Powder Composition Comprising Hair Direct Dyes

Patent No. EP3684329 (titled "Powder Composition Comprising Hair Direct Dyes") was filed by KAO on Sep 20, 2018. The application was issued on Jun 24, 2026.

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
L'OREAL	Jul 19, 2022	LOREAL

Dossier Documents

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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May 29, 2026
Decision to maintain the European patent in amended form
May 29, 2026
Decision to maintain the European patent in amended form
May 19, 2026
(Electronic) Receipt
May 19, 2026
Filing of the translation of the amended claims
May 19, 2026
German translation of the claims
May 19, 2026
Letter accompanying subsequently filed items
May 13, 2026
(Electronic) Receipt
May 13, 2026
Filing of the translation of the amended claims
May 13, 2026
French translation of claims
May 13, 2026
German translation of the claims
May 13, 2026
Letter accompanying subsequently filed items
Mar 23, 2026
Communication of bibliographic data
Mar 23, 2026
Communication to opponent concerning maintenance
Mar 23, 2026
Communication with request to file translations
Mar 18, 2026
Maintenance of the patent with the documents specified in the final decision
Mar 12, 2026
Decision of the Board of Appeal
Mar 12, 2026
F3032 Notification(s) of the decision
Mar 12, 2026
F3032 Notification(s) of the decision
Jan 30, 2026
F3013 Oral Proceedings: Forwarding minutes
Jan 30, 2026
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Dec 23, 2025
F3345 Forwarding of submissions to parties
Dec 18, 2025
(Electronic) Receipt
Dec 18, 2025
(Electronic) Receipt
Dec 18, 2025
Letter accompanying subsequently filed items
Dec 18, 2025
Letter accompanying subsequently filed items
Dec 18, 2025
Request for interpreters during oral proceedings
Nov 4, 2025
F3345 Forwarding of submissions to parties
Nov 3, 2025
(Electronic) Receipt
Nov 3, 2025
F3345 Forwarding of submissions to parties
Nov 3, 2025
Letter accompanying subsequently filed items
Nov 3, 2025
Oral proceedings: change of venue
Nov 3, 2025
Oral proceedings: change of venue
Nov 3, 2025
Request for interpreters during oral proceedings
Oct 31, 2025
(Electronic) Receipt
Oct 31, 2025
Letter accompanying subsequently filed items
Oct 31, 2025
Letter dealing with oral proceedings during the appeal procedure
Oct 29, 2025
F3004 Communication of the Registry
Sep 25, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Sep 25, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Apr 15, 2025
F3345 Forwarding of submissions to parties
Apr 10, 2025
(Electronic) Receipt
Apr 10, 2025
Letter accompanying subsequently filed items
Apr 10, 2025
Letter dealing with oral proceedings during the appeal procedure
Apr 2, 2025
F3011.1 Oral Proceedings: summons
Apr 2, 2025
F3011.1 Oral Proceedings: summons
Mar 28, 2025
F3010 Oral proceedings: order for summons
Mar 28, 2025
F3056 Communication: Change of Board due to the technical nature of the appeal
Mar 28, 2025
F3056 Communication: Change of Board due to the technical nature of the appeal
Mar 27, 2025
F3303.16 Change of composition of the Board (T)
Aug 19, 2024
Composition of the board (T)
Aug 16, 2024
F3345 Forwarding of submissions to parties
Aug 12, 2024
(Electronic) Receipt
Aug 12, 2024
Claims
Aug 12, 2024
Letter accompanying subsequently filed items
Aug 12, 2024
Reply to appeal
Apr 12, 2024
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Apr 5, 2024
(Electronic) Receipt
Apr 5, 2024
Letter accompanying subsequently filed items
Apr 5, 2024
Statement of grounds of appeal
Feb 19, 2024
F3345 Forwarding of submissions to parties
Feb 14, 2024
(Electronic) Receipt
Feb 14, 2024
Letter accompanying subsequently filed items
Feb 14, 2024
Letter relating to Appeal Procedure
Feb 12, 2024
F3204 Communication of the file number to the parties
Feb 12, 2024
F3204 Communication of the file number to the parties
Feb 6, 2024
(Electronic) Receipt
Feb 6, 2024
Letter accompanying subsequently filed items
Feb 6, 2024
Notice of appeal
Dec 13, 2023
Advice of delivery
Dec 11, 2023
Advice of delivery
Dec 7, 2023
Annex to the communication - opposition
Dec 7, 2023
Decision of the Opposition Division and instruction
Dec 7, 2023
Druckexemplar in opposition procedure
Dec 7, 2023
Grounds for the decision (Annex) - opposition
Dec 7, 2023
Interlocutory decision in opposition proceedings
Dec 7, 2023
Interlocutory decision in opposition proceedings
Dec 7, 2023
Means of redress
Dec 7, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 7, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 7, 2023
Provision of a copy of the minutes - opposition procedure
Dec 7, 2023
Provision of a copy of the minutes - opposition procedure
Dec 7, 2023
Scanned annex to a communication - opposition procedure
Dec 7, 2023
Scanned annex to a communication - opposition procedure
Dec 7, 2023
Transmittal of decision / summons - opposition
Dec 7, 2023
Transmittal of decision / summons - opposition
Nov 7, 2023
Information about the result of oral proceedings
Oct 25, 2023
Brief communication - Opposition proceedings
Oct 20, 2023
(Electronic) Receipt
Oct 20, 2023
Auxiliary request during Opposition procedure - 01
Oct 20, 2023
Description
Oct 20, 2023
Letter accompanying subsequently filed items
Oct 20, 2023
Written submission in preparation to/during oral proceedings
