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The patent EP3409940 was granted to General Electric on Aug 24, 2022. The application was filed on May 30, 2017 under application number EP17382312A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| WOBBEN PROPERTIES | May 22, 2023 | EISENFUHR SPEISER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US2015028593 |
| OPPOSITION | DE10058076 |
| OPPOSITION | EP1990539 |
| OPPOSITION | EP3128170 |
| OPPOSITION | US2009047129 |
| OPPOSITION | US2009081041 |
| OPPOSITION | US2012282093 |
| OPPOSITION | WO2011035788 |
| SEARCH | EP1990539 |
| SEARCH | US2009081041 |
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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Sep 11, 2025
Sep 8, 2025
(Electronic) Receipt
Appeal
Sep 8, 2025
Sep 8, 2025
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Reply to appeal
Appeal
May 16, 2025
May 12, 2025
(Electronic) Receipt
Appeal
May 12, 2025
May 12, 2025
May 8, 2025
May 5, 2025
(Electronic) Receipt
Appeal
May 5, 2025
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Apr 24, 2025
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Mar 3, 2025
(Electronic) Receipt
Appeal
Mar 3, 2025
Mar 3, 2025
Notice of appeal
Appeal
Jan 3, 2025
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Means of redress
OPPO
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Sep 6, 2022
Jul 28, 2022
Decision to grant a European patent
Search/Exam
Jul 18, 2022
(Electronic) Receipt
Search/Exam
Jul 18, 2022
French translation of claims
Search/Exam
Jul 18, 2022
German translation of the claims
Search/Exam
Jul 18, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2022
Apr 28, 2022
Apr 28, 2022
Intention to grant (signatures)
Search/Exam
Apr 28, 2022
Text intended for grant (clean copy)
Search/Exam
Apr 28, 2022
Dec 10, 2021
(Electronic) Receipt
Search/Exam
Dec 10, 2021
Amended claims with annotations
Search/Exam
Dec 10, 2021
Amended claims with annotations
Search/Exam
Dec 10, 2021
Claims
Search/Exam
Dec 10, 2021
Claims
Search/Exam
Dec 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 10, 2021
Oct 7, 2021
Oct 4, 2021
(Electronic) Receipt
Search/Exam
Oct 4, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 4, 2021
Jun 1, 2021
Annex to the communication
Search/Exam
Jun 1, 2021
Communication from the Examining Division
Search/Exam
Mar 1, 2021
(Electronic) Receipt
Search/Exam
Mar 1, 2021
Amended claims with annotations
Search/Exam
Mar 1, 2021
Claims
Search/Exam
Mar 1, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 1, 2021
Oct 30, 2020
Annex to the communication
Search/Exam
Oct 30, 2020
Communication from the Examining Division
Search/Exam
Oct 27, 2020
Examination started
Search/Exam
Jan 21, 2020
Nov 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Submission concerning representation
Search/Exam
Nov 18, 2019
Nov 13, 2019
Jul 31, 2019
Jul 19, 2019
(Electronic) Receipt
Search/Exam
Jul 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 19, 2019
Jul 12, 2019
Jul 10, 2019
Jul 3, 2019
(Electronic) Receipt
Search/Exam
Jul 3, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 3, 2019
Jun 13, 2019
Jun 13, 2019
Jun 11, 2019
(Electronic) Receipt
Search/Exam
Jun 11, 2019
General enquiry
Search/Exam
Jun 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 4, 2019
(Electronic) Receipt
Search/Exam
Jun 4, 2019
(Electronic) Receipt
Search/Exam
Jun 4, 2019
Jun 4, 2019
Amended claims with annotations
Search/Exam
Jun 4, 2019
Jun 4, 2019
Amended description with annotations
Search/Exam
Jun 4, 2019
Amendments received before examination
Search/Exam
Jun 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 4, 2019
Dec 10, 2018
Nov 7, 2018
Notification of forthcoming publication
Search/Exam
Nov 15, 2017
Nov 15, 2017
European search opinion
Search/Exam
Nov 15, 2017
European search report
Search/Exam
Nov 15, 2017
Information on Search Strategy
Search/Exam
Nov 8, 2017
Search started
Search/Exam
Jul 21, 2017
Communication to designated inventor
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Jul 21, 2017
Communication to designated inventor
Search/Exam
Jul 21, 2017
Communication to designated inventor
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Jul 21, 2017
Communication to designated inventor
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Jul 21, 2017
Communication to designated inventor
Search/Exam
Jul 21, 2017
Communication to designated inventor
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Jun 22, 2017
May 30, 2017
Abstract
Search/Exam
May 30, 2017
May 30, 2017
Annex
Search/Exam
May 30, 2017
Annex
Search/Exam
May 30, 2017
Claims
Search/Exam
May 30, 2017
Description
Search/Exam
May 30, 2017
Designation of inventor
Search/Exam
May 30, 2017
Drawings
Search/Exam
May 30, 2017
Request for grant of a European patent
Search/Exam