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The patent EP3053801 was granted to Alstom on Nov 1, 2023. The application was filed on Feb 6, 2015 under application number EP15305176A. 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 |
|---|---|---|---|
| SIEMENS MOBILITY | Apr 20, 2021 | SIEMENS PATENT ATTORNEYS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN201611928U |
| OPPOSITION | EP0624501 |
| OPPOSITION | EP0913325 |
| OPPOSITION | EP2397386 |
| OPPOSITION | EP2628649 |
| OPPOSITION | JP2000350195 |
| OPPOSITION | US2010188506 |
| OPPOSITION | US2013169807 |
| OPPOSITION | US8720345 |
| OPPOSITION | WO2010004547 |
| SEARCH | CN201611928U |
| SEARCH | EP0624501 |
| SEARCH | EP2397386 |
| SEARCH | EP2628649 |
| SEARCH | US8720345 |
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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Oct 6, 2023
Oct 6, 2023
Sep 29, 2023
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Sep 13, 2023
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Authorisation
OPPO
Aug 25, 2023
Authorisation
OPPO
Aug 25, 2023
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Means of redress
OPPO
Mar 9, 2023
Mar 9, 2023
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Aug 17, 2020
Jul 9, 2020
Decision to grant a European patent
Search/Exam
Jun 25, 2020
(Electronic) Receipt
Search/Exam
Jun 25, 2020
English translation of the claims
Search/Exam
Jun 25, 2020
Filing of the translations of the claims
Search/Exam
Jun 25, 2020
German translation of the claims
Search/Exam
Jun 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2020
Mar 25, 2020
Mar 25, 2020
Intention to grant (signatures)
Search/Exam
Mar 25, 2020
Text intended for grant (clean copy)
Search/Exam
Mar 25, 2020
Nov 7, 2019
(Electronic) Receipt
Search/Exam
Nov 7, 2019
Amended claims with annotations
Search/Exam
Nov 7, 2019
Amended description with annotations
Search/Exam
Nov 7, 2019
Claims
Search/Exam
Nov 7, 2019
Description
Search/Exam
Nov 7, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 7, 2019
Jul 11, 2019
Annex to the communication
Search/Exam
Jul 11, 2019
Communication from the Examining Division
Search/Exam
May 23, 2019
Examination started
Search/Exam
Feb 14, 2019
Apr 13, 2017
Apr 10, 2017
Feb 20, 2017
Jan 13, 2017
Jan 10, 2017
Jan 9, 2017
(Electronic) Receipt
Search/Exam
Jan 9, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 8, 2016
Sep 2, 2016
Aug 16, 2016
Jul 13, 2016
Jul 13, 2016
Notification of forthcoming publication
Search/Exam
Jul 7, 2016
Mar 7, 2016
(Electronic) Receipt
Search/Exam
Mar 7, 2016
Mar 7, 2016
Amended claims with annotations
Search/Exam
Mar 7, 2016
Mar 7, 2016
Amended description with annotations
Search/Exam
Mar 7, 2016
Amendments received before examination
Search/Exam
Mar 7, 2016
Letter accompanying subsequently filed items
Search/Exam
Aug 10, 2015
Aug 10, 2015
European search opinion
Search/Exam
Aug 10, 2015
European search report
Search/Exam
Jul 27, 2015
Search started
Search/Exam
Apr 30, 2015
Communication to designated inventor
Search/Exam
Apr 30, 2015
Communication to designated inventor
Search/Exam
Apr 30, 2015
Communication to designated inventor
Search/Exam
Feb 24, 2015
Feb 6, 2015
Abstract
Search/Exam
Feb 6, 2015
Feb 6, 2015
Claims
Search/Exam
Feb 6, 2015
Description
Search/Exam
Feb 6, 2015
Designation of inventor
Search/Exam
Feb 6, 2015
Drawings
Search/Exam
Feb 6, 2015
Request for grant of a European patent
Search/Exam