Welcome to Keisen Associates!

Keisen means "spring of blessings" in Japanese. We, Keisen Associates, aim to be a wellspring of legal services for all matters of Japanese intellectual property law.
Keisen Associates (formerly Omori & Yaguchi) is a Tokyo-based Japanese intellectual property law firm with an office in Philadelphia, Pennsylvania. We offer a broad range of Japanese and international legal support in patent, design, and trademark law. Our services include including prior art searches, in-house technical translations, international licensing, and legal consultation for business development and technology transfer in Japan. Our highly skilled attorneys and patent agents are supported by a team of technical advisers, translators, and administrative staff who are fluent in English. We are delighted to provide our clients with seamless, efficient, and cost-effective service that flows into all areas of intellectual property protection in Japan.

Japan’s IP News

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Following “PPAP” Confusion, JPO to Reassure Status of Trademark Applications Whose Acceptances Are Delayed by Defective Prior Applications

The JPO is making its procedures for examining trademark applications that have been preceded by defectively filed applications more transparent after some confusion that caught up the media in Japan. Defective (often, with official fees unpaid) applications frequently are attempts…
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Government Policy, IP News, Trademark Filing Requirements, Trademarks, What's New

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Asian Universities Ranked for Technology, Innovation

Reuters has published its ranking of the 2017 Asia Pacific’s Most Innovative Universities listing 75 schools for technology and intellectual property. The ranking placed 19 Japanese universities, including Tokyo University, Tohoku University, Kyoto University, and Osaka University, but South Korean…
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IP News, News, What's New

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Foreign Statements Weighed for Estoppel by Japan’s IP High Court

In a possibly consequential decision, the IP High Court overturned the Tokyo District Court’s infringement case decision against Debiopharm International S.A., judging that plaintiff Nichi-Iko’s patent No. 4430229 was not infringed. What was important about the decision was that the…
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Government Policy, IP High Court, IP News, Litigation, Patent Infringement, What's New

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JASRAC Faces Criticism for New Copyright Claims Against Music Schools

The Japanese Society for Rights of Authors, Composers and Publishers (JASRAC) is known for being strict, even (some would say) overbearing with those who perform music that is covered by their copyrighting policies. JASRAC recently announced plans to charge 2.5%…
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IP News, Litigation, News, What's New

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JPO’s Updated Extension Guidelines Provides Second-Chance, Post-Deadline Extension

Missed the first deadline for an Office Action response? Since the Revision to Japanese Patent Law effective from April 2016, the JPO has modified rules for extending the deadline for responding to Pre-Appeal Office Actions*, both minor and major. Of…
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Government Policy, Grace Period, IP News, Office Actions

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Proper Formatting for Translations and Content Submitted to the JPO

Q. I have ready a Japanese translation for my application; can I have Keisen submit the translation as it is? A. In short, No. Generally speaking, a translation provided by an applicant cannot be filed as it is in Japan…
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Filing Translation, Government Policy, How much does it cost?, Language Translation

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JPO Expands Patent Prosecution Highway (PPH) Connections with South America

The Japan Patent Office (JPO) continues to expand its Patent Prosecution Highway (PPH) network with pilot programs initiated with the National Institutes of Industrial Property (INPI) of Brazil and Argentina, respectively, from April 1, 2017. The JPO plans to start…
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Accelerated examination, Government Policy, IP News, Request for Examination, What's New

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