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The patent EP2794951 was granted to Tata Steel Nederland Technology on Mar 6, 2019. The application was filed on Dec 21, 2012 under application number EP12812866A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| ARCELORMITTAL | Nov 28, 2019 | LAVOIX | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0730045 |
| INTERNATIONAL-SEARCH-REPORT | GB1235412 |
| INTERNATIONAL-SEARCH-REPORT | US5135817 |
| INTERNATIONAL-SEARCH-REPORT | WO0214573 |
| OPPOSITION | EP0730045 |
| OPPOSITION | GB1323865 |
| OPPOSITION | JPH02141588 |
| OPPOSITION | US5135817 |
| OPPOSITION | WO0214573 |
| OPPOSITION | WO2008142222 |
| OPPOSITION | WO2009047333 |
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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Means of redress
OPPO
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Jul 8, 2019
Jun 27, 2019
Mar 18, 2019
Feb 7, 2019
Decision to grant a European patent
Search/Exam
Jan 23, 2019
(Electronic) Receipt
Search/Exam
Jan 23, 2019
French translation of claims
Search/Exam
Jan 23, 2019
German translation of the claims
Search/Exam
Jan 23, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 14, 2018
Dec 14, 2018
Dec 14, 2018
Intention to grant (signatures)
Search/Exam
Dec 14, 2018
Text intended for grant (clean copy)
Search/Exam
Dec 14, 2018
Oct 24, 2018
(Electronic) Receipt
Search/Exam
Oct 24, 2018
Amended claims with annotations
Search/Exam
Oct 24, 2018
Claims
Search/Exam
Oct 24, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 24, 2018
Aug 21, 2018
Aug 8, 2018
(Electronic) Receipt
Search/Exam
Aug 8, 2018
Apr 19, 2018
Annex to the communication
Search/Exam
Apr 19, 2018
Communication from the Examining Division
Search/Exam
Apr 20, 2017
(Electronic) Receipt
Search/Exam
Apr 20, 2017
Amended claims with annotations
Search/Exam
Apr 20, 2017
Claims
Search/Exam
Apr 20, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 20, 2017
Mar 23, 2017
Annexes in respect of a client data request
Search/Exam
Mar 15, 2017
Submission concerning representation
Search/Exam
Jan 20, 2017
Jan 17, 2017
(Electronic) Receipt
Search/Exam
Jan 17, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 14, 2016
Annex to the communication
Search/Exam
Oct 14, 2016
Communication from the Examining Division
Search/Exam
Sep 16, 2016
(Electronic) Receipt
Search/Exam
Sep 16, 2016
Amended claims with annotations
Search/Exam
Sep 16, 2016
Claims
Search/Exam
Sep 16, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 16, 2016
Jun 7, 2016
May 30, 2016
(Electronic) Receipt
Search/Exam
May 30, 2016
Letter accompanying subsequently filed items
Search/Exam
May 30, 2016
Mar 11, 2016
Annex to the communication
Search/Exam
Mar 11, 2016
Communication from the Examining Division
Search/Exam
Mar 4, 2016
Examination started
Search/Exam
Feb 3, 2015
Feb 3, 2015
Amended claims with annotations
Search/Exam
Feb 3, 2015
Amendments received before examination
Search/Exam
Jan 30, 2015
Jan 30, 2015
Amended claims with annotations
Search/Exam
Jan 30, 2015
Amendments received before examination
Search/Exam
Oct 1, 2014
Aug 1, 2014
Jul 30, 2014
Communication to designated inventor
Search/Exam
Jul 30, 2014
Communication to designated inventor
Search/Exam
Jul 30, 2014
Communication to designated inventor
Search/Exam
Jul 30, 2014
Communication to designated inventor
Search/Exam
Jul 26, 2014
Priority search results copy provided by EPO
Search/Exam
Jul 3, 2014
Jun 18, 2014
Request for entry into the European phase
Search/Exam
Jun 17, 2014
Request for entry into the European phase
Search/Exam
May 6, 2014
Information on entry into European phase
Search/Exam
Feb 14, 2014
Feb 14, 2014
Feb 14, 2014
Feb 14, 2014
Feb 14, 2014
Dec 5, 2013
Notification of election of EPO
Search/Exam
Nov 27, 2013
Nov 21, 2013
Written opinion
PCT2
Nov 21, 2013
Nov 21, 2013
Oct 29, 2013
Oct 25, 2013
Oct 25, 2013
PCT demand form
PCT2
Oct 25, 2013
Oct 25, 2013
Oct 23, 2013
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PCT demand form
PCT2
Oct 23, 2013
Oct 23, 2013
Oct 23, 2013
Jul 17, 2013
Jun 27, 2013
Copy of the international search report
Search/Exam
Jun 27, 2013
Published international application - A1
Search/Exam
Mar 22, 2013
Mar 22, 2013
Mar 22, 2013
Dec 24, 2012
Abstract
PCTRO
Dec 24, 2012
Claims
PCTRO
Dec 24, 2012
Description
PCTRO
Dec 24, 2012
Drawings
PCTRO
Dec 21, 2012
Dec 21, 2012