Intellectual Property Dispute Resolution

Our firm has a practice group that specializes in domestic and international intellectual property dispute resolution. For domestic intellectual property disputes, various types of proceedings, such as infringement lawsuits, trials before the Japan Patent Office, litigation rescinding trial decisions, and injunctions on importations at customs, may occur. Our practice group has several intellectual property lawyers with significant practical experience in all of the foregoing procedures, capable of organizing appropriate teams according to the scale and complexity of a case, and able to provide high quality legal services. We have handled cases in various industrial fields, including electronic devices, semiconductor, IT, energy, environment, pharmacy, life science, healthcare, and consumable goods. Our firm also has extensive experience not only in handling large-scale disputes, but medium- and small- scale disputes as well.

In addition to our accomplishments in infringement lawsuits, we have also achieved considerable success in handling disputes on inventions developed by employees, disputes over who the inventor is, and litigation relating to extensions in the duration of the registration of pharmaceutical products, litigation or arbitration arising from license agreements, and litigation under unfair competition prevention laws.

For international intellectual property disputes, we provide comprehensive legal support to companies involved in various cases, such as patent lawsuits that are simultaneously filed overseas (including in the United States and Europe) as well as intellectual property enforcement actions (litigation/administrative enforcement), and trademark invalidation litigation in Asia. In handling cross-border disputes over intellectual property, which occur in global business developments by companies, we assist in resolving such disputes effectively and strategically, making use of our strong network of law firms all over the world.

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Legal Issues Related to Generative AI
Judgment in Which the Court Determined Whether or Not the Relevant Act Constitutes an Indirect Infringement by a Non-Exclusive Article (Item 2, Article 101 of the Patent Act) Pertaining to Invention of a Product- Requirements for Indirect Infringeme
Thematic-based: Legal Practice in the Healthcare Business
National Comparison Tables - Japan part
Summary of Countermeasures for Counterfeit Products in the US
A Case in Which the Applicability of Article 3, Paragraph 1, Item 3 of the Trademark Act was Disputed with Respect to the Trademark "VEGAS" (Intellectual Property Newsletter (2022 February Issue))
A Detailed Explanation of Economic Partnership Agreements
A Case in Which a Court Admission Rendered in the First Trial was Overturned upon Considering Issues of Conventional Technology and Revising Judgment Based on the Fulfillment Theory (Intellectual Property Newsletter (2021 August Issue)
A Case in Which the Japan Patent Office and the Court Reached Different Decisions Regarding Similarity in the Inventive Step of Two Inventions (Intellectual Property Newsletter (2021 May Issue))
Patent Enforcement Practices Before, During and After Patent Litigation Proceedings in Japan - A Comparative Analysis with Germany and the United States -
A Case Involving a Dispute Over Similarity of Trademarks and Other Matters Related to Services Supporting Job Seeking Activities by Currently Unemployed Recent Graduates with Work Experience (Intellectual Property Newsletter (2021 March Issue))
Intellectual Property Newsletter (Digest version) (2021 Winter Issue) Key Points in Reading Case Reports
The Ways of Limiting Injunctive Relief in Patent Infringement Litigation and their Effects - Current Japanese Practices and Suggestions for their Future Improvements, based on the Recent Trends in Germany and the United States -
Business and IP commitments in Economic Partnership Agreements (EPAs)
The Compass for Intellectual Property Law - The Supreme Court Ruled on a Re-defense based on a Correction of Claims against a Patent Invalidity Defense in a Patent Infringement Case
IP Laws of the Philippines
Q&A on the Actual Practice of Employee Inventions (Keiso's Law and Practice Series)(co-author)
Reading of U.S. Supreme Court Cases: Commentary on Intellectual Property and Business Cases in the 21st Century
Commentary on FTA/EPA Negotiations
Guide to International Legal Practice (1) to (11)