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The patent EP3163729 was granted to Mitsubishi Electric on Oct 8, 2025. The application was filed on Apr 21, 2015 under application number EP15815326A. 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 |
|---|---|---|---|
| GENERAL ELECTRIC TECHNOLOGY | Jan 16, 2023 | POTTER CLARKSON | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2009527877 |
| INTERNATIONAL-SEARCH-REPORT | JP2010524426 |
| INTERNATIONAL-SEARCH-REPORT | WO2011114816 |
| INTERNATIONAL-SEARCH-REPORT | WO2014091801 |
| OPPOSITION | DE10323220 |
| OPPOSITION | EP2549634 |
| OPPOSITION | EP2987229 |
| OPPOSITION | US2010118453 |
| OPPOSITION | US2011235221 |
| OPPOSITION | US2013208519 |
| OPPOSITION | WO2010145688 |
| SEARCH | EP2549634 |
| SEARCH | US2011235221 |
| SEARCH | US2013208519 |
| SEARCH | WO2010145688 |
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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Sep 11, 2025
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Means of redress
OPPO
Feb 18, 2025
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Letter accompanying subsequently filed items
Search/Exam
Mar 20, 2023
Feb 6, 2023
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Jan 16, 2023
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May 4, 2022
Mar 24, 2022
Decision to grant a European patent
Search/Exam
Mar 21, 2022
Payment submission rejected
Search/Exam
Mar 10, 2022
(Electronic) Receipt
Search/Exam
Mar 10, 2022
Filing of the translations of the claims
Search/Exam
Mar 10, 2022
French translation of claims
Search/Exam
Mar 10, 2022
German translation of the claims
Search/Exam
Mar 10, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Intention to grant (signatures)
Search/Exam
Nov 18, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 18, 2021
Feb 25, 2021
(Electronic) Receipt
Search/Exam
Feb 25, 2021
Amended claims with annotations
Search/Exam
Feb 25, 2021
Amended description with annotations
Search/Exam
Feb 25, 2021
Claims
Search/Exam
Feb 25, 2021
Description
Search/Exam
Feb 25, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 25, 2021
Oct 22, 2020
Annex to the communication
Search/Exam
Oct 22, 2020
Communication from the Examining Division
Search/Exam
Oct 6, 2020
Examination started
Search/Exam
May 2, 2018
(Electronic) Receipt
Search/Exam
May 2, 2018
May 2, 2018
Amended claims with annotations
Search/Exam
May 2, 2018
Amendments received before examination
Search/Exam
May 2, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 27, 2017
Oct 11, 2017
Oct 11, 2017
European search opinion
Search/Exam
Oct 11, 2017
Information on Search Strategy
Search/Exam
Oct 11, 2017
Supplementary European search report
Search/Exam
Sep 25, 2017
Search started
Search/Exam
Jun 9, 2017
EPO/applicant correspondence crossed
Search/Exam
Jun 2, 2017
Apr 5, 2017
Notification of forthcoming publication
Search/Exam
Feb 7, 2017
Feb 3, 2017
Communication to designated inventor
Search/Exam
Feb 3, 2017
Communication to designated inventor
Search/Exam
Feb 3, 2017
Communication to designated inventor
Search/Exam
Feb 3, 2017
Communication to designated inventor
Search/Exam
Jan 16, 2017
Jan 16, 2017
Dec 16, 2016
(Electronic) Receipt
Search/Exam
Dec 16, 2016
Abstract
Search/Exam
Dec 16, 2016
Dec 16, 2016
Claims
Search/Exam
Dec 16, 2016
Description
Search/Exam
Dec 16, 2016
Drawings
Search/Exam
Dec 16, 2016
Request for entry into the European phase
Search/Exam
Nov 11, 2016
Information on entry into European phase
Search/Exam
Jan 26, 2016
Jan 7, 2016
Copy of the international search report
Search/Exam
Jan 7, 2016
Jan 7, 2016
International publication pamphlet
Search/Exam