The sixth edition of the Insurance Disputes Law Review has been released. The publication provides practical guidance and commentary on recent trends in insurance disputes across major legal jurisdictions. 

Our Managing Partner, Shinichiro (“Shin”) Mori, authored the Japan Chapter.

Please click the following link to view the full publication on The Law Review’s website.


We have published a new column titled “Brand Protection in the Gaming Industry – What Actions Should Rights Holders Take When Counterfeit Character Merchandise is Sold?” For more details, please refer to the link below.


Mori & Partners’ M&A-related column has been featured on Esports Legal News (ELN), a specialized website for gaming and esports based in Europe. For more details, please refer to the ELN article at the following link.


We are delighted to share our latest legal column, “Acquiring Mobile Gaming Enterprises: Seven Essential Legal Due Diligence Checkpoints.” This piece delves into key legal aspects of Mergers and Acquisitions in Japan’s e-gaming sector, especially focusing on due diligence. We touch upon topics like disclosure to game users, information security measures, required government filings, handling of unused in-game currency balances, and overall regulatory compliance. For a deeper understanding, we encourage you to explore the article using the link below.


We are excited to share a new legal column from our legal team at Mori & Partners, titled “Fair and Square?: Understanding Esports Player Contracts in the Japanese Market.” This article sheds light on the multifaceted world of esports contracts, touching on topics such as player’s publicity rights, transfer restrictions, game account rights, and points to note when dealing with minor players. For a more in-depth look into this topic, we invite you to peruse the piece using the link below.


We are delighted to announce that our legal experts at Mori & Partners have released a new column titled “Call of Legal Duty: Navigating the Payment Services Act for In-game Currency in Japan” for Mori & Partners’ eSports & Gaming Legal Website. The article aims to elucidate some of the nuances of compliance particularly for foreign gaming companies venturing into the Japanese market. It focuses on the often overlooked areas of the Payment Services Act that directly impact the sale of in-game items. We invite you to explore the insights using the link provided below. 


We are delighted to announce that Mori & Partners’ eSports & Gaming Legal Website and eSports legal services have been featured on renowned eSports and gaming information platforms, eSports World, eSports News Japan, and e-Sports Business.jp. We invite you to explore the featuers via the following links:


We are pleased to announce that our legal experts at Mori & Partners have released a new column titled “Considerations under the Payment Services Act when Selling Items in Games” for Mori & Partners’ eSports & Gaming Legal Website. The column delivers detailed insights into the topic and we invite you to explore these insights using the link provied below. The English version of this column will be made available in due course.


We are delighted to announce that Mori & Partners’ eSports & Gaming Legal Website and eSports legal services have been showcased on renowned eSports and gaming information platforms, BeSporter.jp and Gamer. We invite you to explore the featuers via the following links:


Mori & Partners is dedicated to providing quality, prompt, and business-focused legal solutions for our clients.

Mori & Partners is a law firm dedicated to delivering exceptional legal services through our comprehensive understanding of domestic practice, expertise in international matters, and an expansive overseas network.

Our firm was founded with the vision of providing top-tier legal services and delivering exceptional results for our clients. The name “Mori & Partners” represents a commitment to fostering growth and success alongside our attorneys, employees, business partners, clients, and affiliated professionals.

In pursuit of this vision, we adhere to the following guiding principles:

  • Value-driven & Business-oriented Approach

Our foremost mission is to add value to our clients’ businesses through our legal services. We continuously strive to offer cutting-edge solutions, while always prioritizing our clients’ need for practical, business-oriented advice.

  • Diversity, Inclusion, and Fairness

To achieve our objectives, it is essential that our firm is comprised of highly motivated and exceptionally talented professionals who can engage in open and fearless exchanges of ideas. We are committed to cultivating a diverse, inclusive, flat, and fair work environment that fosters free and vigorous discussions and attracts top talent.

  • Integrity

Our team members understand that integrity is crucial in both personal relationships and business contexts. We pledge to maintain the highest level of integrity in all our words and actions.

Mori & Partners
Roppongi Hills North Tower 16F
6-2-31 Roppongi, Minato-ku
Tokyo 106-0032 Japan
T +813-6831-9281 F +813-6800-5542

LinkedIn Account


Shinichiro (“Shin”) Mori


Shinichiro (“Shin”) Mori is a seasoned attorney specializing in commercial dispute resolution, with a distinct emphasis on international arbitration, cross-border litigation, and product liability lawsuits. As a trusted advisor, Shin also provides comprehensive counsel to international clients seeking to establish or operating businesses in Japan, addressing a wide array of corporate, real estate, regulatory, and employment matters.

