Team · PatentOS
08 / Founding team

Licensed patent attorneys and AI engineers, in one operating company.

PatentOS is built by IP Rich, a Tokyo IP firm with 105 million yen in capitalisation, by people who have lived inside the workflow it automates. Three of us are bar-admitted patent attorneys. Three are engineers who have shipped systems used by Netflix, Alibaba, and Google.

Founders and leadership

The people on the cap table and the people in the code.

Kusano Daigo

Founder and CEO, IP Rich

Kusano Daigo

Founder and CEO of IP Rich. Physics graduate, Sophia University. Former Fuji Xerox patent operations. Founded Patent Investment Inc. in 2016, growing it into IP Rich. Inventor on two granted patents (four pending) for SOS submersible drone systems, in active collaboration with a world-leading submersible technology firm. Produced Japan's first feature film with intellectual property as its central subject. Lectures on patent strategy at universities and IP certification programs. Built the manual workflow PatentOS now automates.

Günther Brunner

CTO, IP Rich

Günther Brunner

Principal Engineer at CyberAgent's CTO Office. Fifteen years building products across games, media, AI, and SaaS, wearing every hat: engineer, designer, business owner. Built OpenSTF, an open-source mobile testing platform adopted in production by Netflix, Alibaba, and Google (13,000+ GitHub stars). AI evangelist and frequent conference speaker. Certified Highly Skilled Professional by the Government of Japan. MEXT scholar.

Iwase Kanji

EVP and Patent Attorney

Iwase Kanji

EVP and Patent Attorney. Engineering, University of Tokyo. Sixteen years as a systems engineer across multiple industries before bar admission as a benrishi in 2016. Has drafted more than 300 patent specifications across software, electrical, mechanical, and telecommunications. Former IP Group Leader at Yayoi Inc. Founded IP Rich International Patent Office in 2024. Sets the precision bar inside the PatentOS platform.

Aoi Takanori

Patent Attorney

Aoi Takanori

Patent Attorney. National Defense Academy and Tokyo Institute of Technology (Ph.D. Engineering). R&D at Japan's Defense Equipment Agency. Cross-border patent registration and commercialization across Japan, US, and China offices, with a focus on information and communications. Management strategy consulting at Booz Allen Hamilton (now Strategy&). Independent IP practice since 2013, end-to-end from filing through commercialization. Leads JP-US-EP cross-jurisdiction work on PatentOS.

Kusakari Shunichi

Partner Patent Attorney

Kusakari Shunichi

Partner Patent Attorney. Legal Studies, Kanagawa University Graduate School. Civil service background before becoming a patent attorney. Operates an independent patent firm in close collaboration with attorneys, judicial scriveners, and labor and social security attorneys. Specializes in trademark law, with research bridging academic theory and front-line practice. Anchors PatentOS's relationship with reviewing attorneys outside the company and guarantees review quality for partner-firm engagements.

Ikeda Tomohiro

Business and Tech Advisor

Ikeda Tomohiro

Business and Tech Advisor. Serial entrepreneur with eight company foundings and four M&A exits. Advisor at Members Inc. (TSE Prime listed), COO at Top Runner Marketing, plus leadership roles across growth-capital firms. Deep experience deploying generative AI inside operating businesses. Runs the 56,000-subscriber YouTube channel "Remote Work Laboratory" on AI and remote tooling. Author of a published Japanese textbook on remote-team communication. Guides PatentOS go-to-market for corporate IP buyers and patent-firm partnerships.

The company

A Tokyo IP firm building an operating system.

IP Rich is not an AI startup that hired patent attorneys. It is a working patent firm that decided to build software for itself, and then realised the software was the product. The team is the customer, the developer, and the licensing partner in one.

¥105.4M

IP Rich capitalisation

300+

Patent specifications drafted

5y+

IP educational publishing

JP · US · EP

Patent law fluency on staff

Where we sit

Tokyo, with engineering and investor relations remote.

Headquarters and licensed attorney bench in Tokyo. Engineering distributed across Japan. Investor and partnership conversations handled from wherever the meeting is. We are honest about being a Tokyo company.

"We are the customers. We are the developers. The product has to work for both, or we will not let it ship."

Kusano Daigo · Founder, IP Rich

Get in touch

Three doors. Same building.

Corporate IP teams, patent firms, and investors all start with the same conversation. We route from there.