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Good practice Imported

CNIPA's Patent Intelligent Examination and Search System — China's Nationwide AI Roll-out With a Built-in Guardrail

China · Beijing · See the China profile · See the Beijing profile

Evidence: Descriptive / self-reported Top 67% 53/100 · Ask Evidence Copilot about this practice

China's IP office built a national AI system for patent search, translation and document comparison, live since January 2023 and expanded in 2025 with large-model search and legal-assistant tools — while officially barring examiners from using AI output as an examination opinion.

CNIPA's Patent Intelligent Examination and Search System — China's Nationwide AI Roll-out With a Built-in Guardrail

Details

Maturity
Established
Promoter
China National Intellectual Property Administration (CNIPA)
Period
2022-2025
Keywords
intellectual property, patent examination, government digitalisation, AI-assisted search

Context

China's National Intellectual Property Administration (CNIPA) began building a patent intelligent examination and search system in 2022, officially launched in January 2023. The system provides online translation, graphic recognition and intelligent document comparison, aimed at reducing examiners' repetitive work. By July 2025, CNIPA had added a large-model search tool, an AI academic assistant and an AI legal assistant offering natural-language queries over case law. CNIPA has explicitly stated that AI-generated results 'cannot be directly used as examination opinions' — examiners must reach conclusions independently under the Patent Law.

Results

At a June 2025 press conference, CNIPA officials cited a 'significant improvement in the reference detection rate' from internal testing, without releasing the underlying percentage. No independently verified efficiency or accuracy figure has been published; the claim relies on CNIPA's own statements at official briefings.

Implementation
Indicative cost
High (€500k–€5M) — No budget figure is published; classified as high cost given a national in-house AI ecosystem built and progressively expanded across an entire patent office over several years.
Time to results
Medium (1–3 years) — Built from 2022, launched nationally in January 2023, and expanded with further AI tools through July 2025 (about three years).
Staffing & skills
CNIPA patent examiners (retain final decision authority under the Patent Law)

Conditions for success

  • Explicit human-oversight rule: AI output cannot be used directly as an examination opinion
  • Iterative expansion of the tool suite (translation, document comparison, large-model search, legal assistant) reaffirmed at successive official press conferences

Common failure modes

  • No independently verified efficiency or accuracy figure has been published; the reference-detection-rate improvement claim relies solely on CNIPA's own internal testing

Commonly funded by

National / regional programmes

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Data sources

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