Furthermore, Shin has developed a noteworthy expertise in the burgeoning field of gaming and eSports, leveraging his legal acumen to navigate the unique challenges and opportunities this industry presents. As a gaming & eSports lawyer, Shin works at the intersection of technology, media, and business, providing strategic advice to organizations operating within this dynamic landscape.

Shin’s notable recent engagements include:

  • Representing a European-based manufacturer and its Japanese subsidiary in a dispute over alleged breaches of representations and warranties in an M&A transaction.
  • Acting on behalf of a U.S.-based IT company in a contract interpretation lawsuit before the Tokyo District Court.
  • Representing a leading Japanese insurance company group in a subrogation claim dispute against a party responsible for a product liability incident.
  • Defending a U.S.-based insurance company group against consumer claims in a product liability dispute involving an electrical device.
  • Serving as party counsel in ICC arbitral proceedings concerning the sale of a plant facility.

Practice Areas

  • Commercial Litigation & International Arbitration
  • Insurance
  • Employment
  • IT
  • Gaming & Esports


New York Bar
Japanese Bar (The Dai-ichi Tokyo Bar Association)


Master of Laws (LL.M.) at Columbia University, Law School
The University of Tokyo, School of Law (J.D.)
The University of Tokyo, Faculty of Law (LL.B.)

Professional Experience

Founder & Managing Partner, Mori & Partners, 2023
Partner, Momo-o, Matsuo & Namba, 2019
Country Representative (Japan), the Asia-Pacific Forum for International Arbitration (AFIA), 2016
Associate, Wilmer Cutler Pickering Hale and Dorr LLP, United Kingdom, 2015-2016
Associate, Momo-o, Matsuo & Namba, 2009


The Insurance Disputes Law Review: Edition 6 – Japan Chapter
Law Business Research Ltd. (2023)

Enforcement of Judgements 2022 (Japan Chapter)
Chambers and Partners (2022)

The Insurance Disputes Law Review; Edition 5 (Japan Chapter)
Law Business Research Ltd. (2022)

Enforcement of Judgements 2021 (Japan Chapter)
Chambers and Partners (2021)

Foreign Investments in Israel
Business Law Journal (November 2020)

International Arbitration 2020 (Japan Chapter)
Chambers and Partners (2020)

Cartels 2019 (Japan Chapter)
Mondaq (2019)

Practice on Information Management
Shin Nihon Hoki (2018)

International Arbitration 2019 (Japan Chapter)
Chambers and Partners (2018)

Q&A Shareholders Meeting Practices
Shojihomu (2012)

Practice on Information Management
Shin Nihon Hoki (2011)

Seminars and Presentations

  • Opening speaker at the Asia-Pacific Forum for International Arbitration (AFIA) seminar on AI, FinTech, and Space Arbitration, titled “Arbitration and New Tech Horizons: Brighter Days Ahead?”, 2023
  • Speaker, “Trends and Access to Third-Party Funding”, 2021
  • Lecturer, “International Arbitration (Advanced),” an e-learning series by JIDRC (Japan International Dispute Resolution Center), 2020
  • Speaker, “International Commercial Arbitration and Mediation—Key Issues for Resolving International Commercial Disputes”, 2020
  • Panelist, “New York State Bar Association’s International Section Global Conference”, 2019
  • Moderator, “YJAA-AFIA Joint Seminar”, 2017


T: +813-6831-9282
E: shinichiro.mori@mps-legal.com

Shinichiro Mori’s LinkedIn Account

Kentaro Sano


T: +813-6831-9283
E: kentaro.sano@mps-legal.com

Practice Areas

  • Employment
  • IT
  • Corporate
  • Mergers & Acquisition
  • Real Estate
  • Litigation
  • Legal Support for Start-up Businesses


Japanese Bar (The Dai-ichi Tokyo Bar Association)
Labor and Social Security Attorney(Tokyo Labor and Social Security Attorney Association)


Waseda University, School of Law (J.D.), 2018
Waseda University, Faculty of Law (LL.B.), 2016

Professional Experience

Senior Associate, Mori & Partners, 2023
Associate, Momo-o, Matsuo & Namba, 2020


Commercial Litigation & International Arbitration

Our firm possesses extensive experience representing clients before arbitral tribunals and domestic courts, having acted on behalf of multinational corporations as well as prominent domestic enterprises.

Our recent notable engagements encompass a diverse range of matters, including:

  • Representing a European-based manufacturer and its Japanese subsidiary in a dispute involving allegations of breached representations and warranties in an M&A transaction.
  • Advocating for a U.S.-based IT company in a Tokyo District Court lawsuit concerning contract interpretation.
  • Representing a renowned international hotel chain in Tokyo in a dispute over work-related claims brought by former employees.
  • Serving as party counsel in JCAA arbitral proceedings pertaining to the construction of a solar power plant.
  • Acting as party representative in ICC arbitral proceedings concerning the sale of a plant facility.

