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The patent EP3314076 was granted to ENO Energy Systems on Jul 30, 2025. The application was originally filed on Jun 23, 2016 under application number EP16731606A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 | Opposition Status |
|---|---|---|---|
| SIEMENS GAMESA RENEWABLE ENERGY | Jun 2, 2021 | SGRE ASSOCIATION | ADMISSIBLE |
| SUZLON ENERGY | Jun 2, 2021 | - | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP2824257 |
| INTERNATIONAL-SEARCH-REPORT | FR2394741 |
| INTERNATIONAL-SEARCH-REPORT | GB2459874 |
| INTERNATIONAL-SEARCH-REPORT | WO2004083633 |
| INTERNATIONAL-SEARCH-REPORT | WO2004090263 |
| OPPOSITION | DE102015110344 |
| OPPOSITION | EP2354379 |
| OPPOSITION | EP2824257 |
| OPPOSITION | FR2394741 |
| OPPOSITION | GB2459874 |
| OPPOSITION | WO2004083633 |
| OPPOSITION | WO2004090263 |
| OPPOSITION | WO2014086170 |
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
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Jul 3, 2025
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Mar 14, 2025
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Mar 7, 2025
Refund of fees
Search/Exam
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 27, 2025
Feb 26, 2025
(Electronic) Receipt
Appeal
Feb 26, 2025
Feb 26, 2025
Withdrawal of an appeal
Appeal
Oct 23, 2024
Oct 23, 2024
Oct 18, 2024
(Electronic) Receipt
Appeal
Oct 18, 2024
Oct 18, 2024
Jul 22, 2024
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Mar 3, 2024
Sep 27, 2023
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(Electronic) Receipt
Appeal
Sep 21, 2023
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Sep 21, 2023
Reply to appeal
Appeal
May 23, 2023
May 23, 2023
May 2, 2023
(Electronic) Receipt
Appeal
May 2, 2023
May 2, 2023
Mar 9, 2023
Mar 1, 2023
(Electronic) Receipt
Appeal
Mar 1, 2023
Mar 1, 2023
Notice of appeal
Appeal
Jan 9, 2023
Dec 29, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
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Means of redress
OPPO
Dec 23, 2022
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International publication (Pamphlet)
Search/Exam
Jun 2, 2021
Jun 2, 2021
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Jun 2, 2021
Sep 14, 2020
Aug 6, 2020
Decision to grant a European patent
Search/Exam
Jul 23, 2020
(Electronic) Receipt
Search/Exam
Jul 23, 2020
English translation of the claims
Search/Exam
Jul 23, 2020
Filing of the translations of the claims
Search/Exam
Jul 23, 2020
French translation of claims
Search/Exam
Jul 23, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 30, 2020
Apr 30, 2020
Apr 30, 2020
Intention to grant (signatures)
Search/Exam
Apr 30, 2020
Text intended for grant (clean copy)
Search/Exam
Apr 30, 2020
Apr 2, 2020
(Electronic) Receipt
Search/Exam
Apr 2, 2020
Amended claims with annotations
Search/Exam
Apr 2, 2020
Amended description with annotations
Search/Exam
Apr 2, 2020
Claims
Search/Exam
Apr 2, 2020
Description
Search/Exam
Apr 2, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 2, 2020
Dec 16, 2019
Annex to the communication
Search/Exam
Dec 16, 2019
Communication from the Examining Division
Search/Exam
May 31, 2019
(Electronic) Receipt
Search/Exam
May 31, 2019
Letter accompanying subsequently filed items
Search/Exam
May 31, 2019
Feb 4, 2019
Annex to the communication
Search/Exam
Feb 4, 2019
Communication from the Examining Division
Search/Exam
Jan 29, 2019
Examination started
Search/Exam
Nov 2, 2018
Priority search results
Search/Exam
Nov 2, 2018
Oct 1, 2018
Jul 27, 2018
(Electronic) Receipt
Search/Exam
Jul 27, 2018
Jul 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 27, 2018
Reply to Written Opinion prepared by the EPO
Search/Exam
Apr 5, 2018
Feb 13, 2018
Feb 5, 2018
Communication to designated inventor
Search/Exam
Feb 5, 2018
Communication to designated inventor
Search/Exam
Feb 5, 2018
Communication to designated inventor
Search/Exam
Feb 5, 2018
Communication to designated inventor
Search/Exam
Feb 5, 2018
Communication to designated inventor
Search/Exam
Jan 10, 2018
(Electronic) Receipt
Search/Exam
Jan 10, 2018
Jan 10, 2018
Request for entry into the European phase
Search/Exam
Jan 8, 2018
Nov 6, 2017
Information on entry into European phase
Search/Exam
Mar 28, 2017
Notification of the recording of a change
Search/Exam
Jan 16, 2017
Dec 29, 2016
Copy of the international search report
Search/Exam
Dec 29, 2016
Copy of the international search report
Search/Exam
Dec 29, 2016
Published international application - A1
Search/Exam
Nov 23, 2016
Nov 23, 2016
Nov 23, 2016
Sep 1, 2016
Sep 1, 2016
Jul 9, 2016
Jul 6, 2016
Jul 6, 2016
Jul 1, 2016
Jun 23, 2016
(Electronic) Receipt
PCTRO
Jun 23, 2016
Abstract
PCTRO
Jun 23, 2016
Claims
PCTRO
Jun 23, 2016
Description
PCTRO
Jun 23, 2016
Jun 23, 2016
Drawings
PCTRO