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The patent EP3941593 was granted to Unilever on Oct 12, 2022. The application was originally filed on Mar 12, 2020 under application number EP20708516A. The patent is currently recorded with a legal status of "Opposition Rejected".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0545556 |
| DESCRIPTION | FR2978034 |
| DESCRIPTION | WO0152805 |
| DESCRIPTION | WO2013013902 |
| DESCRIPTION | WO2013013903 |
| INTERNATIONAL-SEARCH-REPORT | FR2978033 |
| INTERNATIONAL-SEARCH-REPORT | FR2978034 |
| INTERNATIONAL-SEARCH-REPORT | US2003026768 |
| INTERNATIONAL-SEARCH-REPORT | US5895641 |
| INTERNATIONAL-SEARCH-REPORT | US6221340 |
| INTERNATIONAL-SEARCH-REPORT | WO2013013902 |
| INTERNATIONAL-SEARCH-REPORT | WO2013013903 |
| INTERNATIONAL-SEARCH-REPORT | WO2016105430 |
| INTERNATIONAL-SEARCH-REPORT | WO2017117301 |
| INTERNATIONAL-SEARCH-REPORT | WO2019072831 |
| INTERNATIONAL-SEARCH-REPORT | WO9810736 |
| OPPOSITION | EP3941594 |
| OPPOSITION | US2017189454 |
| OPPOSITION | US6015547 |
| OPPOSITION | WO2013096351 |
| OPPOSITION | WO2019072831 |
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
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Apr 25, 2025
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Means of redress
OPPO
Jan 21, 2025
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Complaint
OPPO
Jul 21, 2023
Complaint
OPPO
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
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Jul 12, 2023
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Jul 12, 2023
Oct 25, 2022
Sep 15, 2022
Decision to grant a European patent
Search/Exam
Sep 6, 2022
(Electronic) Receipt
Search/Exam
Sep 6, 2022
Filing of the translations of the claims
Search/Exam
Sep 6, 2022
French translation of claims
Search/Exam
Sep 6, 2022
German translation of the claims
Search/Exam
May 31, 2022
May 31, 2022
May 31, 2022
Intention to grant (signatures)
Search/Exam
May 31, 2022
Text intended for grant (clean copy)
Search/Exam
May 31, 2022
Apr 29, 2022
Examination started
Search/Exam
Jan 5, 2022
Nov 16, 2021
Priority search results copy provided by EPO
Search/Exam
Sep 27, 2021
Sep 27, 2021
Sep 3, 2021
Information regarding early processing
Search/Exam
Aug 20, 2021
(Electronic) Receipt
Search/Exam
Aug 20, 2021
Request for entry into the European phase
Search/Exam
Jul 30, 2021
Information on entry into European phase
Search/Exam
Feb 26, 2021
Feb 26, 2021
Feb 26, 2021
Feb 26, 2021
Feb 26, 2021
Feb 26, 2021
Feb 11, 2021
Notification of election of EPO
Search/Exam
Jan 28, 2021
Jan 28, 2021
Jan 27, 2021
Jan 19, 2021
Jan 19, 2021
Jan 19, 2021
Jan 19, 2021
Jan 19, 2021
Notification of the recording of a change
Search/Exam
Jan 19, 2021
Notification of the recording of a change
Search/Exam
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
PCT demand form
PCT2
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
Oct 12, 2020
Oct 12, 2020
Sep 24, 2020
Copy of the international search report
Search/Exam
Sep 24, 2020
Published international application - A1
Search/Exam
Jul 16, 2020
Mar 18, 2020
Mar 12, 2020
(Electronic) Receipt
PCTRO
Mar 12, 2020
Abstract
PCTRO
Mar 12, 2020
Claims
PCTRO
Mar 12, 2020
Description
PCTRO
Mar 12, 2020
Mar 12, 2020
Mar 12, 2020
Mar 12, 2020