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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Lawyers in charge of Intellectual Property Dispute Resolution

PublicationsArchives

2026.01.30
(Q67) Principle of Territoriality
2025.01.20
Article 10 (Orders to Protect Confidentiality); Article 11 (Rescission of Protective Orders)
2025.01.10
Decision of the Court of First Instance of the Unified Patent Court Central Division (Section Munich)on July 16 2024 -- A Central Attack on a Patent for an Antibody Drug Characterized by Means
2020.09.10
Analysis of Domestic Court Cases concerning Inventions Related to Computer Software (CS)
2020.08.13
Consideration on the Bill of the Act Partially Amending the Plant Variety Protection and Seed Act -- For the Protection of New Varieties of Plants
2019.07.10
A Case in Which Production, Transfer, etc. of Software was Found to Constitute Indirect Infringement of an Invention of a Device (Article 101, Item (ii) of the Patent Act)
2019.05.30
Q13: Inventiveness (4) -- Methods of Business; Q42: Application (2) -- Supporting Requirements, etc.; and Q76: Terms of Claims
2019.05.10
Analysis of Recent Trends in Case Court Cases Regarding Inventive Step
2018.07.06
7. Multiple Rightholders
2018.05.28
Transfer
2017.09.29
"Significant Effects" in Pharmaceutical Inventions as Seen in Recent Court Cases of Litigation Rescinding JPO's Trial/Appeal Decision Concerning Patent
2015.03.20
Chapter 2: Inoventive Steps in the Chemical and Pharmaceutical Fields
2014.11.20
Antibody Drugs: "Correction of Error" in a Claim That Includes Identification Based on Amino Acid Sequence
2014.11.10
U.S. Supreme Court Decision in the Myriad Case and Its Implications
2014.09.05
Article 10 (Orders to Protect Confidentiality); Article 11 (Rescission of Protective Orders)
2013.08.10
U.S. Supreme Court Decision in the Myriad Case (June 13, 2013) -- Eligibility of Gene Patents as Subject Matter of Patent Protection
2012.04.11
Ⅲ-2. Claims by Multiple Rightsholders
2011.10.05
Scope of "Action Involving Patent Right" -- Freezing System Case
2010.11.19
Ⅲ. Exhaustion of Patent Right -- Ink Cartridge Case
2007.06.25
Chapter 3, Section 1, Ⅲ. Research/Technology Service Contracts

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SeminarsArchives

2026.02.17
JPAA Symposium Commemorating the 20th Anniversary of the Accreditation System for Conducting Specified Infringement Litigation Representation Services; Pannel Discussion "Recent Intellectual Property Infringement Litigations"
2024.11.15
Decision of the Court of First Instance of the Unified Patent Court, Central division (Section Munich) on July 16, 2024 459505/2023 (UPC_CFI_1/ 2023)
2024.04.24
【Online Seminar】 Seminar on Legal Practices for Companies Expanding Their Business Abroad (11): Features and Points to Note concerning Patent Infringement Litigation in the U.S. through Comparison with Patent Infringe Litigation in Japan
2024.02.29
U.S. Dispute Cases Involving Antibody-Drug Conjugate (ADC)
2023.01.26
Ideal Way to Protect Genetic Resources, Including Plant Varieties
2021.10.21
Judicial Symposium on Intellectual Property (JSIP) Tokyo 2021 -- IP Dispute Resolution in Asia -- Program by Ministry of Justice: "Civil Suits Involving Trademark Infringement"
2020.11.30
Court Case Study on Invention of Antibody Drugs Defined by Using Functional Descriptions
2018.02.21
JPAA Patent Committee Open Forum 2017: "Points to Note Concerning Patent Specifications Based on Recent Court Decisions -- From the Perspective of Patentability and Fulfillment Theory"
2017.09.08
Points to Note in Non-Disclosure Agreements
2017.07.10
Litigation Rescinding JPO's Trial/Appeal Decision in the Pharmaceutical and Biotechnology Fields -- Recent Court Cases
2016.11.29
Technical Standards and Intellectual Property
2016.07.13
Practice of Intellectual Property Infringement Litigation -- Focusing on Pharmaceutical, Biotechnology, and Chemical Fields
2010.07.22
Intellectual Property Training Seminar Series, 8th Session: "Multiple Rightsholders"
2003.11.26
Industry-Academia Collaboration Seminar, 1st Session: "Infringement of Rights and Litigation"

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