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The patent EP3276439 was granted to Raytheon on Mar 26, 2025. The application was filed on Jul 28, 2017 under application number EP17183873A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| SAFRAN AIRCRAFT ENGINES | Sep 1, 2022 | BREVALEX | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP1420165 |
| OPPOSITION | EP2192593 |
| OPPOSITION | EP2549415 |
| OPPOSITION | EP2853971 |
| OPPOSITION | US2004230384 |
| OPPOSITION | US2007194772 |
| OPPOSITION | US6757665 |
| OPPOSITION | WO2011124963 |
| OPPOSITION | WO2016146967 |
| SEARCH | EP2549415 |
| SEARCH | EP2853971 |
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.
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Description
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OPPO
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Description
OPPO
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
Search/Exam
Oct 22, 2021
Filing of the translations of the claims
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French translation of claims
Search/Exam
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Amended claims with annotations
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Claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
Search/Exam
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Text intended for grant (clean copy)
Search/Exam
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Examination started
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(Electronic) Receipt
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Apr 30, 2021
Enquiry as to the processing of the file
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Apr 30, 2021
Letter accompanying subsequently filed items
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Authorisation
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Annexes in respect of a client data request
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Annexes in respect of a client data request
Search/Exam
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(Electronic) Receipt
Search/Exam
Jul 31, 2018
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Amended claims with annotations
Search/Exam
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Amended description with annotations
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Jul 31, 2018
Amendments received before examination
Search/Exam
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Letter accompanying subsequently filed items
Search/Exam
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Notification of forthcoming publication
Search/Exam
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European search opinion
Search/Exam
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European search report
Search/Exam
Dec 14, 2017
Information on Search Strategy
Search/Exam
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Search started
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Communication to designated inventor
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Jul 28, 2017
Abstract
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Claims
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Jul 28, 2017
Description
Search/Exam
Jul 28, 2017
Designation of inventor
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Jul 28, 2017
Drawings
Search/Exam
Jul 28, 2017
Request for grant of a European patent
Search/Exam