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The patent EP3768950 was granted to Safran Aircraft Engines on Feb 9, 2022. The application was originally filed on Mar 19, 2019 under application number EP19718432A. 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 | FR3028574 |
| INTERNATIONAL-SEARCH-REPORT | CN104314619B |
| INTERNATIONAL-SEARCH-REPORT | US2006099078 |
| INTERNATIONAL-SEARCH-REPORT | US2011064580 |
| INTERNATIONAL-SEARCH-REPORT | US2014205441 |
| INTERNATIONAL-SEARCH-REPORT | WO2015130381 |
| OPPOSITION | US2015267545 |
| OPPOSITION | US5277548 |
| OPPOSITION | WO2016139416 |
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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Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Jul 22, 2025
Jul 16, 2025
Refund of fees
Search/Exam
Jul 15, 2025
Jul 15, 2025
Jul 7, 2025
(Electronic) Receipt
Appeal
Jul 7, 2025
Jul 7, 2025
Withdrawal of an appeal
Appeal
Jul 3, 2025
Jun 2, 2025
Jun 2, 2025
May 26, 2025
(Electronic) Receipt
Appeal
May 26, 2025
May 26, 2025
Notice of appeal
Appeal
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
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Mar 26, 2025
Means of redress
OPPO
Mar 26, 2025
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Nov 9, 2022
Nov 9, 2022
Nov 9, 2022
Feb 22, 2022
Jan 13, 2022
Decision to grant a European patent
Search/Exam
Dec 22, 2021
(Electronic) Receipt
Search/Exam
Dec 22, 2021
English translation of the claims
Search/Exam
Dec 22, 2021
Filing of the translations of the claims
Search/Exam
Dec 22, 2021
German translation of the claims
Search/Exam
Dec 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2021
Oct 25, 2021
Oct 25, 2021
Intention to grant (signatures)
Search/Exam
Oct 25, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 25, 2021
Sep 28, 2021
Examination started
Search/Exam
Jan 13, 2021
Dec 2, 2020
(Electronic) Receipt
Search/Exam
Dec 2, 2020
Dec 2, 2020
Amended description with annotations
Search/Exam
Dec 2, 2020
Amendments received before examination
Search/Exam
Dec 2, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 27, 2020
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 23, 2020
Communication to designated inventor
Search/Exam
Oct 20, 2020
Priority search results copy provided by EPO
Search/Exam
Oct 16, 2020
(Electronic) Receipt
Search/Exam
Oct 16, 2020
Request for entry into the European phase
Search/Exam
Oct 5, 2020
Jul 31, 2020
Information on entry into European phase
Search/Exam
Oct 24, 2019
Sep 26, 2019
Copy of the international search report
Search/Exam
Sep 26, 2019
Copy of the international search report
Search/Exam
Sep 26, 2019
Published international application - A1
Search/Exam
May 23, 2019
ISR: cited documents
PCTISA
May 23, 2019
May 23, 2019
May 23, 2019
May 23, 2019
May 3, 2019
Apr 24, 2019
Abstract
PCTISA
Apr 24, 2019
Claims
PCTISA
Apr 24, 2019
Description
PCTISA
Apr 24, 2019
Drawings
PCTISA
Apr 24, 2019