Patent No. EP3798513 (titled "Heating Device") was filed by Kofen Forschungs UND Entwicklungsgesellschaft on Sep 24, 2020. The application was issued on Jun 1, 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 |
|---|---|---|
| FROLING HEIZKESSEL UND BEHALTERBAU | Feb 17, 2023 | SONN PATENTANWALTE |
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 30, 2026
Jan 30, 2026
Jan 28, 2026
Jan 28, 2026
Jan 24, 2026
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Oct 30, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Apr 15, 2025
Apr 9, 2025
Apr 9, 2025
Apr 9, 2025
Dec 13, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Dec 9, 2024
Oct 28, 2024
Oct 28, 2024
Oct 8, 2024
Oct 8, 2024
Oct 8, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Jul 10, 2024
May 24, 2024
May 15, 2024
May 13, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 7, 2024
May 7, 2024
May 7, 2024
Nov 2, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Oct 31, 2023
Sep 19, 2023
Sep 4, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Jul 17, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Mar 15, 2023
Mar 15, 2023
Feb 27, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Jun 14, 2022
May 6, 2022
Apr 20, 2022
Apr 20, 2022
Apr 20, 2022
Apr 20, 2022
Apr 20, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 4, 2022
Nov 5, 2021
Oct 4, 2021
Oct 4, 2021
Sep 22, 2021
Sep 22, 2021
Sep 22, 2021
Sep 22, 2021
Sep 21, 2021
Sep 21, 2021
Sep 21, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Sep 15, 2021
Jul 26, 2021
Jul 20, 2021
Apr 7, 2021
Mar 3, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 14, 2021
Nov 17, 2020
Oct 19, 2020
Oct 19, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020