Patent No. EP3994020 (titled "A Fuel Gas System For A Vehicle") was filed by Volvo Truck on Jul 2, 2019. The application was issued on Jun 7, 2023.

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.
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 13, 2026
Jan 13, 2026
Jan 5, 2026
Jan 5, 2026
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 4, 2025
Jul 28, 2025
Jul 23, 2025
Jul 23, 2025
Jul 23, 2025
Jun 16, 2025
Jun 4, 2025
Jun 4, 2025
Jun 4, 2025
May 9, 2025
May 6, 2025
Apr 30, 2025
Apr 30, 2025
Apr 30, 2025
Apr 25, 2025
Apr 25, 2025
Apr 25, 2025
Apr 25, 2025
Apr 25, 2025
Apr 25, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Sep 25, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Jul 2, 2024
Jul 2, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 26, 2024
Jun 26, 2024
Jun 26, 2024
Jun 20, 2024
Jun 20, 2024
Jun 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 12, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Feb 7, 2024
Feb 7, 2024
Jun 20, 2023
May 11, 2023
May 4, 2023
May 4, 2023
Apr 28, 2023
Apr 28, 2023
Apr 28, 2023
Apr 25, 2023
Apr 25, 2023
Apr 25, 2023
Apr 25, 2023
Apr 25, 2023
Apr 25, 2023
Mar 1, 2023
Mar 1, 2023
Mar 1, 2023
Mar 1, 2023
Mar 1, 2023
Mar 1, 2023
Feb 1, 2023
Apr 13, 2022
Feb 9, 2022
Jan 18, 2022
Jan 18, 2022
Jan 17, 2022
Nov 12, 2021
Jan 7, 2021
Jan 7, 2021
Sep 24, 2019
Sep 24, 2019
Sep 18, 2019
Sep 18, 2019
Sep 18, 2019
Sep 18, 2019
Jul 29, 2019
Jul 26, 2019
Jul 23, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019