The patent EP3131421 was granted to Unilever on Oct 1, 2025. The application was originally filed on Nov 3, 2014 under application number EP14793093A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
Get a free citation report including examiner, opposition, and international search citations.
Get Citation ReportThe 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
Sep 4, 2025
Sep 4, 2025
Aug 26, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 6, 2025
Annexes in respect of a client data request
Search/Exam
Aug 6, 2025
Letter accompanying subsequently filed items
Search/Exam
Aug 6, 2025
Jun 10, 2025
Jun 10, 2025
Jun 10, 2025
May 28, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Means of redress
Search/Exam
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 11, 2025
Jan 15, 2025
Jan 10, 2025
Jan 10, 2025
Jan 10, 2025
Dec 16, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Nov 12, 2024
Nov 8, 2024
Nov 7, 2024
Nov 7, 2024
Nov 7, 2024
Nov 5, 2024
Nov 5, 2024
Nov 5, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Nov 15, 2023
Nov 15, 2023
Nov 15, 2023
Oct 5, 2023
Oct 5, 2023
Oct 5, 2023
Sep 20, 2023
Sep 14, 2023
(Electronic) Receipt
Appeal
Sep 14, 2023
Sep 14, 2023
Aug 28, 2023
Aug 23, 2023
(Electronic) Receipt
Appeal
Aug 23, 2023
Aug 23, 2023
Aug 22, 2023
Aug 18, 2023
(Electronic) Receipt
Appeal
Aug 18, 2023
Aug 18, 2023
Jul 4, 2023
Jul 4, 2023
Jul 4, 2023
May 25, 2023
Apr 19, 2023
Apr 14, 2023
(Electronic) Receipt
Appeal
Apr 14, 2023
Apr 14, 2023
Apr 13, 2023
Apr 6, 2023
(Electronic) Receipt
Appeal
Apr 6, 2023
Mar 28, 2023
Mar 28, 2023
Feb 16, 2023
Feb 16, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Jan 9, 2023
Jan 9, 2023
General authorisation
Appeal
Jan 9, 2023
May 30, 2022
May 30, 2022
May 24, 2022
May 4, 2022
Nov 19, 2021
Nov 15, 2021
(Electronic) Receipt
Appeal
Nov 15, 2021
Nov 15, 2021
Reply to appeal
Appeal
Oct 22, 2021
Aug 17, 2021
Aug 12, 2021
(Electronic) Receipt
Appeal
Aug 12, 2021
Aug 12, 2021
Aug 5, 2021
Jul 30, 2021
(Electronic) Receipt
Appeal
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
Jul 30, 2021
May 28, 2021
May 28, 2021
May 20, 2021
(Electronic) Receipt
Appeal
May 20, 2021
May 20, 2021
Notice of appeal
Appeal
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Means of redress
OPPO
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Feb 9, 2021
Feb 8, 2021
Feb 3, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Jan 20, 2021
Jan 14, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Jan 7, 2021
Dec 10, 2020
Annexes in respect of a client data request
Search/Exam
Dec 10, 2020
Annexes in respect of a client data request
Search/Exam
Dec 10, 2020
Dec 3, 2020
Dec 3, 2020
Nov 30, 2020
Nov 30, 2020
Oct 30, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 1, 2020
Document concerning representation
Search/Exam
Sep 29, 2020
Sep 29, 2020
Sep 29, 2020
Sep 24, 2020
Sep 21, 2020
Sep 21, 2020
Sep 21, 2020
Sep 21, 2020
Sep 21, 2020
Jun 23, 2020
Jun 18, 2020
Jun 18, 2020
Jun 18, 2020
Jun 12, 2020
(Electronic) Receipt
Search/Exam
Jun 12, 2020
Jun 12, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 9, 2020
Jun 4, 2020
Jun 4, 2020
May 29, 2020
May 29, 2020
Apr 29, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Mar 12, 2020
Mar 11, 2020
Mar 9, 2020
Mar 9, 2020
Mar 9, 2020
Mar 6, 2020
Mar 6, 2020
Mar 6, 2020
Mar 6, 2020
Oct 21, 2019
Oct 17, 2019
Oct 14, 2019
Oct 14, 2019
Oct 14, 2019
Oct 14, 2019
Oct 14, 2019
Oct 10, 2019
Oct 3, 2019
Oct 2, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Jul 31, 2019
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
May 31, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
Jan 15, 2019
Jan 15, 2019
Jan 3, 2019
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Dec 20, 2018
Apr 3, 2018
Feb 22, 2018
Decision to grant a European patent
Search/Exam
Feb 5, 2018
(Electronic) Receipt
Search/Exam
Feb 5, 2018
French translation of claims
Search/Exam
Feb 5, 2018
German translation of the claims
Search/Exam
Feb 5, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 2, 2017
Nov 2, 2017
Nov 2, 2017
Intention to grant (signatures)
Search/Exam
Nov 2, 2017
Text intended for grant (clean copy)
Search/Exam
Nov 2, 2017
Oct 2, 2017
Examination started
Search/Exam
Sep 5, 2017
Jan 25, 2017
Jul 15, 2016
Communication to designated inventor
Search/Exam
Jul 15, 2016
Communication to designated inventor
Search/Exam
Jul 15, 2016
Communication to designated inventor
Search/Exam
Jul 12, 2016
Priority search results copy provided by EPO
Search/Exam
Jun 21, 2016
Jun 21, 2016
Jun 8, 2016
Refund of fees
Search/Exam
May 3, 2016
(Electronic) Receipt
Search/Exam
May 3, 2016
Request for entry into the European phase
Search/Exam
Apr 22, 2016
Information on entry into European phase
Search/Exam
Dec 1, 2015
Dec 1, 2015
Dec 1, 2015
Dec 1, 2015
Dec 1, 2015
Nov 3, 2015
Notification of election of EPO
Search/Exam
Oct 16, 2015
Oct 12, 2015
Oct 12, 2015
PCT demand form
PCT2
Oct 12, 2015
Oct 12, 2015
Oct 12, 2015
Oct 8, 2015
Oct 8, 2015
PCT demand form
PCT2
Oct 8, 2015
Oct 8, 2015
Oct 8, 2015
Oct 8, 2015
Jul 7, 2015
Jun 18, 2015
Copy of the international search report
Search/Exam
Jun 18, 2015
Published international application - A1
Search/Exam
May 13, 2015
Jan 23, 2015
Jan 23, 2015
Jan 23, 2015
Nov 3, 2014
(Electronic) Receipt
PCTRO
Nov 3, 2014
Abstract
PCTRO
Nov 3, 2014
Claims
PCTRO
Nov 3, 2014
Description
PCTRO
Nov 3, 2014
Drawings
PCTRO
Nov 3, 2014
Nov 3, 2014
Nov 3, 2014