about
About Us
Professionals in
Dispute Resolution
Over the past decade, technology and business have changed dramatically. The legal profession has likewise undergone a major transformation, driven by greater specialization and the rise of legal technology.
Even so, we believe that the essence of a lawyer’s role lies in resolving disputes. As conflicts grow more complex in response to societal change, we are committed to being the experts who stand alongside our clients and guide them toward solutions.
Our Principles for
Pursuing the Best Outcome
At MASS, we have handled disputes across a wide range of fields — including inter-company contracts, intellectual property, construction, real estate, and labor matters.
We also have an extensive track record in business restructuring. By leveraging litigation procedures and preservation measures at precisely the right moment, we relentlessly pursue the best possible outcome for every client.
“Through dispute resolution, we protect and advance our clients’ interests.” This philosophy guides everything we do, every day.
At the Forefront of Commercial Dispute Resolution
With commercial dispute resolution at the core of our practice, MASS Partners delivers the level of expertise in IP litigation and business restructuring that has traditionally been available only at major firms — but as a boutique practice.
No matter how difficult the case, we see every case through to the very end. That is the essence of our firm.
Why MASS Partners?
MASS Partners is a boutique firm founded in 2019 by four founding partners, specializing exclusively in commercial dispute resolution.
Cases that major firms decline due to conflicts of interest or profitability concerns, matters where the opposing party is represented by a large firm — the more difficult the situation a client faces, the more our firm is sought out.
We believe this is because we are recognized as a firm that fights to the very end with an unwavering commitment to results.
- Relentless Dedication
- We think deeply until we grasp the very core of the matter. That accumulated effort opens the path to resolution.
- Partner-Led Service
- A partner is centrally involved in every case — providing consistent, hands-on engagement from intake through resolution.
- Specialized Expertise
- We deliver major-firmlevel expertise in IP and business restructuring through the agility of a boutique practice.
Firm Overview
- Firm Name
- MASS Partners Law Firm
- Address
- Garo Building 5F, 3-1-4 Nihonbashi, Chuo-ku, Tokyo
- Established
- February 1, 2019
- Counsel
- SHIRASAKA Patent Attorney Corporation
- Contact
- TEL: 03-6868-3534 (Domestic) / +81-3-6868-3534 (International)
FAX: 03-6868-4991
アクセス
・3-minute walk from Exit 16 of JR Tokyo Station; 5-minute walk from Exit 21
・1-minute walk from Exit B3 of Nihonbashi Station (Tokyo Metro Ginza Line, Tozai Line; Toei Asakusa Line)