Patent No. EP3948267 (titled "Methods And Systems For Determining A Target Gas Concentration In A Fluid Environment") was filed by H2Scan on Apr 6, 2020. The application was issued on Mar 26, 2025.

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 |
|---|---|---|
| SCHOPPE ZIMMERM STOCK ZINKLER SCHENK&PARTNERMBB STOCKELER ZIMMERMANN ZINKLER SCHENK BURGER HERSINA SCHAIRER KONIG PFITZNER | Nov 17, 2025 | STOCKELER |
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
Apr 8, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Apr 1, 2026
Dec 1, 2025
Dec 1, 2025
Nov 19, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Mar 4, 2025
Feb 14, 2025
Feb 6, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 23, 2025
Jan 15, 2025
Jan 15, 2025
Jan 15, 2025
Jan 15, 2025
Sep 19, 2024
Sep 19, 2024
Sep 19, 2024
Sep 19, 2024
Sep 19, 2024
Sep 19, 2024
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Sep 18, 2023
Sep 13, 2023
Sep 13, 2023
May 3, 2023
May 3, 2023
Apr 26, 2023
Apr 6, 2023
Apr 6, 2023
Apr 6, 2023
Apr 6, 2023
Apr 6, 2023
Apr 6, 2023
Apr 6, 2023
Oct 5, 2022
Sep 15, 2022
Sep 15, 2022
Sep 15, 2022
Sep 15, 2022
Sep 2, 2022
Sep 2, 2022
Sep 2, 2022
Jul 22, 2022
Mar 3, 2022
Mar 3, 2022
Mar 3, 2022
Jan 12, 2022
Nov 12, 2021
Nov 9, 2021
Oct 28, 2021
Oct 28, 2021
Oct 28, 2021
Oct 11, 2021
Aug 13, 2021
Mar 4, 2021
Oct 26, 2020
Oct 8, 2020
Oct 8, 2020