Intellectual Property
Issues concerning intellectual property—such as patents, trademarks, copyrights, and trade secrets—require advanced expertise and are critical areas directly impacting corporate competitiveness and management decisions. Our firm has handled numerous complex and cutting-edge cases, contributing to landmark intellectual property cases and precedent-setting rulings in Japan.
Leveraging the expertise of our team, including former Chief Judge of the Intellectual Property High Court, Misao Shimizu, we provide clear guidance on the appropriate course of action for clients even in complex situations, reliably supporting strategic decision-making. We offer practical solutions across a wide range of areas, including intellectual property litigation, international licensing agreements, and handling employee inventions.
Case Experience
Patent infringement lawsuit filed by a supplier against an automaker
Patent infringement litigation between major industrial machinery manufacturers
Patent infringement litigation between medical device manufacturers
Patent infringement litigation between chemical and health food manufacturers
Patent infringement lawsuit between pharmaceutical and food manufacturers
Patent infringement lawsuit against a highway operator
Patent decision cancellation litigation concerning significant pharmaceutical effects
Copyright infringement lawsuit concerning music schools
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Yohei Okuda gave a lecture entitled “The Latest Developments in Original Work Adaptation Agreements and Moral Rights of Authors 2026” at a seminar hosted by the Japan Research Institute for New Systems of Society. This seminar is available for on-demand viewing.
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Seminars
A feature article from a roundtable discussion attended by Misao Shimizu (“In-Depth Examination: Should Virtual Designs Be Protected under the Design Act?”) was published in the Annual Report on Intellectual Property Law 2025–2026 (Nihon Hyoronsha).
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Publications
An article co-authored by Yohei Okuda (“Treatment of Withholding Tax on Copyright Transactions”) was published in the December 2025 issue of Tax Bulletin.
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Publications
Yohei Okuda gave a lecture entitled “A Perspective on the Right of Integrity: Using the Adaptation of Original Works into Film as Material” at the 8th Intellectual Property Practice Lecture Series co-hosted by the Yamaguchi University Faculty of Global and Science Studies and Intellectual Property Center.
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Seminars
