Patent No. EP2928977 (titled "Adhesive System For Preparing Lignocellulosic Composites") was filed by Henkel on Dec 3, 2013. The application was issued on Oct 28, 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 |
|---|---|---|
| JOWAT | Jul 22, 2021 | VON ROHR |
| JOWAT | Jul 22, 2021 | VON ROHR PATENTANWALTE PARTNERSCHAFT MBB |
| DYNEA | Jul 2, 2021 | ZACCO NORWAY |
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
Jan 16, 2026
Jan 15, 2026
Jan 15, 2026
Jan 15, 2026
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 5, 2025
May 5, 2025
May 5, 2025
May 2, 2025
May 2, 2025
May 2, 2025
Apr 28, 2025
Apr 28, 2025
Apr 25, 2025
Apr 25, 2025
Apr 25, 2025
Apr 17, 2025
Apr 17, 2025
Apr 17, 2025
Feb 11, 2025
Feb 11, 2025
Feb 11, 2025
Jun 17, 2024
Jun 17, 2024
Jun 17, 2024
May 8, 2024
May 3, 2024
May 3, 2024
May 3, 2024
Apr 25, 2024
Apr 25, 2024
Apr 22, 2024
Apr 22, 2024
Apr 22, 2024
Apr 18, 2024
Apr 18, 2024
Apr 18, 2024
Apr 15, 2024
Apr 15, 2024
Jan 23, 2024
Jan 22, 2024
Jan 22, 2024
Jan 22, 2024
Jan 8, 2024
Nov 23, 2023
Nov 23, 2023
Nov 17, 2023
Nov 17, 2023
Nov 17, 2023
Nov 15, 2023
Nov 15, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Jul 19, 2023
Jul 19, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jun 9, 2023
Jun 9, 2023
Jun 5, 2023
Jun 5, 2023
Jun 5, 2023
May 19, 2023
May 19, 2023
May 19, 2023
May 12, 2023
May 12, 2023
May 12, 2023
Mar 29, 2023
Mar 17, 2023
Mar 14, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 7, 2023
Feb 7, 2023
Feb 1, 2023
Feb 1, 2023
Jan 26, 2023
Jan 18, 2023
Jan 18, 2023
Jan 13, 2023
Jan 13, 2023
Jan 13, 2023
Jan 3, 2023
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 13, 2022
Dec 13, 2022
Dec 8, 2022
Dec 8, 2022
Dec 7, 2022
Dec 7, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Nov 28, 2022
Nov 28, 2022
Nov 28, 2022
Oct 27, 2022
Oct 27, 2022
Oct 24, 2022
Oct 24, 2022
Oct 24, 2022
Jun 3, 2022
Jun 3, 2022
Jun 3, 2022
Jun 1, 2022
Jun 1, 2022
May 30, 2022
May 27, 2022
May 27, 2022
May 27, 2022
May 25, 2022
May 23, 2022
May 23, 2022
May 23, 2022
May 23, 2022
May 23, 2022
Apr 12, 2022
Apr 12, 2022
Apr 5, 2022
Apr 5, 2022
Apr 5, 2022
Dec 13, 2021
Dec 13, 2021
Dec 13, 2021
Dec 8, 2021
Dec 8, 2021
Dec 8, 2021
Aug 9, 2021
Aug 9, 2021
Aug 9, 2021
Jul 27, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 7, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Jul 2, 2021
Nov 9, 2020
Oct 1, 2020
Sep 16, 2020
Sep 16, 2020
Sep 16, 2020
Sep 16, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
Jul 26, 2019
Apr 5, 2019
Apr 5, 2019
Dec 21, 2018
Dec 21, 2018
Dec 21, 2018
Dec 21, 2018
Dec 21, 2018
Sep 11, 2018
Sep 11, 2018
Sep 11, 2018
Sep 11, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Nov 7, 2017
Nov 7, 2017
Oct 31, 2017
Aug 17, 2017
Feb 23, 2016
Sep 16, 2015
Sep 16, 2015
Sep 3, 2015
Aug 31, 2015
Aug 28, 2015
Aug 21, 2015
Aug 12, 2015
Aug 10, 2015
Aug 10, 2015
Aug 10, 2015
Aug 10, 2015
Aug 10, 2015
Aug 7, 2015
Aug 5, 2015
Aug 5, 2015
Jul 3, 2015
Jul 3, 2015
Jul 3, 2015
Jul 3, 2015
Jun 23, 2015
May 27, 2015
May 27, 2015
May 27, 2015
May 27, 2015
May 27, 2015
May 27, 2015
Apr 17, 2015
Jul 3, 2014
Jun 12, 2014
Jun 12, 2014
Feb 5, 2014
Feb 5, 2014
Feb 5, 2014
Dec 3, 2013
Dec 3, 2013
Dec 3, 2013
Dec 3, 2013