Applicants from China filed by far the highest number of PCT applications in 2025.
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Note: A Patent Cooperation Treaty (PCT) application is an international patent filing administered by the World Intellectual Property Organization (WIPO) that lets you seek patent protection in 159 Contracting States through a single unified submission.
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About 275,900 international patent applications (PCT applications) were filed via WIPO’s Patent Cooperation Treaty (PCT) in 2025 .
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Information source:
https://www.wipo.int/web-publications/executive-summary-patent-cooperation-treaty-yearly-review-2026-the-international-patent-system/en/patent-cooperation-treaty-yearly-review-2026-executive-summary.html

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