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Patent Index 2020

Chapter VI – The state of the art at the search stage

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PCT-EPO Guidelines
Table of Contents
PCT Part B
Chapter VI
5. Date of reference for documents cited in the search report; filing and priority date

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5. Date of reference for documents cited in the search report; filing and priority date

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5. Date of reference for documents cited in the search report; filing and priority date

5.1 Verification of claimed priority date(s)

5.2 Intermediate documents

5.3 Doubts as to the validity of the priority claim; extension of the search

5.4 Documents published after the filing date

5.5 Non‑prejudicial disclosures

5.6 Matters of doubt in the state of the art

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