Sonoda Kobayashi - An intellectual property law firm based in Tokyo, handling patents, trademarks, utility models and designs. Ryuka IP Law Firm - Handles all intellectual property matters, such as patents, trademark, utility models and designs. INOUE Patent Office - Offering services for patent, design and trademark protection in Japan. Kudo and Associates - Prosecution of patents, utility models, designs and trademarks, along with trials, litigation, infringement, licensing, domain names and copyrights. Yano International Patent Firm - Offering services for patents, trademarks, industrial designs and copyrights. Shusaku Yamamoto - Offering services for patents and trademarks in Japan. 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. Osamu AOKI 's personal website - Information of Japanese IP system. Yoshikawa International Patent Office - An intellectual property law firm specializing in patents, utility models, trademarks and designs. Welty, Shimeall, Ito & Associates - Tokyo law firm offering patent services. Office Matsunaga - Japanese patent attorneys. Tsubaki patent law firm - IP services in Japan for foreign clients. Sugimura International Patent and Trademark Attorneys - Tokyo based intellectual property firm. Sato & Associates - Intellectual property firm in Tokyo Bay area offering full IP services in patents, design patents, trademarks, copyrights, contracts, and related matters. Orb International Patent Law Firm - Located in Tokyo and focusing on patent applications for computer related inventions, data-processing and communication systems.