Orb International Patent Law Firm
- The firm is located in Tokyo, Japan, handles patent application of softwares and computer-related invention.
- http://www.orbpat.jp/index-en.html

Office Matsunaga
- Japanese patent attorneys.
- http://www.matsunaga.com/

Welty, Shimeall, Ito & Associates
- Tokyo law firm offering patent services.
- http://www.patentlore.com/welty/

Yoshikawa International Patent Office
- An intellectual property law firm specializing in patents, utility models, trademarks and designs.
- http://www7a.biglobe.ne.jp/%7eyipo/

Osamu AOKI 's personal website
- Information of Japanese IP system.
- http://www.indigobullet.com/en/index-en.html

ALFORD International Patent & Trademark Office
- Intellectual property law firm in Tokyo.
- http://www.alford-patent.com

Primeworks IP Attorneys
- An intellectual property law firm based in Tokyo, handling patents, trademarks, designs and litigations.
- http://www.primeworks-ip.com/

Aarwer
- Offers professional intellectual property services and assists clients in strategic development and management of intellectual property portfolios with consideration of marketing and business strategy.
- http://www.tateishi-ip.com/index.files/services_english.htm

Sato & Associates
- Intellectual property firm in Tokyo Bay area offering full IP services in patents, design patents, trademarks, copyrights, contracts, and related matters.
- http://www.ariapat.com

Shusaku Yamamoto
- Offering services for patents and trademarks in Japan.
- http://www.shupat.gr.jp

Yano International Patent Firm
- Offering services for patents, trademarks, industrial designs and copyrights.
- http://www.patent-yano.gr.jp

Kudo and Associates
- Prosecution of patents, utility models, designs and trademarks, along with trials, litigation, infringement, licensing, domain names and copyrights.
- http://www.kudopatent.com

INOUE Patent Office
- Offering services for patent, design and trademark protection in Japan.
- http://www.ne.jp/asahi/office/inopat/

Omori and Yaguchi
- Intellectual property law firm with offices in Tokyo, and in Philadelpia, Pennsylvania, offering services for patent, design and trademark matters.
- http://www.omoriyaguchi.com/

Ryuka IP Law Firm
- Handles all intellectual property matters, such as patents, trademark, utility models and designs.
- http://www.ryuka.com/en/

Sonoda Kobayashi
- An intellectual property law firm based in Tokyo, handling patents, trademarks, utility models and designs.
- http://www.patents.jp

OTA & Associates
- Intellectual property law firm based in Tokyo.
- http://www.otapatent.com/english/