World-Leading Patent Broker
P. J. Parker & Co. is a patent broker headquartered in Tokyo, Japan. Since 2006, we have sold and licensed more than 3,000 patents for clients throughout the world. Our experience in patent transactions in Asia, including complex, cross-border negotiations, is unrivaled.
We aim to provide the world’s best patent brokering service, by meticulously analyzing patents and patent infringement, preparing insightful, persuasive marketing materials, and negotiating the best price for our clients.
Patent Transactions
About Us
We have been brokering patent transactions since 2006. We forge win-win transactions based on trust with both our clients and their counterparties.
We are proud that many of our clients and their counterparties have returned to us time and again for additional transactions.
We work on a success-fee only basis.
For Patent Sales, Purchases, and Licensing, Contact P. J. Parker Co., Ltd.
When it comes to selling, purchasing, or licensing patents, you can rely on P. J. Parker Co., Ltd. With over 20 years of experience and a global network of contacts, we are dedicated to maximizing the value of your patent portfolio. Whether you want to understand the value of your patents, find the optimal buyer, or explore licensing agreements, we are here to assist with all your patent sales and licensing inquiries.
Leveraging our case studies, patent assessments, and experience, we provide clear information on market trends, taxes, and fees related to patent transactions. As professionals in patent sales and brokerage, we are committed to helping you make the most of your valuable patents.


