Patent No. EP3418269 (titled "Method For Producing Sugar Alcohol") was filed by Toray Industries on Feb 16, 2017. The application was issued on Nov 25, 2020.

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 |
|---|---|---|
| HOFFMANN EITLE | Aug 24, 2021 | HOFFMANN EITLE |
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 20, 2025
Nov 20, 2025
Nov 12, 2025
Nov 12, 2025
Nov 12, 2025
Nov 12, 2025
Nov 12, 2025
Oct 17, 2025
Oct 17, 2025
Oct 17, 2025
Oct 15, 2025
Oct 14, 2025
Oct 14, 2025
Oct 13, 2025
Oct 8, 2025
Oct 8, 2025
Oct 8, 2025
Sep 22, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 15, 2025
Sep 15, 2025
Sep 9, 2025
Sep 9, 2025
Sep 9, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jun 11, 2025
May 20, 2025
May 20, 2025
May 20, 2025
Apr 16, 2025
Apr 11, 2025
Apr 11, 2025
Apr 11, 2025
Apr 11, 2025
Apr 8, 2025
Apr 8, 2025
Apr 8, 2025
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 4, 2023
Sep 28, 2023
Sep 28, 2023
Sep 28, 2023
Sep 26, 2023
Sep 25, 2023
Sep 25, 2023
Sep 25, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 21, 2023
Sep 21, 2023
Sep 21, 2023
Sep 21, 2023
Sep 21, 2023
Aug 1, 2023
Jul 31, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Feb 3, 2023
Feb 3, 2023
Nov 23, 2022
Nov 22, 2022
Nov 21, 2022
Nov 21, 2022
Nov 21, 2022
Nov 21, 2022
Nov 21, 2022
Nov 21, 2022
Nov 21, 2022
Jun 20, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Jun 13, 2022
Mar 22, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Feb 1, 2022
Feb 1, 2022
Jan 18, 2022
Jan 18, 2022
Jan 18, 2022
Sep 24, 2021
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Sep 8, 2021
Sep 8, 2021
Aug 31, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Aug 24, 2021
Dec 7, 2020
Oct 29, 2020
Oct 13, 2020
Oct 13, 2020
Oct 13, 2020
Oct 13, 2020
Oct 13, 2020
Jun 26, 2020
Jun 26, 2020
Jun 26, 2020
Jun 26, 2020
Jun 26, 2020
Jun 11, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Sep 12, 2019
Aug 26, 2019
Aug 26, 2019
Aug 26, 2019
Aug 26, 2019
Aug 16, 2019
Nov 28, 2018
Sep 25, 2018
Sep 21, 2018
Sep 21, 2018
Sep 21, 2018
Sep 21, 2018
Sep 6, 2018
Sep 6, 2018
Aug 10, 2018
Aug 10, 2018
Aug 10, 2018
Aug 10, 2018
Aug 10, 2018
Aug 10, 2018
Aug 10, 2018
Jun 29, 2018
Sep 12, 2017
Sep 12, 2017
Aug 24, 2017
Aug 24, 2017
Aug 24, 2017