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The patent EP3394398 was granted to Safran Aircraft Engines on Apr 27, 2022. The application was originally filed on Dec 21, 2016 under application number EP16831499A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DE4411679 |
| INTERNATIONAL-SEARCH-REPORT | EP2022942 |
| INTERNATIONAL-SEARCH-REPORT | FR2994708 |
| INTERNATIONAL-SEARCH-REPORT | GB2482247 |
| INTERNATIONAL-SEARCH-REPORT | WO2014055499 |
| INTERNATIONAL-SEARCH-REPORT | WO2014196987 |
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 5, 2025
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Jul 28, 2025
(Electronic) Receipt
Appeal
Jul 28, 2025
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(Electronic) Receipt
Appeal
May 26, 2025
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Notice of appeal
Appeal
Mar 26, 2025
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Means of redress
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Mar 31, 2022
Decision to grant a European patent
Search/Exam
Mar 17, 2022
(Electronic) Receipt
Search/Exam
Mar 17, 2022
English translation of the claims
Search/Exam
Mar 17, 2022
Filing of the translations of the claims
Search/Exam
Mar 17, 2022
German translation of the claims
Search/Exam
Nov 29, 2021
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Intention to grant (signatures)
Search/Exam
Nov 29, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 29, 2021
Jul 7, 2021
(Electronic) Receipt
Search/Exam
Jul 7, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2021
Mar 10, 2021
Annex to the communication
Search/Exam
Mar 10, 2021
Communication from the Examining Division
Search/Exam
Feb 24, 2021
(Electronic) Receipt
Search/Exam
Feb 24, 2021
Amended claims with annotations
Search/Exam
Feb 24, 2021
Claims
Search/Exam
Feb 24, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 24, 2021
Nov 20, 2020
Annex to the communication
Search/Exam
Nov 20, 2020
Communication from the Examining Division
Search/Exam
Nov 16, 2020
Examination started
Search/Exam
Oct 4, 2018
Aug 3, 2018
Jul 28, 2018
Priority search results copy provided by EPO
Search/Exam
Jul 27, 2018
Communication to designated inventor
Search/Exam
Jul 27, 2018
Communication to designated inventor
Search/Exam
Jul 27, 2018
Communication to designated inventor
Search/Exam
Jul 27, 2018
Communication to designated inventor
Search/Exam
Jul 27, 2018
Communication to designated inventor
Search/Exam
Jul 16, 2018
Jun 27, 2018
(Electronic) Receipt
Search/Exam
Jun 27, 2018
Amendments received before examination
Search/Exam
Jun 27, 2018
Request for entry into the European phase
Search/Exam
May 4, 2018
Information on entry into European phase
Search/Exam
Jul 18, 2017
Jun 29, 2017
Copy of the international search report
Search/Exam
Jun 29, 2017
Copy of the international search report
Search/Exam
Jun 29, 2017
Published international application - A1
Search/Exam
Mar 24, 2017
ISR: cited documents
PCTISA
Mar 24, 2017
Mar 23, 2017
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Feb 7, 2017
Jan 26, 2017
Dec 21, 2016
Abstract
PCTISA
Dec 21, 2016
Claims
PCTISA
Dec 21, 2016
Description
PCTISA
Dec 21, 2016
Drawings
PCTISA