroad.
We also provide practical branding advice, combining trademark expertise with professional knowledge of brand management.

We have extensive experience supporting startups and small and medium-sized enterprises in building, protecting, and leveraging their intellectual property.
With an understanding of the challenges that arise at different stages of business growth, we provide practical advice tailored to each client's needs.