By drawing on our comprehensive expertise and attention to detail, we are committed to providing sophisticated and tailored legal solutions for our clients.


We offer comprehensive guidance to clients on a wide array of insurance matters, encompassing D&O insurance, reinsurance, captive insurance, and cyber insurance. Furthermore, we provide counsel on addressing inquiries and investigations from regulatory authorities, such as the FSA.

Our firm frequently represents both domestic and international insurers in insurance-related disputes, including product liability lawsuits and claims from insured parties.

Our recent insurance dispute resolution engagements include:

  • Representing and advising a major Japanese insurance company group in various product liability disputes involving consumers in Japan and the U.S., concerning pharmaceutical products, electrical appliances, and plant equipment.
  • Representing a U.S.-based insurance company group in a product liability dispute involving an electrical device.
  • Acting on behalf of a leading Japanese insurance company group in a subrogation claim dispute against a party responsible for a product liability incident.
  • Resolving numerous consumer claims for a global IT company as part of our TPA services.

By leveraging our diverse expertise and in-depth understanding of insurance matters, we are committed to delivering sophisticated and tailored legal solutions for our clients.

Mergers and Acquisitions

In M&A transactions, we offer comprehensive legal services throughout the entire process, including advising on suitable transaction structures, conducting due diligence, and negotiating and drafting definitive agreements. We are also capable of handling merger filing procedures in Japan.

Our recent M&A projects encompass:

  • Acquisition of a semiconductor-related manufacturer by a private equity fund.
  • Acquisition of a wholesaler by a private equity fund.
  • Acquisition of a Singapore-based IT company and its subsidiaries in Vietnam and Indonesia by a domestic IT company.
  • Business transfer of a domestic auto-parts manufacturer to another manufacturer in the U.S.
  • Share sale of a Japanese insurance company group’s subsidiary in Guam.
  • Exit (share sale) of an IT startup company by its founders.

Our team of experienced professionals is dedicated to delivering exceptional legal support tailored to our clients’ unique needs and objectives throughout the M&A process.


We offer comprehensive legal advice on employment contracts and internal policies to ensure a working environment that complies with relevant employment laws and regulations.

Our recent employemt-related services include:

  • Provided legal advice as Japanese counsel to a US-based IT company in a project involving global changes to their work environment (such as multiple adjustments to remote work and office attendance frequency during the COVID-19 pandemic).
  • Represented an international sports and social club as the defendant in a Tokyo District Court lawsuit involving overtime pay claims.
  • Acted as legal counsel for an international hotel chain’s Tokyo branch in a case where a former employee sought damages for the termination of their employment relationship.
  • Conducted a forensic investigation and provided legal advice on the appropriateness of disciplinary actions in response to a misconduct case involving an employee of a US-based IT company.
  • Negotiated on behalf of a fitness club in a case where a former employee claimed unpaid overtime, ultimately resolving the dispute.

By providing tailored and detailed advice, we help our clients navigate the complex field of employment law and create a legally compliant and positive work environment.


With years of experience advising both domestic and international e-commerce marketplaces on legal matters related to logistics, we possess unrivaled expertise in the following areas:

  • Reviewing and drafting transportation contracts between shippers and carriers, covering various stages of transportation, such as long-haul, middle mile, and last mile delivery.
  • Providing guidance on logistics-related laws and regulations in Japan, including the Consigned Freight Forwarding Business Act, Special Designation on Logistics by the JFTC, and automobile operator’s liability under the Act on Securing Compensation for Automobile Accidents.
  • Advising on compliance with customs regulations, import/export controls, and other international trade requirements.
  • Assisting clients in developing and implementing best practices for risk management and dispute resolution within their logistics operations.
  • Representing e-commerce marketplaces in lawsuits and claims involving carriers and end-customers, such as cargo loss and damage, delivery delays, or other service-related disputes.

Our extensive knowledge and experience in this field allow us to provide comprehensive and practical legal advice tailored to the unique challenges faced by e-commerce marketplaces and their logistics partners.

Esports & Gaming

As the e-sports and gaming industry in Japan continues to grow, it is subject to various laws and regulations, including but not limited to: (i) the Act against Unjustifiable Premiums and Misleading Representations, (ii) the Act on the Protection of Personal Information, (iii) the Act on Control and Improvement of Amusement Business, (iv) the Payment Services Act, and (v) the Penal Code.

Since the inception of e-sports in Japan, our attorneys have been providing expert advice to a range of stakeholders, such as international game companies, management organizations, sponsors, event organizers, and players, helping them navigate the complex legal landscape.

