Patent No. EP3727234 (titled "Ostomy Appliance With Angular Leakage Detection") was filed by Coloplast on Dec 20, 2018. The application was issued on Jan 26, 2022.

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 |
|---|---|---|
| HOLLISTER INCORPORATED | Oct 18, 2022 | FRKELLY |
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
Mar 2, 2026
Mar 2, 2026
Feb 25, 2026
Feb 25, 2026
Feb 16, 2026
Aug 26, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Apr 24, 2025
Apr 16, 2025
Apr 16, 2025
Apr 16, 2025
Apr 16, 2025
Feb 27, 2025
Feb 27, 2025
Feb 17, 2025
Feb 17, 2025
Feb 17, 2025
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Nov 5, 2024
Oct 29, 2024
Oct 25, 2024
Oct 25, 2024
Oct 25, 2024
Sep 10, 2024
Sep 10, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Sep 5, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Dec 19, 2023
Mar 22, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Nov 10, 2022
Nov 10, 2022
Oct 26, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Feb 8, 2022
Jan 7, 2022
Nov 30, 2021
Nov 11, 2021
Nov 11, 2021
Nov 11, 2021
Nov 11, 2021
Oct 27, 2021
Oct 27, 2021
Oct 27, 2021
Oct 27, 2021
Oct 27, 2021
Sep 15, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Feb 9, 2021
Oct 8, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Sep 30, 2020
Sep 9, 2020
Sep 3, 2020
Jul 31, 2020
Jul 29, 2020
Jul 29, 2020
Jul 29, 2020
Jul 29, 2020
Jul 29, 2020
Jun 29, 2020
Jun 29, 2020
Jun 16, 2020
Jun 16, 2020
May 4, 2020
Jan 8, 2020
Jan 8, 2020
Jan 8, 2020
Jan 8, 2020
Jan 8, 2020
Nov 11, 2019
Oct 29, 2019
Oct 23, 2019
Oct 17, 2019
Oct 17, 2019
Oct 17, 2019
Oct 17, 2019
Oct 17, 2019
Oct 17, 2019
Jul 18, 2019
Jul 18, 2019
Jul 18, 2019
Jun 27, 2019
Jun 27, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Mar 4, 2019
Jan 29, 2019
Jan 10, 2019
Jan 10, 2019
Jan 10, 2019
Jan 10, 2019
Jan 10, 2019