Patent No. EP3349807 (titled "Hybrid Silicone And Acrylic Adhesive Cover For Use With Wound Treatment") was filed by KCI Licensing on Sep 14, 2016. The application was issued on Feb 24, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| PAUL HARTMANN | Nov 24, 2021 | - |
| CONVATEC | Nov 23, 2021 | D YOUNG |
| LOHMANN & RAUSCHER | Nov 23, 2021 | HERRMANN |
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
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Aug 4, 2025
Jul 31, 2025
Jul 31, 2025
Jul 31, 2025
Jul 31, 2025
Jul 31, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 4, 2025
Jul 4, 2025
Jul 4, 2025
Jul 4, 2025
Apr 9, 2025
Apr 9, 2025
Apr 9, 2025
Apr 9, 2025
Jan 16, 2025
Jan 16, 2025
Jan 16, 2025
Jan 14, 2025
Jan 14, 2025
Jan 14, 2025
Jan 14, 2025
Jan 14, 2025
Jan 14, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Nov 8, 2024
Nov 8, 2024
Nov 7, 2024
Nov 7, 2024
Nov 7, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 9, 2024
Oct 9, 2024
Oct 9, 2024
Oct 9, 2024
Oct 4, 2024
Oct 4, 2024
Jul 31, 2024
Jul 23, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 24, 2024
Jun 24, 2024
Jun 24, 2024
Jun 24, 2024
Apr 24, 2024
Apr 24, 2024
Apr 24, 2024
Apr 24, 2024
Apr 19, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 1, 2024
Mar 1, 2024
Mar 1, 2024
Feb 29, 2024
Feb 29, 2024
Feb 29, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 26, 2024
Feb 22, 2024
Feb 22, 2024
Feb 22, 2024
Feb 22, 2024
Feb 22, 2024
Feb 22, 2024
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 19, 2023
Oct 19, 2023
Oct 19, 2023
Oct 19, 2023
Oct 18, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 13, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Aug 24, 2023
Aug 24, 2023
Aug 24, 2023
Aug 24, 2023
Aug 21, 2023
Aug 21, 2023
Aug 21, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 7, 2023
Aug 7, 2023
Aug 7, 2023
Jun 20, 2023
Jun 20, 2023
Jun 20, 2023
Jun 14, 2023
Jun 14, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
May 16, 2023
May 12, 2023
May 12, 2023
May 12, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
May 9, 2023
Apr 17, 2023
Apr 17, 2023
Apr 17, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Feb 23, 2023
Feb 23, 2023
Feb 23, 2023
Feb 20, 2023
Feb 20, 2023
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Aug 30, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Jul 25, 2022
Jul 25, 2022
Jul 25, 2022
Jul 25, 2022
Jul 14, 2022
Jul 14, 2022
Jul 14, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 4, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Apr 21, 2022
Apr 21, 2022
Apr 21, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Apr 14, 2022
Dec 8, 2021
Dec 8, 2021
Dec 8, 2021
Dec 8, 2021
Nov 29, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Mar 8, 2021
Jan 28, 2021
Jan 11, 2021
Jan 11, 2021
Jan 11, 2021
Jan 11, 2021
Oct 23, 2020
Oct 1, 2020
Oct 1, 2020
Oct 1, 2020
Oct 1, 2020
Sep 10, 2020
Sep 10, 2020
Sep 10, 2020
Sep 10, 2020
Sep 10, 2020
Feb 4, 2020
Feb 4, 2020
Feb 4, 2020
Feb 4, 2020
Feb 4, 2020
Oct 17, 2019
Oct 17, 2019
Oct 10, 2019
Jul 18, 2019
Jul 12, 2019
Jan 23, 2019
Jan 17, 2019
Jan 17, 2019
Jan 17, 2019
Jan 17, 2019
Nov 16, 2018
Nov 16, 2018
Nov 13, 2018
Nov 13, 2018
Nov 13, 2018
Nov 13, 2018
Nov 13, 2018
Nov 13, 2018
Nov 13, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Jun 27, 2018
May 8, 2018
Apr 25, 2018
Apr 25, 2018
Apr 17, 2018
Apr 17, 2018
Apr 4, 2018
Jan 26, 2018
Jul 31, 2017
Jun 27, 2017
Apr 10, 2017
Mar 23, 2017
Mar 23, 2017
Dec 15, 2016
Dec 14, 2016
Dec 14, 2016
Dec 14, 2016
Nov 21, 2016
Nov 8, 2016
Oct 31, 2016
Oct 31, 2016
Oct 31, 2016
Oct 31, 2016
Oct 31, 2016
Oct 31, 2016
Oct 27, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016
Sep 26, 2016