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The patent EP3425080 was granted to Nippon Steel on Jul 24, 2024. The application was filed on Mar 2, 2017 under application number EP17760128A. 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 |
|---|---|---|---|
| ARCELORMITTAL | Feb 24, 2022 | LAVOIX | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2000045042 |
| INTERNATIONAL-SEARCH-REPORT | JP2006144087 |
| INTERNATIONAL-SEARCH-REPORT | JP2011157573 |
| INTERNATIONAL-SEARCH-REPORT | WO2015093321 |
| OPPOSITION | EP3085803 |
| OPPOSITION | JP2005264208 |
| OPPOSITION | JP2005272949 |
| OPPOSITION | JPH05263182 |
| OPPOSITION | US2014301888 |
| OPPOSITION | US6170284 |
| OPPOSITION | WO2011065479 |
| SEARCH | EP0589424 |
| SEARCH | EP3133181 |
| SEARCH | JP3472017B |
| SEARCH | US2014301888 |
| SEARCH | WO2015159793 |
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.
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Decision to grant a European patent
Search/Exam
Apr 7, 2021
(Electronic) Receipt
Search/Exam
Apr 7, 2021
Filing of the translations of the claims
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Apr 7, 2021
French translation of claims
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Apr 7, 2021
German translation of the claims
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Apr 7, 2021
Letter accompanying subsequently filed items
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Nov 27, 2020
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Intention to grant (signatures)
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Nov 27, 2020
Text intended for grant (clean copy)
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(Electronic) Receipt
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Amended claims with annotations
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Amended description with annotations
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Claims
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Description
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jul 21, 2020
Text intended for grant (clean copy)
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Jun 17, 2020
Examination started
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Apr 1, 2020
(Electronic) Receipt
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Apr 1, 2020
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Amended claims with annotations
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Apr 1, 2020
Amendments received before examination
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Apr 1, 2020
Letter accompanying subsequently filed items
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Oct 15, 2019
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European search opinion
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Sep 26, 2019
Information on Search Strategy
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Sep 26, 2019
Supplementary European search report
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Sep 16, 2019
Search started
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Jun 3, 2019
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Notification of forthcoming publication
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Oct 10, 2018
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Aug 16, 2018
Abstract
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Aug 16, 2018
Claims
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Aug 16, 2018
Description
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Aug 16, 2018
Drawings
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Aug 16, 2018
Request for entry into the European phase
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Jul 13, 2018
Information on entry into European phase
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Sep 25, 2017
Sep 8, 2017
Copy of the international search report
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Sep 8, 2017
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International publication pamphlet
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