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The patent EP2947335 was granted to Rolls Royce on Nov 16, 2022. The application was filed on Apr 24, 2015 under application number EP15165088A. 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 |
|---|---|---|---|
| ANSALDO ENERGIA SWITZERLAND | Apr 17, 2019 | STUDIO TORTA | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN201574782U |
| OPPOSITION | FR2704170 |
| OPPOSITION | JPH03208566 |
| OPPOSITION | US2524167 |
| OPPOSITION | US3126774 |
| OPPOSITION | US797078 |
| SEARCH | FR2704170 |
| SEARCH | JP2003265492 |
| SEARCH | JPH03208566 |
| SEARCH | US2006266114 |
| SEARCH | US3126774 |
| SEARCH | US3985465 |
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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Authorisation
OPPO
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Jul 30, 2018
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Decision to grant a European patent
Search/Exam
Jun 6, 2018
(Electronic) Receipt
Search/Exam
Jun 6, 2018
Filing of the translations of the claims
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Jun 6, 2018
French translation of claims
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Jun 6, 2018
German translation of the claims
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May 9, 2018
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Intention to grant (signatures)
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May 9, 2018
Text intended for grant (clean copy)
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May 9, 2018
Feb 26, 2018
Examination started
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Apr 20, 2016
(Electronic) Receipt
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Amended claims with annotations
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Apr 20, 2016
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Amended description with annotations
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Apr 20, 2016
Amendments received before examination
Search/Exam
Apr 20, 2016
Letter accompanying subsequently filed items
Search/Exam
Nov 30, 2015
Oct 28, 2015
Notification of forthcoming publication
Search/Exam
Oct 21, 2015
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European search opinion
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Oct 21, 2015
European search report
Search/Exam
Oct 7, 2015
Search started
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Jun 23, 2015
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Jun 15, 2015
May 4, 2015
Letter concerning the priority
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May 4, 2015
Priority document
Search/Exam
Apr 24, 2015
Abstract
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Apr 24, 2015
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Claims
Search/Exam
Apr 24, 2015
Description
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Apr 24, 2015
Designation of inventor
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Apr 24, 2015
Drawings
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Apr 24, 2015
Request for grant of a European patent
Search/Exam