Patent No. EP2950774 (titled "Dye Composition Using At Least One Coupler Of Meta-Phenylenediamine Type Substituted In Position 4 In A Medium Comprising A Fatty Substance, Processes And Device") was filed by L'Oreal on Jan 29, 2014. The application was issued on Jul 25, 2018.

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 |
|---|---|---|
| HENKEL | Apr 24, 2019 | LKGLOBAL LORENZ & KOPF |
| KAO GERMANY | Apr 23, 2019 | - |
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
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
May 13, 2024
May 13, 2024
May 13, 2024
May 13, 2024
Apr 11, 2024
Apr 11, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 6, 2024
Apr 6, 2024
Apr 6, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 3, 2024
Apr 3, 2024
Apr 2, 2024
Apr 2, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Dec 21, 2023
Dec 21, 2023
Dec 18, 2023
Dec 18, 2023
Dec 18, 2023
Aug 3, 2023
Aug 3, 2023
Aug 3, 2023
Jul 31, 2023
Mar 13, 2023
Mar 6, 2023
Mar 6, 2023
Jan 18, 2023
Jan 18, 2023
Jan 13, 2023
Jan 13, 2023
Jan 13, 2023
Sep 5, 2022
Sep 5, 2022
Sep 5, 2022
May 23, 2022
Mar 18, 2022
Mar 18, 2022
Mar 15, 2022
Mar 15, 2022
Mar 15, 2022
Nov 9, 2021
Nov 5, 2021
Nov 5, 2021
Oct 29, 2021
Oct 29, 2021
Oct 29, 2021
Jul 28, 2021
Jul 28, 2021
Jul 28, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jun 29, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
Jun 23, 2021
May 21, 2021
May 11, 2021
May 11, 2021
Mar 29, 2021
Mar 29, 2021
Mar 25, 2021
Mar 25, 2021
Mar 23, 2021
Mar 23, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 19, 2021
Mar 19, 2021
Mar 19, 2021
Mar 18, 2021
Mar 18, 2021
Mar 18, 2021
Mar 18, 2021
Jan 6, 2021
Dec 29, 2020
Dec 23, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Oct 21, 2020
Oct 21, 2020
Oct 20, 2020
Oct 14, 2020
Oct 14, 2020
Oct 14, 2020
Oct 13, 2020
Oct 13, 2020
Oct 13, 2020
Oct 9, 2020
Oct 9, 2020
Oct 9, 2020
Oct 8, 2020
Oct 8, 2020
Oct 8, 2020
Aug 26, 2020
Aug 26, 2020
Aug 26, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Jul 14, 2020
Jul 14, 2020
Jul 13, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jul 8, 2020
Jun 25, 2020
Jun 22, 2020
Jun 10, 2020
May 28, 2020
May 28, 2020
May 28, 2020
May 25, 2020
May 25, 2020
May 25, 2020
Apr 21, 2020
Apr 21, 2020
Apr 16, 2020
Apr 16, 2020
Apr 16, 2020
Apr 15, 2020
Apr 15, 2020
Apr 15, 2020
Apr 15, 2020
Apr 15, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 9, 2020
Apr 8, 2020
Apr 8, 2020
Apr 8, 2020
Mar 26, 2020
Mar 26, 2020
Mar 20, 2020
Mar 20, 2020
Mar 20, 2020
Dec 13, 2019
Dec 13, 2019
Dec 13, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Sep 24, 2019
Sep 24, 2019
Sep 18, 2019
Sep 18, 2019
Sep 18, 2019
Sep 18, 2019
May 8, 2019
May 8, 2019
May 8, 2019
Apr 29, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 24, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Aug 6, 2018
Jun 28, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Feb 6, 2018
Feb 6, 2018
Feb 6, 2018
Feb 6, 2018
Feb 6, 2018
Nov 24, 2017
Nov 24, 2017
Nov 24, 2017
Nov 24, 2017
Nov 24, 2017
Sep 28, 2017
Sep 22, 2017
Sep 22, 2017
Sep 22, 2017
May 24, 2017
May 24, 2017
May 4, 2017
May 6, 2016
May 6, 2016
May 6, 2016
Nov 11, 2015
Oct 30, 2015
Oct 21, 2015
Oct 14, 2015
Oct 7, 2015
Sep 8, 2015
Aug 28, 2015
Aug 28, 2015
Aug 17, 2015
Jun 12, 2015
Nov 6, 2014
Nov 6, 2014
Sep 11, 2014
Sep 11, 2014
Sep 11, 2014
Aug 26, 2014
Aug 26, 2014
Aug 7, 2014
Aug 7, 2014
Jan 29, 2014
Jan 29, 2014
Jan 29, 2014
Jan 29, 2014