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The patent EP3396304 was granted to Pratt & Whitney Canada on Oct 19, 2022. The application was filed on Apr 24, 2018 under application number EP18169088A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 | Jul 18, 2023 | BREVALEX | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2015139798 |
| EXAMINATION | FR2344022 |
| EXAMINATION | US4700133 |
| OPPOSITION | EP2260278 |
| OPPOSITION | EP2400307 |
| OPPOSITION | EP2876046 |
| OPPOSITION | US2004227638 |
| OPPOSITION | US2010321006 |
| OPPOSITION | US2012007590 |
| OPPOSITION | US2013141082 |
| OPPOSITION | US2015301130 |
| OPPOSITION | US2919322 |
| OPPOSITION | US3586964 |
| OPPOSITION | US3626226 |
| OPPOSITION | US3710623 |
| OPPOSITION | US4647892 |
| OPPOSITION | US5939880 |
| SEARCH | EP2400307 |
| SEARCH | EP2876046 |
| SEARCH | US3626226 |
| SEARCH | US3710623 |
| SEARCH | US4647892 |
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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Means of redress
OPPO
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Nov 2, 2022
Sep 22, 2022
Decision to grant a European patent
Search/Exam
Sep 6, 2022
(Electronic) Receipt
Search/Exam
Sep 6, 2022
Filing of the translations of the claims
Search/Exam
Sep 6, 2022
French translation of claims
Search/Exam
Sep 6, 2022
German translation of the claims
Search/Exam
Sep 6, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 26, 2022
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Intention to grant (signatures)
Search/Exam
Apr 26, 2022
Text intended for grant (clean copy)
Search/Exam
Apr 26, 2022
Jul 22, 2021
(Electronic) Receipt
Search/Exam
Jul 22, 2021
Amended description with annotations
Search/Exam
Jul 22, 2021
Description
Search/Exam
Jul 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 22, 2021
May 21, 2021
May 18, 2021
(Electronic) Receipt
Search/Exam
May 18, 2021
Jan 12, 2021
Annex to the communication
Search/Exam
Jan 12, 2021
Communication from the Examining Division
Search/Exam
Sep 21, 2020
(Electronic) Receipt
Search/Exam
Sep 21, 2020
Amended claims with annotations
Search/Exam
Sep 21, 2020
Amended description with annotations
Search/Exam
Sep 21, 2020
Claims
Search/Exam
Sep 21, 2020
Description
Search/Exam
Sep 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2020
Jul 23, 2020
Jul 17, 2020
(Electronic) Receipt
Search/Exam
Jul 17, 2020
Mar 9, 2020
Annex to the communication
Search/Exam
Mar 9, 2020
Communication from the Examining Division
Search/Exam
Mar 2, 2020
Examination started
Search/Exam
Apr 30, 2019
(Electronic) Receipt
Search/Exam
Apr 30, 2019
Apr 30, 2019
Amended claims with annotations
Search/Exam
Apr 30, 2019
Apr 30, 2019
Amended description with annotations
Search/Exam
Apr 30, 2019
Amendments received before examination
Search/Exam
Apr 30, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 6, 2018
Oct 4, 2018
Notification of forthcoming publication
Search/Exam
Jul 4, 2018
Jun 26, 2018
Jun 15, 2018
Communication to designated inventor
Search/Exam
Jun 15, 2018
Communication to designated inventor
Search/Exam
Jun 14, 2018
Jun 14, 2018
European search opinion
Search/Exam
Jun 14, 2018
European search report
Search/Exam
Jun 14, 2018
Information on Search Strategy
Search/Exam
Jun 5, 2018
Search started
Search/Exam
Apr 24, 2018
Abstract
Search/Exam
Apr 24, 2018
Apr 24, 2018
Claims
Search/Exam
Apr 24, 2018
Description
Search/Exam
Apr 24, 2018
Designation of inventor
Search/Exam
Apr 24, 2018
Drawings
Search/Exam
Apr 24, 2018
Request for grant of a European patent
Search/Exam