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The patent EP3431357 was granted to Hitachi on Jan 25, 2023. The application was filed on May 18, 2012 under application number EP18188029A. 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 |
|---|---|---|---|
| BOMBARDIER TRANSPORTATION | Sep 22, 2020 | ALATIS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2009255641 |
| OPPOSITION | EP2110291 |
| OPPOSITION | EP2204309 |
| OPPOSITION | JP2006224781 |
| OPPOSITION | JP2010254091 |
| OPPOSITION | JPH01156167 |
| OPPOSITION | JPS5854974 |
| SEARCH | EP2204309 |
| SEARCH | GB1580362 |
| SEARCH | US2309024 |
| SEARCH | US2366709 |
| SEARCH | US2946297 |
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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Jan 5, 2023
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Refund of fees
Appeal
Sep 9, 2022
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Aug 25, 2022
(Electronic) Receipt
Appeal
Aug 25, 2022
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Withdrawal of an appeal
Appeal
Jun 1, 2022
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May 25, 2022
(Electronic) Receipt
Appeal
May 25, 2022
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Notice of appeal
Appeal
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Dec 10, 2020
Communication of amended entries
Search/Exam
Nov 27, 2020
Request concerning representative opponent
Search/Exam
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Document concerning representation
Search/Exam
Jan 3, 2020
Nov 28, 2019
Decision to grant a European patent
Search/Exam
Nov 14, 2019
(Electronic) Receipt
Search/Exam
Nov 14, 2019
Filing of the translations of the claims
Search/Exam
Nov 14, 2019
French translation of claims
Search/Exam
Nov 14, 2019
German translation of the claims
Search/Exam
Nov 14, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 30, 2019
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Intention to grant (signatures)
Search/Exam
Jul 30, 2019
Text intended for grant (clean copy)
Search/Exam
Jul 30, 2019
Jun 25, 2019
Examination started
Search/Exam
Feb 5, 2019
(Electronic) Receipt
Search/Exam
Feb 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 5, 2019
Maintenance of the application
Search/Exam
Jan 28, 2019
Jan 18, 2019
Refund of fees
Search/Exam
Jan 4, 2019
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European search opinion
Search/Exam
Jan 4, 2019
European search report
Search/Exam
Jan 4, 2019
Information on Search Strategy
Search/Exam
Jan 4, 2019
Notification of forthcoming publication
Search/Exam
Dec 20, 2018
Dec 14, 2018
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Nov 19, 2018
Search started
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Aug 8, 2018
Abstract
Search/Exam
Aug 8, 2018
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Claims
Search/Exam
Aug 8, 2018
Description
Search/Exam
Aug 8, 2018
Designation of inventor
Search/Exam
Aug 8, 2018
Drawings
Search/Exam
Aug 8, 2018
Matter concerning the application
Search/Exam
Aug 8, 2018
Request for grant of a European patent
Search/Exam
Aug 8, 2018
Submission concerning representation
Search/Exam
Jan 7, 2013