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The patent EP3705705 was granted to Safran Aircraft Engines on Aug 25, 2021. The application was originally filed on Mar 5, 2020 under application number EP20161331A. 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 |
|---|---|
| DESCRIPTION | EP2518279 |
| DESCRIPTION | EP2554874 |
| DESCRIPTION | FR2987416 |
| DESCRIPTION | FR3041054 |
| DESCRIPTION | WO2010092263 |
| OPPOSITION | US2013004297 |
| OPPOSITION | US2013225353 |
| OPPOSITION | US2016215871 |
| OPPOSITION | US8484942 |
| SEARCH | EP2518279 |
| SEARCH | EP2554874 |
| SEARCH | US2013225353 |
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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Nov 3, 2025
Nov 3, 2025
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Nov 14, 2024
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Sep 9, 2024
(Electronic) Receipt
Appeal
Sep 9, 2024
Sep 9, 2024
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Jul 5, 2024
(Electronic) Receipt
Appeal
Jul 5, 2024
Jul 5, 2024
Notice of appeal
Appeal
May 7, 2024
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Means of redress
OPPO
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Sep 7, 2021
Jul 29, 2021
Decision to grant a European patent
Search/Exam
Jul 15, 2021
(Electronic) Receipt
Search/Exam
Jul 15, 2021
English translation of the claims
Search/Exam
Jul 15, 2021
Filing of the translations of the claims
Search/Exam
Jul 15, 2021
German translation of the claims
Search/Exam
Jul 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 1, 2021
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Apr 1, 2021
Intention to grant (signatures)
Search/Exam
Apr 1, 2021
Text intended for grant (clean copy)
Search/Exam
Apr 1, 2021
Feb 16, 2021
Examination started
Search/Exam
Jan 26, 2021
(Electronic) Receipt
Search/Exam
Jan 26, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 26, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Sep 14, 2020
Aug 12, 2020
Notification of forthcoming publication
Search/Exam
May 25, 2020
Letter concerning the priority
Search/Exam
May 25, 2020
Priority document
Search/Exam
Apr 29, 2020
Communication to designated inventor
Search/Exam
Apr 29, 2020
Communication to designated inventor
Search/Exam
Apr 29, 2020
Refund of fees
Search/Exam
Apr 23, 2020
Apr 23, 2020
European search opinion
Search/Exam
Apr 23, 2020
European search report
Search/Exam
Apr 23, 2020
Information on Search Strategy
Search/Exam
Apr 18, 2020
Priority search results copy provided by EPO
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Mar 5, 2020
Abstract
Search/Exam
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Claims
Search/Exam
Mar 5, 2020
Description
Search/Exam
Mar 5, 2020
Designation of inventor
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Mar 5, 2020
Drawings
Search/Exam
Mar 5, 2020
Priority search results
Search/Exam
Mar 5, 2020
Request for grant of a European patent
Search/Exam