Japanese Patent Attorneys | Allegro IP Law Firm

Aim to be the best Japanese IP firm for overseas clients.

Firm Overview

Allegro IP is a unique and exclusive boutique Japanese intellectual property law firm that carries out the missions of supporting overseas clients’ business in Japan with strong and valuable patent and trademark protection.

About Us

Allegro IP is a boutique IP law firm in Japan focusing on IP matters for overseas clients

IP Attorneys

18+ years of experienced IP attorneys handle cases before the Japan Patent Office


We have tried to offer as high quality and expedient IP services as possible from the start of our firm


Clients are always kept informed of any charges in a clear way and our service fees are competitive

Client Breakdown 2019

1 %
overseas Corp./univ.
1 %
overseas IP firm
1 %
Japanese Corp./univ.









We Will Help You Every Step Of The Way

Why global companies choose Allegro IP?

IP Specialization

Allegro IP is a boutique IP law firm in Japan. We specialize in Japanese patent and trademark filing and prosecution to support overseas clients.

Int'l Only

Firm’s system and strategy are streamlined to focus on IP matters in Japan for overseas clients. We are familiar with how to proceed with such cases.

Urgent Matter

We are always conscious of being highly responsive and we prepare and file documents before the Japan Patent Office within a few hours in urgent cases.

Email Contact

We communicate with clients mostly via email and sometimes skype. Please do not hesitate to contact us at any time without considering time differences.

Transparent Billing

We prepare and issue invoices promptly and we prepare estimates in advance for costly cases. We accept credit card payment through Paypal.


Only patent attorneys with 18+ years of experience are in charge of overseas clients’ cases. Unlike other firms, there are no associates/paralegals.

Inhouse Translation

Only patent attorneys are in charge of translation services so that the clients may proceed with later prosecution smoothly and seek strong IP protection.

Filing Confirmation

We report on each filing immediately together with official receipt and filed document so that clients enjoy our services without anxiety.

Backup Service

If our clients find any unsatisfactory issues with our services, we will be willing to work over the cases as they deem necessary at no additional cost.

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