The weekly litigation news digest is live. Subscribe now
The patent EP3827798 was granted to Ontex on Jun 22, 2022. The application was filed on Mar 21, 2019 under application number EP20213288A. 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 | Mar 22, 2023 | ARNOLD & SIEDSMA | ADMISSIBLE |
| KIMBERLY CLARK WORLDWIDE | Mar 22, 2023 | DEHNS | 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 |
| EXAMINATION | EP3315106 |
| OPPOSITION | CN102834080 |
| OPPOSITION | EP0539703 |
| OPPOSITION | EP0670154 |
| OPPOSITION | EP3342386 |
| OPPOSITION | EP3403630 |
| OPPOSITION | JP2013052161 |
| OPPOSITION | US2012209233 |
| OPPOSITION | US2016074243 |
| OPPOSITION | US2016206482 |
| OPPOSITION | US2017079858 |
| OPPOSITION | US2019000687 |
| OPPOSITION | US5433715 |
| OPPOSITION | WO0066058 |
| OPPOSITION | WO2012052172 |
| OPPOSITION | WO2015084221 |
| OPPOSITION | WO2018122234 |
| 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.
Date
Description
Get instant alerts for new documents
Dec 15, 2025
Dec 15, 2025
Dec 15, 2025
Dec 5, 2025
(Electronic) Receipt
Appeal
Dec 5, 2025
Notice of appeal
Appeal
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Means of redress
Search/Exam
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 31, 2025
Oct 30, 2025
Oct 7, 2025
Oct 3, 2025
Oct 3, 2025
Oct 3, 2025
Oct 3, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Sep 24, 2025
Sep 24, 2025
Sep 24, 2025
Sep 23, 2025
Sep 23, 2025
Sep 23, 2025
Sep 23, 2025
Sep 23, 2025
Sep 22, 2025
Sep 22, 2025
Sep 22, 2025
Sep 17, 2025
Sep 17, 2025
Sep 17, 2025
Sep 15, 2025
Sep 15, 2025
Sep 10, 2025
Sep 10, 2025
Sep 10, 2025
Aug 14, 2025
Aug 14, 2025
Aug 12, 2025
Aug 12, 2025
Aug 12, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Jul 23, 2025
Jul 23, 2025
Jul 17, 2025
Jul 17, 2025
Jul 17, 2025
Jul 17, 2025
Jul 17, 2025
Jul 17, 2025
Jul 17, 2025
Jul 14, 2025
Jul 14, 2025
Jul 14, 2025
Jul 11, 2025
Jul 11, 2025
Jul 8, 2025
Jul 8, 2025
Jul 8, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jun 27, 2025
Jun 27, 2025
Jun 27, 2025
Jun 23, 2025
Jun 23, 2025
Jun 23, 2025
Jun 23, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 14, 2025
May 14, 2025
May 9, 2025
May 9, 2025
May 9, 2025
Jan 27, 2025
Jan 27, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Dec 6, 2024
Dec 6, 2024
Dec 2, 2024
Dec 2, 2024
Dec 2, 2024
Sep 13, 2024
Sep 13, 2024
Sep 13, 2024
Sep 11, 2024
Sep 11, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Aug 5, 2024
Aug 5, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
Apr 16, 2024
Apr 16, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Aug 18, 2023
Aug 18, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Jul 31, 2023
Jul 31, 2023
Jul 31, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Mar 28, 2023
Mar 27, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Jul 5, 2022
May 27, 2022
Decision to grant a European patent
Search/Exam
May 13, 2022
(Electronic) Receipt
Search/Exam
May 13, 2022
Filing of the translations of the claims
Search/Exam
May 13, 2022
French translation of claims
Search/Exam
May 13, 2022
German translation of the claims
Search/Exam
Apr 5, 2022
Apr 5, 2022
Apr 5, 2022
Intention to grant (signatures)
Search/Exam
Apr 5, 2022
Text intended for grant (clean copy)
Search/Exam
Apr 5, 2022
Feb 22, 2022
(Electronic) Receipt
Search/Exam
Feb 22, 2022
Amended claims with annotations
Search/Exam
Feb 22, 2022
Claims
Search/Exam
Feb 22, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 22, 2022
Feb 18, 2022
Feb 18, 2022
Feb 18, 2022
Intention to grant (signatures)
Search/Exam
Feb 18, 2022
Text intended for grant (clean copy)
Search/Exam
Feb 18, 2022
Oct 25, 2021
Document concerning representation
Search/Exam
Oct 25, 2021
Document concerning representation
Search/Exam
Sep 28, 2021
(Electronic) Receipt
Search/Exam
Sep 28, 2021
Amended claims with annotations
Search/Exam
Sep 28, 2021
Amended description with annotations
Search/Exam
Sep 28, 2021
Claims
Search/Exam
Sep 28, 2021
Description
Search/Exam
Sep 28, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 28, 2021
Sep 2, 2021
Annex to the communication
Search/Exam
Sep 2, 2021
Communication from the Examining Division
Search/Exam
Aug 10, 2021
(Electronic) Receipt
Search/Exam
Aug 10, 2021
Amended claims with annotations
Search/Exam
Aug 10, 2021
Amended description with annotations
Search/Exam
Aug 10, 2021
Claims
Search/Exam
Aug 10, 2021
Description
Search/Exam
Aug 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 10, 2021
Jul 16, 2021
(Electronic) Receipt
Search/Exam
Jul 16, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 16, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Jul 6, 2021
Annex to the communication
Search/Exam
Jul 6, 2021
Communication from the Examining Division
Search/Exam
Jun 28, 2021
Examination started
Search/Exam
Jun 8, 2021
May 10, 2021
(Electronic) Receipt
Search/Exam
May 10, 2021
(Electronic) Receipt
Search/Exam
May 10, 2021
May 10, 2021
Amended claims with annotations
Search/Exam
May 10, 2021
May 10, 2021
Amended description with annotations
Search/Exam
May 10, 2021
Amendments received before examination
Search/Exam
May 10, 2021
Letter accompanying subsequently filed items
Search/Exam
May 10, 2021
Letter accompanying subsequently filed items
Search/Exam
May 10, 2021
Written request for examination
Search/Exam
May 7, 2021
Refund of fees
Search/Exam
May 6, 2021
Notification of forthcoming publication
Search/Exam
May 3, 2021
May 3, 2021
European search opinion
Search/Exam
May 3, 2021
European search report
Search/Exam
May 3, 2021
Information on Search Strategy
Search/Exam
Apr 19, 2021
Search started
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Dec 11, 2020
Abstract
Search/Exam
Dec 11, 2020
Dec 11, 2020
Claims
Search/Exam
Dec 11, 2020
Description
Search/Exam
Dec 11, 2020
Designation of inventor
Search/Exam
Dec 11, 2020
Drawings
Search/Exam
Dec 11, 2020
Request for grant of a European patent
Search/Exam