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The patent EP2952371 was granted to Nippon Steel & Sumitomo Metal on Aug 25, 2021. The application was filed on Jan 30, 2013 under application number EP13873697A. 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 |
|---|---|---|---|
| BENTELER AUTOMOBILTECHNIK | Dec 14, 2018 | OSTERHOFF | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2005306177 |
| INTERNATIONAL-SEARCH-REPORT | JP2004314651 |
| INTERNATIONAL-SEARCH-REPORT | JP2011046232 |
| INTERNATIONAL-SEARCH-REPORT | JP2012505784 |
| OPPOSITION | EP2143511 |
| OPPOSITION | JP2004314651 |
| OPPOSITION | JP2011046232 |
| OPPOSITION | JP2012505784 |
| SEARCH | EP2143511 |
| SEARCH | JP2004314651 |
| SEARCH | JP2011046232 |
| SEARCH | JP2012505784 |
| SEARCH | WO2010043036 |
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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Aug 5, 2021
Jul 29, 2021
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Means of redress
OPPO
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Claims
OPPO
Jun 25, 2019
Claims
OPPO
Jun 25, 2019
Claims
OPPO
Jun 25, 2019
Claims
OPPO
Jun 25, 2019
Claims
OPPO
Jun 25, 2019
Claims
OPPO
Jun 25, 2019
Feb 15, 2019
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Mar 26, 2018
Feb 15, 2018
Decision to grant a European patent
Search/Exam
Jan 30, 2018
Filing of the translations of the claims
Search/Exam
Dec 14, 2017
Dec 14, 2017
Dec 14, 2017
Intention to grant (signatures)
Search/Exam
Dec 14, 2017
Text intended for grant (clean copy)
Search/Exam
Dec 14, 2017
Nov 27, 2017
Nov 8, 2017
Amended claims with annotations
Search/Exam
Nov 8, 2017
Claims
Search/Exam
Nov 8, 2017
French translation of claims
Search/Exam
Nov 8, 2017
German translation of the claims
Search/Exam
Nov 8, 2017
Payment of fees and costs
Search/Exam
Nov 8, 2017
Jun 30, 2017
Jun 30, 2017
Jun 30, 2017
Intention to grant (signatures)
Search/Exam
Jun 30, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 30, 2017
May 4, 2017
Examination started
Search/Exam
Apr 10, 2017
Apr 10, 2017
Amended claims with annotations
Search/Exam
Apr 10, 2017
Amendments received before examination
Search/Exam
Apr 10, 2017
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Sep 30, 2016
Sep 13, 2016
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European search opinion
Search/Exam
Sep 13, 2016
Information on Search Strategy
Search/Exam
Sep 13, 2016
Supplementary European search report
Search/Exam
Sep 5, 2016
Search started
Search/Exam
Nov 11, 2015
Notification of forthcoming publication
Search/Exam
Sep 8, 2015
Sep 4, 2015
Communication to designated inventor
Search/Exam
Sep 4, 2015
Communication to designated inventor
Search/Exam
Sep 4, 2015
Communication to designated inventor
Search/Exam
Aug 17, 2015
Aug 17, 2015
Jul 15, 2015
(Electronic) Receipt
Search/Exam
Jul 15, 2015
Abstract
Search/Exam
Jul 15, 2015
Claims
Search/Exam
Jul 15, 2015
Description
Search/Exam
Jul 15, 2015
Drawings
Search/Exam
Jul 15, 2015
Request for entry into the European phase
Search/Exam
Jun 12, 2015
Information on entry into European phase
Search/Exam
Aug 7, 2014
Copy of the international search report
Search/Exam
Aug 7, 2014
Aug 7, 2014
International publication pamphlet
Search/Exam