FI Revision Information

FI scheme is revised twice a year in correspondence to the progression of technology. When FI scheme is revised, documents which were already classified with old FI entries are reclassified accordingly. There are cases where reclassification work requires a few years. It is necessary to use both of old and new FI entries for searching while reclassification work is not completed.

To find FI new entries, deleted entries or changed entries, see below.

To find technical fields where FI reclassification is ongoing or planned (PDF:42KB)

[Last updated 28 April 2022]

Patent Classification Policy Planning Section

Administrative Affairs Division

Japan Patent Office

Fax:+81-3-3580-8122

E-mail：PA0L10@jpo.go.jp

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