The patent EP3731801 was granted to L'Oreal on Mar 9, 2022. The application was originally filed on Dec 28, 2018 under application number EP18837111A. The patent is currently recorded with a legal status of "Revoked".

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.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - Anonymous, "Edenor PK 1805", Cognis, (20041122), Cognis, (20230103), XP093011184 | - |
| OPPOSITION | - Hoyu Bigen, "Floral Fruity Hair Dye Cream", GNPD, MINTEL, (20170421), Database accession no. 4762451, XP093011180 | - |
| OPPOSITION | - Hoyu Bigen Speedy, "Conditioning Colour", GNPD, MINTEL, (20170615), Database accession no. 4880145, XP093011181 | - |
| OPPOSITION | - Hoyu, "Floral Fruity Hair Dye Cream", GNPD, MINTEL, Database accession no. 4762451, XP093175603 | - |
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Decision to grant a European patent
Search/Exam
Jan 28, 2022
(Electronic) Receipt
Search/Exam
Jan 28, 2022
Filing of the translations of the claims
Search/Exam
Jan 28, 2022
French translation of claims
Search/Exam
Jan 28, 2022
German translation of the claims
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Sep 29, 2021
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Intention to grant (signatures)
Search/Exam
Sep 29, 2021
Text intended for grant (clean copy)
Search/Exam
Sep 29, 2021
Jun 18, 2021
Examination started
Search/Exam
Feb 8, 2021
(Electronic) Receipt
Search/Exam
Feb 8, 2021
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Amended claims with annotations
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Feb 8, 2021
Amendments received before examination
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Feb 8, 2021
Annex
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Feb 8, 2021
Letter accompanying subsequently filed items
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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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Aug 4, 2020
Communication to designated inventor
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Jul 28, 2020
(Electronic) Receipt
Search/Exam
Jul 28, 2020
Request for entry into the European phase
Search/Exam
Jul 13, 2020
May 8, 2020
Information on entry into European phase
Search/Exam
Apr 30, 2020
Apr 30, 2020
Notification of the recording of a change
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Jul 22, 2019
Jul 4, 2019
Copy of the international search report
Search/Exam
Jul 4, 2019
Published international application - A1
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Mar 11, 2019
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ISR: cited documents
PCTISA
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Annex
PCTISA
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Annex
PCTISA
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Abstract
PCTISA
Jan 21, 2019
Annex
PCTISA
Jan 21, 2019
Claims
PCTISA
Jan 21, 2019
Description
PCTISA
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Drawings
PCTISA
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