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The patent EP3677422 was granted to Daio Paper on Nov 30, 2022. The application was filed on Aug 29, 2018 under application number EP18850368A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| ESSITY HYGIENE AND HEALTH | Aug 30, 2023 | HOFFMANN EITLE | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2017167503 |
| DESCRIPTION | JPH0628951 |
| DESCRIPTION | US8409404 |
| INTERNATIONAL-SEARCH-REPORT | JP2010234758 |
| INTERNATIONAL-SEARCH-REPORT | JPH09503030 |
| INTERNATIONAL-SEARCH-REPORT | JPS4833161 |
| INTERNATIONAL-SEARCH-REPORT | JPS6133628 |
| INTERNATIONAL-SEARCH-REPORT | US2012244320 |
| OPPOSITION | CN104138311 |
| OPPOSITION | EP0980750 |
| OPPOSITION | EP1908579 |
| OPPOSITION | EP1970193 |
| OPPOSITION | EP2048283 |
| OPPOSITION | JP2009000512 |
| OPPOSITION | JP2010173250 |
| OPPOSITION | JP2010234758 |
| OPPOSITION | JP2017063894 |
| OPPOSITION | US3694300 |
| OPPOSITION | US5840404 |
| OPPOSITION | US6395133 |
| OPPOSITION | WO2013046653 |
| OPPOSITION | WO2016030784 |
| SEARCH | JP2017063894 |
| SEARCH | US2012114908 |
| SEARCH | US5840404 |
| SEARCH | US6395133 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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Decision to grant a European patent
Search/Exam
Oct 20, 2022
(Electronic) Receipt
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Oct 20, 2022
Filing of the translations of the claims
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Oct 20, 2022
French translation of claims
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Oct 20, 2022
German translation of the claims
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Oct 20, 2022
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Aug 4, 2022
Text intended for grant (clean copy)
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Examination started
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(Electronic) Receipt
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May 21, 2021
Letter accompanying subsequently filed items
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May 21, 2021
Reply to Written Opinion prepared by the EPO
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European search opinion
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Apr 14, 2021
Information on Search Strategy
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Supplementary European search report
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Mar 31, 2021
Search started
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Sep 22, 2020
(Electronic) Receipt
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Sep 22, 2020
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Amended claims with annotations
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Sep 22, 2020
Amendments received before examination
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Sep 22, 2020
Letter accompanying subsequently filed items
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Jun 10, 2020
Notification of forthcoming publication
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Feb 24, 2020
Abstract
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Feb 24, 2020
Claims
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Feb 24, 2020
Description
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Feb 24, 2020
Drawings
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Feb 24, 2020
Request for entry into the European phase
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Jan 10, 2020
Information on entry into European phase
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Copy of the international search report
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International publication pamphlet
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