Oct 12, 2023
(Electronic) Receipt
Oct 12, 2023
Letter accompanying subsequently filed items
Sep 12, 2023
Brief communication - Opposition proceedings
Sep 7, 2023
(Electronic) Receipt
Sep 7, 2023
(Electronic) Receipt
Sep 7, 2023
Description
Sep 7, 2023
Letter accompanying subsequently filed items
Sep 7, 2023
Letter accompanying subsequently filed items
Sep 7, 2023
Written submission in preparation to/during oral proceedings
Sep 6, 2023
Brief communication - Opposition proceedings
Sep 1, 2023
(Electronic) Receipt
Sep 1, 2023
(Electronic) Receipt
Sep 1, 2023
Letter accompanying subsequently filed items
Sep 1, 2023
Letter accompanying subsequently filed items
Sep 1, 2023
Written submission in preparation to/during oral proceedings
Feb 13, 2023
Advice of delivery
Feb 13, 2023
Annex to the communication - opposition
Feb 13, 2023
Scanned annex to a communication - opposition procedure
Feb 13, 2023
Summons to attend oral proceedings
Feb 13, 2023
Summons to attend oral proceedings
Feb 13, 2023
Transmittal of decision / summons - opposition
Feb 13, 2023
Transmittal of decision / summons - opposition
Feb 6, 2023
Information about the result of oral proceedings
Nov 16, 2022
Brief communication - Opposition proceedings
Nov 10, 2022
(Electronic) Receipt
Nov 10, 2022
Citation in opposition procedure - 008
Nov 10, 2022
Citation in opposition procedure - 009
Nov 10, 2022
Consolidated list of cited opposition documents
Nov 10, 2022
Letter accompanying subsequently filed items
Nov 10, 2022
Main request during Opposition procedure
Nov 10, 2022
Reply of the patent proprietor to the notice(s) of opposition
Aug 1, 2022
Brief communication - Opposition proceedings
Aug 1, 2022
Communication of a notice of opposition and request to file observations
Aug 1, 2022
Notice of further oppositions to opponent(s)
Jul 27, 2022
(Electronic) Receipt
Jul 27, 2022
Letter accompanying subsequently filed items
Jul 27, 2022
Letter regarding the opposition procedure (no time limit)
Jul 25, 2022
Communication of a notice of opposition - first information to patent proprietor
Jul 19, 2022
(Electronic) Receipt
Jul 19, 2022
Citation in opposition procedure - 001
Jul 19, 2022
Citation in opposition procedure - 002
Jul 19, 2022
Citation in opposition procedure - 003
Jul 19, 2022
Citation in opposition procedure - 004
Jul 19, 2022
Citation in opposition procedure - 005
Jul 19, 2022
Citation in opposition procedure - 006
Jul 19, 2022
Citation in opposition procedure - 007
Jul 19, 2022
Notice of opposition
Jul 19, 2022
Notice of opposition
Nov 3, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 23, 2021
Decision to grant a European patent
Aug 19, 2021
(Electronic) Receipt
Aug 19, 2021
Filing of the translations of the claims
Aug 19, 2021
French translation of claims
Aug 19, 2021
German translation of the claims
Aug 19, 2021
Letter accompanying subsequently filed items
May 26, 2021
Bibliographic data of the European patent application
May 26, 2021
Communication about intention to grant a European patent
May 26, 2021
Intention to grant (signatures)
May 26, 2021
Text intended for grant (clean copy)
May 26, 2021
Text intended for grant (version for approval)
Apr 20, 2021
Examination started
Nov 9, 2020
(Electronic) Receipt
Nov 9, 2020
Letter accompanying subsequently filed items
Nov 9, 2020
Reply to Written Opinion prepared by the EPO
Jul 1, 2020
Notification on forthcoming publication of bibliographic data
Apr 29, 2020
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Apr 24, 2020
Communication to designated inventor
Apr 24, 2020
Communication to designated inventor
Apr 24, 2020
Communication to designated inventor
Apr 24, 2020
Communication to designated inventor
Apr 21, 2020
Priority search results copy provided by EPO
Apr 9, 2020
Copy of the international preliminary report on patentability
Mar 9, 2020
(Electronic) Receipt
Mar 9, 2020
Request for entry into the European phase
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Feb 11, 2020
Notification of the recording of a change
Jan 31, 2020
Information on entry into European phase
Apr 16, 2019
Priority document (electronically transmitted)
Mar 28, 2019
Copy of the international search report
Mar 28, 2019
Published international application - A1
Nov 30, 2018
ISR: cited documents
Nov 29, 2018
Written opinion of the ISA, boxes No. I to VIII
Nov 29, 2018
Written opinion of the ISA, cover sheet
Nov 29, 2018
Written opinion of the ISA, supplemental box
Oct 4, 2018
Notification of receipt of Search copy
Oct 4, 2018
Notification of the international application number and of the international filing date
Sep 29, 2018
Request form for international application (copy for ISA/EP)
Sep 20, 2018
(Electronic) Receipt
Sep 20, 2018
Abstract
Sep 20, 2018
Claims
Sep 20, 2018
Description
Sep 20, 2018
Document concerning fees and payments
Sep 20, 2018
Electronic request for grant of an International application
Sep 20, 2018
Priority document (RO-procedure)

EP3684329

KAO

Application Number: EP18772805A
Filing Date: Sep 20, 2018
Status: Patent Maintained As Amended; May 22, 2026
Publication Date: Jun 24, 2026
External Links: Slate, Register , Google Patents

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Powder Composition Comprising Hair Direct Dyes

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Dossier Documents

EP3684329