The patent EP3496534 was granted to Ashland Industries Europe on Oct 6, 2021. The application was originally filed on Aug 3, 2017 under application number EP17751701A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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.
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
Oct 23, 2025
Oct 22, 2025
Oct 16, 2025
(Electronic) Receipt
Appeal
Oct 16, 2025
Oct 16, 2025
Oct 16, 2025
Oct 14, 2025
Oct 14, 2025
Oct 8, 2025
Oct 8, 2025
Sep 18, 2025
Jul 23, 2024
Jul 18, 2024
(Electronic) Receipt
Appeal
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Jul 18, 2024
Reply to appeal
Appeal
Mar 18, 2024
Mar 7, 2024
Non-scannable object
Appeal
Mar 7, 2024
Mar 5, 2024
Jan 8, 2024
Jan 8, 2024
Dec 28, 2023
General authorisation
Appeal
Dec 28, 2023
Notice of appeal
Appeal
Dec 22, 2023
Notice of appeal
Appeal
Dec 22, 2023
Notice of appeal
Appeal
Nov 20, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Means of redress
OPPO
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 9, 2023
Sep 21, 2023
Sep 20, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Sep 18, 2023
Aug 22, 2023
Aug 22, 2023
Aug 22, 2023
Aug 17, 2023
Aug 17, 2023
Aug 17, 2023
Jul 27, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jul 20, 2023
Jul 18, 2023
Jul 18, 2023
Jul 17, 2023
Jul 17, 2023
Feb 22, 2023
Feb 21, 2023
Feb 21, 2023
Feb 20, 2023
Feb 17, 2023
Feb 17, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Dec 6, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Jul 20, 2022
Jul 20, 2022
Jul 5, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 29, 2022
Jun 28, 2022
Jun 28, 2022
Jun 28, 2022
Jun 28, 2022
Jun 28, 2022
Jun 28, 2022
Oct 27, 2021
Annexes in respect of a client data request
Search/Exam
Oct 27, 2021
Annexes in respect of a client data request
Search/Exam
Oct 19, 2021
Sep 9, 2021
Decision to grant a European patent
Search/Exam
Aug 24, 2021
Aug 13, 2021
(Electronic) Receipt
Search/Exam
Aug 13, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 12, 2021
Aug 3, 2021
(Electronic) Receipt
Search/Exam
Aug 3, 2021
Annexes in respect of a client data request
Search/Exam
Aug 3, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 3, 2021
Jun 21, 2021
(Electronic) Receipt
Search/Exam
Jun 21, 2021
Filing of the translations of the claims
Search/Exam
Jun 21, 2021
French translation of claims
Search/Exam
Jun 21, 2021
German translation of the claims
Search/Exam
Apr 6, 2021
Apr 6, 2021
Apr 6, 2021
Mar 30, 2021
(Electronic) Receipt
Search/Exam
Mar 30, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 30, 2021
Mar 30, 2021
Feb 11, 2021
Feb 11, 2021
Feb 11, 2021
Intention to grant (signatures)
Search/Exam
Feb 11, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 11, 2021
Nov 10, 2020
Nov 3, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 3, 2020
Oct 8, 2020
(Electronic) Receipt
Search/Exam
Oct 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 8, 2020
Jul 10, 2020
Jul 7, 2020
(Electronic) Receipt
Search/Exam
Jul 7, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2020
Apr 7, 2020
Annex to the communication
Search/Exam
Apr 7, 2020
Communication from the Examining Division
Search/Exam
Mar 31, 2020
Examination started
Search/Exam
Nov 29, 2019
(Electronic) Receipt
Search/Exam
Nov 29, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 13, 2019
Oct 1, 2019
(Electronic) Receipt
Search/Exam
Oct 1, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 1, 2019
Reply to Written Opinion prepared by the EPO
Search/Exam
May 22, 2019
Mar 27, 2019
Mar 25, 2019
Communication to designated inventor
Search/Exam
Mar 25, 2019
Communication to designated inventor
Search/Exam
Mar 25, 2019
Communication to designated inventor
Search/Exam
Mar 25, 2019
Communication to designated inventor
Search/Exam
Mar 5, 2019
Jan 25, 2019
(Electronic) Receipt
Search/Exam
Jan 25, 2019
Request for entry into the European phase
Search/Exam
Jan 4, 2019
Information on entry into European phase
Search/Exam
Mar 12, 2018
Feb 22, 2018
Copy of the international search report
Search/Exam
Feb 22, 2018
Published international application - A1
Search/Exam
Oct 9, 2017
Oct 9, 2017
Oct 9, 2017
Sep 22, 2017
Aug 25, 2017
Aug 3, 2017
(Electronic) Receipt
PCTRO
Aug 3, 2017
Abstract
PCTRO
Aug 3, 2017
Claims
PCTRO
Aug 3, 2017
Description
PCTRO
Aug 3, 2017
Aug 3, 2017