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JapanPublic sector2018 – ongoing

Japan Patent Office

AI classification of foreign patent documents

Japan Patent Office used AI to make foreign patent documents searchable under Japanese classifications

WorkingCompany's own claimOfficial ↗

Problem

Patent examiners needed to search Japanese and foreign documents together. Japan's own classification systems provided detailed search categories that also needed to cover foreign material.

Approach

The office used AI to assign FI and F-term classifications automatically to foreign patent documents. These shared classifications allowed examiners to search domestic and foreign documents together.

Results

No published figures

Takeaway

The operational benefit came from applying a common search structure across document collections. The office did not quantify time savings or classification accuracy.

Categories

Innovation type
Process innovation
Evidence
Company's own claim

Sources

  1. JPO Status Report 2022
    Japan Patent Office2022Company publication

Source summaries

[1]Japan Patent Office2022

The office confirmed that AI classification was already used in patent examination. It explained that automatically assigning FI and F-term classifications enabled combined searches of Japanese and foreign patent documents.

Full details are in the original sources.

Added 1 Nov 2026 · Updated 1 Nov 2026
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