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The patent EP3711730 was granted to Ontex on Dec 16, 2020. The application was filed on Dec 20, 2019 under application number EP19218948A. 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 |
|---|---|---|---|
| DRYLOCK | Sep 16, 2021 | ARNOLD & SIEDSMA | ADMISSIBLE |
| ESSITY HYGIENE AND HEALTH AKTIEBOLAG | Sep 13, 2021 | ESSITY HYGIENE AND HEALTH | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1077052 |
| DESCRIPTION | EP1078617 |
| DESCRIPTION | EP1088536 |
| DESCRIPTION | EP1267775 |
| DESCRIPTION | EP1349524 |
| DESCRIPTION | EP1959903 |
| DESCRIPTION | EP2211808 |
| DESCRIPTION | EP3190216 |
| DESCRIPTION | EP3342386 |
| DESCRIPTION | US2006184150 |
| DESCRIPTION | US2015088084 |
| DESCRIPTION | US5756039 |
| DESCRIPTION | US6503233 |
| OPPOSITION | CN106999317 |
| OPPOSITION | EP0539703 |
| OPPOSITION | EP3342386 |
| OPPOSITION | EP3711729 |
| OPPOSITION | US2016074243 |
| OPPOSITION | US2018161217 |
| OPPOSITION | US5433715 |
| OPPOSITION | US5486166 |
| OPPOSITION | US5520673 |
| OPPOSITION | WO2013056978 |
| OPPOSITION | WO2015084221 |
| OPPOSITION | WO2016114947 |
| OTHER | EP3315106 |
| OTHER | US2016074243 |
| SEARCH | EP3315106 |
| SEARCH | US2016074243 |
| SEARCH | US2019000687 |
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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Jan 13, 2026
(Electronic) Receipt
Appeal
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Reply to appeal
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Refund of fees
Appeal
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Notice of appeal
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Decision to grant a European patent
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Nov 3, 2020
(Electronic) Receipt
Search/Exam
Nov 3, 2020
Letter accompanying subsequently filed items
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Nov 3, 2020
Oct 30, 2020
(Electronic) Receipt
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Oct 30, 2020
Filing of the translations of the claims
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Oct 30, 2020
French translation of claims
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Oct 30, 2020
German translation of the claims
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Oct 27, 2020
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Observations by third parties
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Oct 21, 2020
Patent document filed by a Third party
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Oct 21, 2020
Patent document filed by a Third party
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Oct 20, 2020
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Intention to grant (signatures)
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Oct 20, 2020
Text intended for grant (clean copy)
Search/Exam
Oct 20, 2020
Sep 28, 2020
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Examination started
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Sep 8, 2020
Aug 31, 2020
(Electronic) Receipt
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Aug 31, 2020
Annexes in respect of a client data request
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Aug 31, 2020
Letter accompanying subsequently filed items
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Aug 31, 2020
Aug 26, 2020
Notification of forthcoming publication
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Jul 17, 2020
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Amended claims with annotations
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Amended description with annotations
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Amendments received before examination
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Jul 17, 2020
Letter accompanying subsequently filed items
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Jul 17, 2020
Refund of fees
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Jul 10, 2020
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European search opinion
Search/Exam
Jul 10, 2020
European search report
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Jul 10, 2020
Information on Search Strategy
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Jul 7, 2020
Priority search results copy provided by EPO
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Jul 1, 2020
Search started
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Mar 11, 2020
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Letter which had not been notified
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Feb 26, 2020
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Dec 25, 2019
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Abstract
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Claims
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Dec 20, 2019
Description
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Dec 20, 2019
Designation of inventor
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Dec 20, 2019
Drawings
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Dec 20, 2019
Request for grant of a European patent
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