Our firm’s recent gaming-related services include:

  • Conducted due diligence on gaming law compliance for a European game publisher intending to distribute games in Japan.
  • Represented a game publisher in filing a notification to the Financial Services Agency as an issuer of prepaid payment instruments under the Payment Services Act.
  • Providing legal advice and drafting tournament rules for organizing competitions with cash prizes or other rewards.
  • Provided legal advice to game publishers on necessary display items under the Act on Specified Commercial Transactions for the sale of in-game currency, and drafted these display items.
  • Offering legal guidance and drafting management agreements between e-sports players and their respective teams.
  • Represented a game publisher in filing a notification to the Ministry of Internal Affairs and Communications based on Article 16, Paragraph 1 of the Telecommunications Business Act.
  • Advising on laws and regulations pertaining to e-sports and gaming, such as the Act against Unjustifiable Premiums and Misleading Representations, Act on Specified Commercial Transactions, Entertainment Business Act, Penal Code, among others.
  • Drafting and negotiating license agreements for game development, distribution, and merchandising.
  • Resolved a dispute over the termination of a contract between a professional team and a player.
  • Provided legal advice from the perspective of the Act Against Unjustifiable Premiums and Misleading Representations, Trademark Law, and Advertising Material Ordinances, etc., for TV and OOH (Out-of-Home) advertisements by a game publisher.
  • Drafted and provided legal advice on sponsor contracts for gaming and eSports-related events.

Furthermore, our firm operates and maintains a specialized e-sports legal website. For more information, please refer to the following link: Mori & Partners – Specialized Website for e-Sports & Gaming Businesses. Building on our past experience, we plan to regularly update the site with insightful columns and articles on e-sports legal matters. We remain committed to supporting the challenges and successes of businesses in the e-sports & gaming industry.

Construction & Real Estate

Our firm offers comprehensive legal services in the realm of real estate and construction projects, ensuring our clients receive expert guidance at every stage.

Our areas of expertise include:

  • Reviewing and drafting a wide array of transaction documents, encompassing purchase and sale agreements, lease and sub-lease agreements, and service agreements for office buildings, among others.
  • Providing tailored advice on real estate-related laws and regulations, including the Building Standards Act, the City Planning Act, and the Real Estate Brokerage Act.
  • Representing clients in various real estate-related disputes, such as rent-adjustment lawsuits, construction arbitrations, and environmental disputes concerning land contamination, asbestos remediation measures, and more.

Our team of experienced attorneys strives to provide clients with the highest level of service, ensuring that their real estate and construction projects proceed smoothly and in compliance with all relevant laws and regulations.

Japan Market Entry Support

Our firm provides comprehensive legal support to international companies that have established, or are planning to establish, operations in Japan.

Our experienced team of attorneys offers tailored advice on a wide range of matters, including:

  • Assisting clients in selecting the most appropriate corporate form for their business needs and objectives.
  • Guiding clients through the process of incorporating their business in Japan, ensuring all necessary procedures are completed accurately and efficiently.
  • Preparing and reviewing internal rules and policies in both Japanese and English, to ensure compliance with local laws and regulations.
  • Drafting, reviewing, and advising on various types of contracts, including but not limited to, service agreements, supply agreements, and licensing agreements.
  • Addressing various day-to-day legal issues that may arise during the course of business operations, such as employment matters, regulatory compliance, dispute resolution, and more.

Our goal is to serve as a trusted legal partner for international companies doing business in Japan, helping them navigate the complexities of the local legal landscape and ensuring their operations run smoothly and effectively.


At Mori & Partners, we are actively seeking attorneys who possess a keen interest in bridging the gap between global business standards and localized legal expertise. Here are some of the reasons you should consider joining our team:

  • Global Clientele: Our client composition is weighted towards international companies. In fact, as of August 2023, the ratio of our Japanese to non-Japanese clients stands approximately at 3:7. If you have the capability to provide precise legal advice in English, taking into account differences in legal systems and business norms, we welcome you to our team. For those eager to develop this capability, we will share our know-how and ensure your growth.
  • Cutting-Edge Focus: Our firm consistently provides legal advice in pioneering sectors such as IT, gaming, and eSports. If you have a passion for staying ahead of the curve in these advanced areas, Mori & Partners is the right place for you.
  • Diverse Practice Areas: Our legal practice spans from M&As and general corporate governance to litigation and international arbitration. Assignments are tailored based on individual strengths, aspirations, and unique attributes. We firmly believe in matching our attorneys with fields that resonate with their personal strengths.
  • Flexible Working Environment: Whether you prefer to work from our office or remotely, we provide the flexibility you need. We do not mandate a fixed frequency of attendance, ensuring you maintain a work-life balance that suits you best.

If you are interested, please send your CV to the following e-mail address. We look forward to welcoming you to Mori & Partners.
e-mail : recruit@mps-legal.com










    Please enter leaving out the hyphen[-]. e.g.1060032



    Please see and agree to our Privacy Policy, then check the box below.

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.