The patent EP3034839 was granted to Rolls Royce on Dec 14, 2022. The application was originally filed on Dec 3, 2015 under application number EP15197804A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US2011023444 |
| OPPOSITION | US2010089026 |
| OPPOSITION | US2011023444 |
| OPPOSITION | US2013283811 |
| OPPOSITION | US5121598 |
| SEARCH | EP0953749 |
| SEARCH | GB2282186 |
| SEARCH | GB2501198 |
| SEARCH | US2010263348 |
| SEARCH | US2013036738 |
| SEARCH | US5241814 |
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Date
Description
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Nov 17, 2022
Nov 17, 2022
Nov 11, 2022
Nov 9, 2022
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Sep 2, 2022
Sep 2, 2022
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Aug 25, 2022
Jul 27, 2022
Jul 27, 2022
Jul 22, 2022
(Electronic) Receipt
Appeal
Jul 22, 2022
Jul 22, 2022
Jul 22, 2022
Withdrawal of an appeal
Appeal
May 31, 2022
May 31, 2022
May 23, 2022
(Electronic) Receipt
Appeal
May 23, 2022
May 23, 2022
Notice of appeal
Appeal
May 5, 2022
May 5, 2022
May 5, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
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Mar 14, 2022
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Means of redress
OPPO
Mar 14, 2022
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Mar 16, 2020
Feb 6, 2020
Decision to grant a European patent
Search/Exam
Jan 24, 2020
Jan 20, 2020
(Electronic) Receipt
Search/Exam
Jan 20, 2020
French translation of claims
Search/Exam
Jan 20, 2020
German translation of the claims
Search/Exam
Jan 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 20, 2020
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Nov 4, 2019
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Nov 4, 2019
Intention to grant (signatures)
Search/Exam
Nov 4, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 4, 2019
Jan 8, 2019
(Electronic) Receipt
Search/Exam
Jan 8, 2019
Amended claims with annotations
Search/Exam
Jan 8, 2019
Amended description with annotations
Search/Exam
Jan 8, 2019
Claims
Search/Exam
Jan 8, 2019
Description
Search/Exam
Jan 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 8, 2019
Oct 23, 2018
Annex to the communication
Search/Exam
Oct 23, 2018
Communication from the Examining Division
Search/Exam
Oct 15, 2018
Examination started
Search/Exam
Jul 16, 2018
Dec 12, 2016
(Electronic) Receipt
Search/Exam
Dec 12, 2016
Dec 12, 2016
Amended claims with annotations
Search/Exam
Dec 12, 2016
Dec 12, 2016
Amended description with annotations
Search/Exam
Dec 12, 2016
Amendments received before examination
Search/Exam
Dec 12, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 27, 2016
May 25, 2016
Notification of forthcoming publication
Search/Exam
May 12, 2016
May 12, 2016
European search opinion
Search/Exam
May 12, 2016
European search report
Search/Exam
May 12, 2016
Information on Search Strategy
Search/Exam
May 2, 2016
Search started
Search/Exam
Mar 3, 2016
Feb 18, 2016
Letter which had not been notified
Search/Exam
Jan 26, 2016
Communication to designated inventor
Search/Exam
Jan 26, 2016
Communication to designated inventor
Search/Exam
Jan 26, 2016
Communication to designated inventor
Search/Exam
Dec 11, 2015
Letter concerning the priority
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Dec 11, 2015
Priority document
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Dec 3, 2015
Abstract
Search/Exam
Dec 3, 2015
Dec 3, 2015
Claims
Search/Exam
Dec 3, 2015
Description
Search/Exam
Dec 3, 2015
Designation of inventor
Search/Exam
Dec 3, 2015
Drawings
Search/Exam
Dec 3, 2015
Request for grant of a European patent
Search/Exam