Patent No. EP3617479 (titled "Geared Gas Turbine Engine With Reduced Oil Tank Size") was filed by Raytheon on Jan 2, 2015. The application was issued on Apr 26, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| SAFRAN AIRCRAFT ENGINES | Jan 26, 2024 | REGIMBEAU |
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 17, 2026
Apr 17, 2026
Jan 13, 2026
Jan 13, 2026
Jan 6, 2026
Jan 6, 2026
Jan 6, 2026
Dec 3, 2025
Nov 27, 2025
Nov 25, 2025
Nov 21, 2025
Nov 20, 2025
Nov 20, 2025
Nov 20, 2025
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
Oct 25, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Jun 18, 2024
Jun 10, 2024
Jun 10, 2024
Jun 10, 2024
Jun 10, 2024
Jun 10, 2024
Feb 9, 2024
Feb 9, 2024
Feb 1, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Jan 26, 2024
Oct 4, 2023
May 10, 2023
Mar 30, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 11, 2021
Nov 11, 2021
Nov 11, 2021
Nov 11, 2021
Nov 11, 2021
Oct 12, 2021
Oct 12, 2021
Oct 6, 2021
Feb 19, 2021
Feb 8, 2021
Feb 8, 2021
Jan 18, 2021
Dec 21, 2020
Dec 18, 2020
Dec 18, 2020
Dec 18, 2020
Dec 10, 2020
Dec 10, 2020
Dec 10, 2020
Dec 10, 2020
Dec 10, 2020
Dec 10, 2020
Dec 10, 2020
Sep 30, 2020
Sep 4, 2020
Sep 4, 2020
Mar 9, 2020
Feb 5, 2020
Jan 21, 2020
Jan 15, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Dec 13, 2019
Dec 13, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 22, 2019
Oct 20, 2015