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The patent EP3251646 was granted to Daio Paper on Jan 13, 2021. The application was filed on Jan 29, 2016 under application number EP16743585A. 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 |
|---|---|---|---|
| MONDI | Oct 13, 2021 | ANDREJEWSKI HONKE PATENT UND RECHTSANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
| ESSITY HYGIENE AND HEALTH AKTIEBOLAG | Oct 13, 2021 | HOFFMANN EITLE | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2004532758 |
| INTERNATIONAL-SEARCH-REPORT | JP2008260131 |
| INTERNATIONAL-SEARCH-REPORT | JP2014520589 |
| OPPOSITION | EP0274752 |
| OPPOSITION | EP0685586 |
| OPPOSITION | EP1355604 |
| OPPOSITION | EP2064052 |
| OPPOSITION | EP2223796 |
| OPPOSITION | JP2008142341 |
| OPPOSITION | US2010112313 |
| OPPOSITION | US2012038088 |
| OPPOSITION | US4414045 |
| OPPOSITION | US4842596 |
| OPPOSITION | US5567501 |
| OPPOSITION | US5591298 |
| OPPOSITION | WO03000165 |
| OPPOSITION | WO2008026106 |
| OPPOSITION | WO2012036599 |
| OPPOSITION | WO2012036600 |
| OPPOSITION | WO2013002691 |
| OPPOSITION | WO2015168032 |
| OPPOSITION | WO9411189 |
| OPPOSITION | WO9614191 |
| SEARCH | WO2012036599 |
| SEARCH | WO2013002691 |
| SEARCH | WO2015168032 |
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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Description
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Dec 8, 2025
(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
Jan 3, 2024
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Letter accompanying subsequently filed items
Search/Exam
Jun 1, 2021
May 17, 2021
Letter accompanying subsequently filed items
Search/Exam
May 17, 2021
Jan 25, 2021
Dec 17, 2020
Decision to grant a European patent
Search/Exam
Dec 4, 2020
(Electronic) Receipt
Search/Exam
Dec 4, 2020
Filing of the translations of the claims
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Dec 4, 2020
French translation of claims
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Dec 4, 2020
German translation of the claims
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Dec 4, 2020
Letter accompanying subsequently filed items
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Jul 27, 2020
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Intention to grant (signatures)
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Jul 27, 2020
Text intended for grant (clean copy)
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Jul 27, 2020
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(Electronic) Receipt
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Mar 25, 2020
Amended description with annotations
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Mar 25, 2020
Description
Search/Exam
Mar 25, 2020
Letter accompanying subsequently filed items
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Mar 25, 2020
Jan 15, 2020
Annex to the communication
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Jan 15, 2020
Communication from the Examining Division
Search/Exam
Oct 21, 2019
(Electronic) Receipt
Search/Exam
Oct 21, 2019
Amended claims with annotations
Search/Exam
Oct 21, 2019
Annex
Search/Exam
Oct 21, 2019
Claims
Search/Exam
Oct 21, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 21, 2019
Jun 11, 2019
Annex to the communication
Search/Exam
Jun 11, 2019
Communication from the Examining Division
Search/Exam
Jun 4, 2019
Examination started
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Jan 16, 2019
(Electronic) Receipt
Search/Exam
Jan 16, 2019
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Amended claims with annotations
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Jan 16, 2019
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Jan 16, 2019
Letter accompanying subsequently filed items
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Jul 6, 2018
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European search opinion
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Jun 20, 2018
Information on Search Strategy
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Jun 20, 2018
Supplementary European search report
Search/Exam
May 28, 2018
Search started
Search/Exam
Nov 8, 2017
Notification of forthcoming publication
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Sep 6, 2017
Sep 4, 2017
Communication to designated inventor
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Aug 14, 2017
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Jul 31, 2017
(Electronic) Receipt
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Jul 31, 2017
Abstract
Search/Exam
Jul 31, 2017
Claims
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Jul 31, 2017
Description
Search/Exam
Jul 31, 2017
Drawings
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Jul 31, 2017
Request for entry into the European phase
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Jun 9, 2017
Information on entry into European phase
Search/Exam
Aug 24, 2016
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Aug 4, 2016
Copy of the international search report
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Aug 4, 2016
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International publication pamphlet
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