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The patent EP2361995 was granted to Nippon Steel on Dec 14, 2022. The application was filed on Aug 13, 2010 under application number EP10809927A. 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 |
|---|---|---|---|
| VOESTALPINE SCHIENEN | Feb 17, 2020 | KESCHMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JPH08144016 |
| DESCRIPTION | JPH08246100 |
| DESCRIPTION | JPH09111352 |
| DESCRIPTION | JPS512616 |
| INTERNATIONAL-SEARCH-REPORT | JP2003293086 |
| INTERNATIONAL-SEARCH-REPORT | JP2004346424 |
| INTERNATIONAL-SEARCH-REPORT | JP2006057127 |
| OPPOSITION | DE2148722 |
| OPPOSITION | JP2004346424 |
| OPPOSITION | JP2005171327 |
| OPPOSITION | JP2006057127 |
| OPPOSITION | JP2006057128 |
| OPPOSITION | JP2008266675 |
| OPPOSITION | US2004187981 |
| OPPOSITION | US5658400 |
| SEARCH | EP2071044 |
| SEARCH | JPH08246101 |
| SEARCH | US6556945 |
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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Nov 17, 2022
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General enquiry
OPPO
Jul 21, 2022
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Refund of fees
Appeal
Feb 28, 2022
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Withdrawal of an appeal
Appeal
Feb 9, 2022
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Notice of appeal
Appeal
Nov 29, 2021
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Means of redress
OPPO
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May 27, 2019
Apr 18, 2019
Decision to grant a European patent
Search/Exam
Apr 4, 2019
(Electronic) Receipt
Search/Exam
Apr 4, 2019
Filing of the translations of the claims
Search/Exam
Apr 4, 2019
French translation of claims
Search/Exam
Apr 4, 2019
German translation of the claims
Search/Exam
Apr 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 23, 2019
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Jan 23, 2019
Intention to grant (signatures)
Search/Exam
Jan 23, 2019
Text intended for grant (clean copy)
Search/Exam
Jan 23, 2019
Dec 10, 2018
Amended description with annotations
Search/Exam
Dec 10, 2018
Description
Search/Exam
Dec 10, 2018
Aug 3, 2018
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Aug 3, 2018
Intention to grant (signatures)
Search/Exam
Aug 3, 2018
Text intended for grant (clean copy)
Search/Exam
Aug 3, 2018
Apr 30, 2018
Amended description with annotations
Search/Exam
Apr 30, 2018
Description
Search/Exam
Apr 30, 2018
Jan 15, 2018
Annex to the communication
Search/Exam
Jan 15, 2018
Communication from the Examining Division
Search/Exam
Jan 9, 2018
Examination started
Search/Exam
Oct 17, 2017
Oct 17, 2017
Amended claims with annotations
Search/Exam
Oct 17, 2017
Oct 17, 2017
Amended description with annotations
Search/Exam
Oct 17, 2017
Amendments received before examination
Search/Exam
Jul 6, 2017
Jun 19, 2017
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Jun 19, 2017
European search opinion
Search/Exam
Jun 19, 2017
Information on Search Strategy
Search/Exam
Jun 19, 2017
Supplementary European search report
Search/Exam
May 16, 2017
Search started
Search/Exam
Mar 12, 2015
Submission concerning representation
Search/Exam
Jan 7, 2015
Dec 19, 2012
Dec 11, 2012
May 11, 2012
Mar 26, 2012
Mar 6, 2012
Aug 16, 2011
Aug 3, 2011
Notification of forthcoming publication
Search/Exam
Jun 3, 2011
(Electronic) Receipt
Search/Exam
Jun 3, 2011
General enquiry
Search/Exam
Jun 3, 2011
Letter accompanying subsequently filed items
Search/Exam
May 25, 2011
(Electronic) Receipt
Search/Exam
May 25, 2011
Abstract
Search/Exam
May 25, 2011
May 25, 2011
Claims
Search/Exam
May 25, 2011
Description
Search/Exam
May 25, 2011
Drawings
Search/Exam
May 25, 2011
Request for entry into the European phase
Search/Exam
Mar 18, 2011
Feb 24, 2011
Copy of the international search report
Search/Exam
Feb 24, 2011
Feb 24, 2011
International publication pamphlet
Search/Exam