The patent EP3712500 was granted to Safran Aircraft Engines on Aug 11, 2021. The application was originally filed on Mar 19, 2020 under application number EP20164349A. The patent is currently recorded with a legal status of "Revoked".

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 | FR2832492 |
| OPPOSITION | DE10310184 |
| OPPOSITION | US2007158946 |
| OPPOSITION | US2010119395 |
| OPPOSITION | US2875779 |
| OPPOSITION | US3727636 |
| OPPOSITION | US4491272 |
| OPPOSITION | US4655912 |
| OPPOSITION | US5944302 |
| SEARCH | CN205806301U |
| SEARCH | FR2832492 |
| SEARCH | US2003070711 |
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Aug 24, 2021
Jul 15, 2021
Decision to grant a European patent
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Jul 5, 2021
(Electronic) Receipt
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Jul 5, 2021
English translation of the claims
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Jul 5, 2021
Filing of the translations of the claims
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Jul 5, 2021
German translation of the claims
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Jul 5, 2021
Letter accompanying subsequently filed items
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May 14, 2021
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Intention to grant (signatures)
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Apr 16, 2021
Text intended for grant (clean copy)
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Apr 16, 2021
Mar 31, 2021
Examination started
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Mar 22, 2021
(Electronic) Receipt
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Mar 22, 2021
Letter concerning fees and payments
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Sep 28, 2020
Aug 26, 2020
Notification of forthcoming publication
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Aug 19, 2020
Refund of fees
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Aug 10, 2020
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European search opinion
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Aug 10, 2020
European search report
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Aug 10, 2020
Information on Search Strategy
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Aug 5, 2020
Priority search results copy provided by EPO
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Jul 21, 2020
Search started
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Jul 10, 2020
Letter accompanying subsequently filed items
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Jul 10, 2020
Letter concerning the priority
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Jul 10, 2020
Priority document
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Communication to designated inventor
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Communication to designated inventor
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Apr 8, 2020
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Letter accompanying subsequently filed items
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Apr 2, 2020
Mar 19, 2020
Abstract
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Mar 19, 2020
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Claims
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Mar 19, 2020
Description
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Mar 19, 2020
Designation of inventor
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Mar 19, 2020
Drawings
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Mar 19, 2020
Request for grant of a European patent
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