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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.

Our clients come from all over the world.

Our experience in patent transactions in Asia, including complex, cross-border negotiations, is unrivaled. We bridge language and cultural barriers to bring these deals to a successful conclusion.

Learn about our selling, buying, and licensing transactions

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Our clients

Our clients are mainly large corporations.

They face both strong competition and complex intellectual property rights relationships. We understand and work within the constraints of their competitive and patent environments to craft win-win patent transactions.

Read about our clients

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Technical fields of interest

We work in the high-tech, medical equipment, and materials science industries.

In the high-tech industries—semiconductors, electronics, IT, optics, fixed and wireless communications—we focus on larger portfolios of 10 to 200 patent families.

In the medical equipment and materials science industries, we sell and license both large and small portfolios.

Read about our fields of interest

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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.

Read more about us


Ans. We specialize in high-tech industries - semiconductors, electronics, IT, optics, fixed and wireless communications, and in the medical device industry. We focus on larger portfolios of 10 to 200 patent families.
Ans. We offer a highly customized service that maximizes to meet each client's needs. Patent infringement analysis, marketing materials, and the counterparties we approach are all customized to fit the project. We contact each counterparty individually and engage them in a confidential business discussion about the value of the transaction to them. Unlike other brokers, we never list patents on a web site in the hope that someone sees them and we never do spam-like mail blasts to hundreds of companies: those activities just reduce the perceived value of the patents.
Ans. P. J. Parker & Co. is a specialist patent broker: we help our clients sell, buy, and license patents.
Ans. P. J. Parker & Co. has been brokering patents since 2006 and has sold and licensed more than 3000 patents.
Ans. P. J. Parker & Co. works globally. We work in English, Japanese, and Chinese, allowing us to do business with leading technology companies througout the world.
Ans. We only charge a success-based commission. After we succeed in gaining revenues for our clients, the client pays us a share of the revenue. Until that time, we do not charge anything. And we cover all our own expenses.
Ans. There is no up-front or retainer fee. We only charge a success-based commission: after the patent owner receives payment for a patent sale or license, we receive a share of revenue.
Ans. Our company is a specialist patent broker. We help clients buy, sell, and license patents. To apply for and obtain patents for your invention, please contact a patent attorney or patent agent.
Ans. As part of our brokering service, we do prepare patent valuations to support price negotiations. But we do not prepare valuations as a stand-alone service.
Ans. The best way to get started is to send us your patent numbers. We will evaluate the patents. If the patents have potential monetary value, we will schedule a call with you to discuss the portfolio. This service is free and without obligation. Then you can decide how you would like to proceed.