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1 Jan 2026
Published on:
20 Nov 2025
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Version applicable as from
20 Nov 2025
Published on:
20 Nov 2025
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RO: Electronic filing (with effect since 27 March 2024)
Version applicable as from
1 Jan 2025
Published on:
19 Sep 2025
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Version applicable as from
8 Aug 2024
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8 Aug 2024
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6 Aug 2024
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6 Aug 2024
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Version applicable as from
25 Apr 2024
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28 Jun 2024
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1 Jan 2024
Published on:
1 Dec 2023
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15 Sep 2023
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15 Sep 2023
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From now on, you will find here a summary of changes to each new version of the PCT Applicant's Guide, as well as the detailed list of these changes. Moreover, you can now easily access the historical versions of the Guide.
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