Comparative Study on Trial and Appeal Practices among JPO, CNIPA and KIPO

January 2025
Japan Patent Office
Trial and Appeal Department

The first Joint Experts Group of Trial and Appeal (JEGTA) was held in 2013 in order to promote cooperation, advance the exchange of information and analyses relating to the systems/practice, deepen their mutual understanding, etc. among the JPO, the CNIPA and the KIPO (the Three Offices) in the field of trials and appeals. The Three Offices have ever since conducted comparative studies on the trial and appeal systems/practice in each of the three countries so that users are able to have a deep understanding of their trial and appeal systems.

The JPO, the CNIPA and the KIPO have published a new report titled "Comparative Study on Requirements for Post Patent Grant Corrections (Amendments) and Purpose of the Requirements." The report is available on this website (See below).

It is the hope of the Three Offices that these reports will help you gain a better understanding of different views concerning the trial and appeal practice at the Three Offices.

Original Report in English	Japanese Translation (Provisional)
"Comparative Study on Requirements for Post Patent Grant Corrections (Amendments) and Purpose of the Requirements" (published in 2025) (PDF:314KB)	"Comparative Study on Requirements for Post Patent Grant Corrections (Amendments) and Purpose of the Requirements" (published in 2025) (PDF:330KB)
"Comparative Study on Fast-track Proceedings" (published in 2023) (PDF:458KB)	"Comparative Study on Fast-track Proceedings" (published in 2023) (PDF:619KB)
"Comparative Study on Oral Proceedings" (published in 2021) (PDF:930KB)	"Comparative Study on Oral Proceedings" (published in 2021) (PDF:1,173KB)
"A Comparative Study on Administrative Systems Including Consideration about the Scope of Patent Right for Patent Dispute Resolution" (published in 2017) (PDF:1,048KB)	"A Comparative Study on Administrative Systems Including Consideration about the Scope of Patent Right for Patent Dispute Resolution" (published in 2017) (PDF:1,242KB)
"Comparative Study on the Patent Trial for Invalidation" (published in 2016) (PDF:1,482KB)	"Comparative Study on the Patent Trial for Invalidation" (published in 2016) (PDF:2,580KB)
"A Comparative Study on Appeal against Decision of Rejection" (published in 2014) (PDF:966KB)	"A Comparative Study on Appeal against Decision of Rejection" (published in 2014) (PDF:1,212KB)

[Last updated 15 January 2025]

Inquiry :Trial and Appeal Division, Trial and Appeal Department, Japan Patent Office

Tel:+81-3-3581-1101 (ext. 3613)

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Address:3-4-3 Kasumigaseki, Chiyoda-ku Tokyo 100-8915, Japan