Patent No. EP3696405 (titled "Operating State Evaluation Method And Operating State Evaluation Device") was filed by Mitsubishi Heavy Industries on Nov 27, 2019. The application was issued on Mar 22, 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 |
|---|---|---|
| SIEMENS GAMESA RENEWABLE ENERGY | Dec 20, 2023 | SGRE ASSOCIATION |
| SIEMENS GAMESA RENEWABLE ENERGY DEUTSCHLAND | Dec 20, 2023 | SGRE ASSOCIATION |
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
Dec 17, 2025
Dec 12, 2025
Dec 12, 2025
Dec 12, 2025
Oct 30, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Aug 12, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Aug 6, 2025
Jul 30, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 11, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 16, 2025
Jun 16, 2025
Jun 10, 2025
Jun 10, 2025
Jun 10, 2025
Jun 10, 2025
Jun 10, 2025
Jun 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Mar 20, 2025
Feb 25, 2025
Feb 21, 2025
Feb 21, 2025
Feb 21, 2025
Jan 23, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 19, 2025
Jan 9, 2025
Jan 8, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 2, 2025
Jan 2, 2025
Jan 2, 2025
Dec 19, 2024
Dec 16, 2024
Dec 16, 2024
Dec 16, 2024
Sep 30, 2024
Sep 30, 2024
Sep 30, 2024
Sep 30, 2024
Sep 30, 2024
Aug 7, 2024
Aug 7, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
May 21, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
Jan 16, 2024
Jan 16, 2024
Jan 3, 2024
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Apr 4, 2023
Feb 23, 2023
Feb 10, 2023
Feb 10, 2023
Feb 10, 2023
Feb 10, 2023
Feb 10, 2023
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Aug 18, 2021
Aug 18, 2021
Aug 13, 2021
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Aug 24, 2020
Jul 22, 2020
Jun 22, 2020
Jun 22, 2020
Jun 22, 2020
Jun 22, 2020
Jun 10, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Dec 16, 2019
Dec 3, 2019
Dec 3, 2019
Nov 27, 2019
Nov 27, 2019
Nov 27, 2019
Nov 27, 2019
Nov 27, 2019
Nov 27, 2019
Nov 27, 2019