Patent No. EP3496534 (titled "Liquid Concentrate For Preservation") was filed by Ashland Industries Europe on Aug 3, 2017. The application was issued on Oct 6, 2021.

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.
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
Nov 13, 2025
Nov 10, 2025
Oct 28, 2025
Oct 28, 2025
Oct 27, 2025
Oct 27, 2025
Oct 23, 2025
Oct 22, 2025
Oct 16, 2025
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
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
Mar 18, 2024
Mar 7, 2024
Mar 7, 2024
Mar 5, 2024
Jan 8, 2024
Jan 8, 2024
Dec 28, 2023
Dec 28, 2023
Dec 22, 2023
Dec 22, 2023
Nov 20, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
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
Oct 27, 2021
Oct 19, 2021
Sep 9, 2021
Aug 24, 2021
Aug 13, 2021
Aug 13, 2021
Aug 12, 2021
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Jun 21, 2021
Jun 21, 2021
Jun 21, 2021
Jun 21, 2021
Apr 6, 2021
Apr 6, 2021
Apr 6, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Feb 11, 2021
Feb 11, 2021
Feb 11, 2021
Feb 11, 2021
Feb 11, 2021
Nov 10, 2020
Nov 3, 2020
Nov 3, 2020
Oct 8, 2020
Oct 8, 2020
Oct 8, 2020
Jul 10, 2020
Jul 7, 2020
Jul 7, 2020
Jul 7, 2020
Apr 7, 2020
Apr 7, 2020
Mar 31, 2020
Nov 29, 2019
Nov 29, 2019
Nov 13, 2019
Oct 1, 2019
Oct 1, 2019
Oct 1, 2019
May 22, 2019
Mar 27, 2019
Mar 25, 2019
Mar 25, 2019
Mar 25, 2019
Mar 25, 2019
Mar 5, 2019
Jan 25, 2019
Jan 25, 2019
Jan 4, 2019
Mar 12, 2018
Feb 22, 2018
Feb 22, 2018
Oct 9, 2017
Oct 9, 2017
Oct 9, 2017
Sep 22, 2017
Aug 25, 2017
Aug 3, 2017
Aug 3, 2017
Aug 3, 2017
Aug 3, 2017
Aug 3, 2017
Aug 3, 2017