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The patent EP3661471 was granted to Kimberly Clark Worldwide on Nov 29, 2023. The application was filed on Jul 31, 2017 under application number EP17920020A. 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 |
|---|---|---|---|
| PAUL HARTMANN | Aug 29, 2024 | DREISS PATENTANWALTE PARTG MBB | ADMISSIBLE |
| THE PROCTER & GAMBLE | Aug 29, 2024 | ELKINGTON AND FIFE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2013255864 |
| DESCRIPTION | US2015173957 |
| INTERNATIONAL-SEARCH-REPORT | KR20160132847 |
| INTERNATIONAL-SEARCH-REPORT | US2004108043 |
| INTERNATIONAL-SEARCH-REPORT | US2005148965 |
| INTERNATIONAL-SEARCH-REPORT | US2006142728 |
| INTERNATIONAL-SEARCH-REPORT | US2017079852 |
| OPPOSITION | EP2533741 |
| OPPOSITION | EP2849695 |
| OPPOSITION | US2004068246 |
| OPPOSITION | US2005176867 |
| OPPOSITION | US2006142728 |
| OPPOSITION | US2008081858 |
| OPPOSITION | US2013255861 |
| OPPOSITION | US2013255862 |
| OPPOSITION | US2013255864 |
| OPPOSITION | US2015173957 |
| OPPOSITION | US2017079852 |
| OPPOSITION | US4526577 |
| OPPOSITION | US6610161 |
| OPPOSITION | WO2006071345 |
| SEARCH | US2013255864 |
| SEARCH | US2015173957 |
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 12, 2023
Nov 3, 2023
Decision to grant a European patent
Search/Exam
Oct 25, 2023
Oct 20, 2023
(Electronic) Receipt
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Oct 20, 2023
Filing of the translations of the claims
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Oct 20, 2023
French translation of claims
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Oct 20, 2023
German translation of the claims
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Oct 20, 2023
Letter accompanying subsequently filed items
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Jun 15, 2023
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Intention to grant (signatures)
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Jun 15, 2023
Text intended for grant (clean copy)
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Jun 15, 2023
May 31, 2023
Examination started
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Oct 18, 2021
(Electronic) Receipt
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Oct 18, 2021
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Amended claims with annotations
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Oct 18, 2021
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Amended description with annotations
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Oct 18, 2021
Amendments received before examination
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Oct 18, 2021
Letter accompanying subsequently filed items
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Apr 6, 2021
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European search opinion
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Mar 16, 2021
Information on Search Strategy
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Mar 16, 2021
Supplementary European search report
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Mar 4, 2021
Search started
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May 13, 2020
Mar 10, 2020
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Communication to designated inventor
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Mar 6, 2020
Communication to designated inventor
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Mar 6, 2020
Communication to designated inventor
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Feb 21, 2020
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(Electronic) Receipt
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Feb 19, 2020
Letter accompanying subsequently filed items
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Feb 19, 2020
Submission concerning representation
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Feb 17, 2020
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Feb 10, 2020
(Electronic) Receipt
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Feb 10, 2020
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Amended claims with annotations
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Feb 10, 2020
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Amended description with annotations
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Feb 10, 2020
Request for entry into the European phase
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Feb 10, 2020
Dec 13, 2019
Information on entry into European phase
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Feb 7, 2019
Copy of the international search report
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Feb 7, 2019
Published international application - A1
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