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The patent EP3439430 was granted to Nippon Steel on Aug 23, 2023. The application was filed on Mar 30, 2016 under application number EP16896858A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| SMS GROUP | May 22, 2024 | RICHLY & RITSCHEL PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JPH0636867 |
| OPPOSITION | DE102007039279 |
| OPPOSITION | EP0902603 |
| OPPOSITION | EP2955239 |
| OPPOSITION | US5397877 |
| OPPOSITION | US5495094 |
| OPPOSITION | US6180933 |
| OPPOSITION | US6963056 |
| SEARCH | EP2538749 |
| SEARCH | US5397877 |
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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Decision to grant a European patent
Search/Exam
Jul 13, 2023
(Electronic) Receipt
Search/Exam
Jul 13, 2023
Filing of the translations of the claims
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Jul 13, 2023
French translation of claims
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Jul 13, 2023
German translation of the claims
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Jul 13, 2023
Letter accompanying subsequently filed items
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Jul 7, 2023
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Intention to grant (signatures)
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Jul 7, 2023
Text intended for grant (clean copy)
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(Electronic) Receipt
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Jun 12, 2023
Amended claims with annotations
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Jun 12, 2023
Claims
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Jun 12, 2023
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Feb 22, 2023
Text intended for grant (clean copy)
Search/Exam
Feb 22, 2023
Feb 3, 2021
(Electronic) Receipt
Search/Exam
Feb 3, 2021
Amended claims with annotations
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Feb 3, 2021
Amended claims with annotations
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Feb 3, 2021
Amended claims with annotations
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Feb 3, 2021
Claims
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Claims
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Feb 3, 2021
Description
Search/Exam
Feb 3, 2021
Letter accompanying subsequently filed items
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Feb 3, 2021
Oct 9, 2020
Annex to the communication
Search/Exam
Oct 9, 2020
Communication from the Examining Division
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Oct 5, 2020
Examination started
Search/Exam
Apr 23, 2020
(Electronic) Receipt
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Apr 23, 2020
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Amended claims with annotations
Search/Exam
Apr 23, 2020
Amendments received before examination
Search/Exam
Apr 23, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 12, 2019
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European search opinion
Search/Exam
Oct 22, 2019
Information on Search Strategy
Search/Exam
Oct 22, 2019
Supplementary European search report
Search/Exam
Oct 14, 2019
Search started
Search/Exam
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Amended description with annotations
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Feb 21, 2019
Amendments received before examination
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Jan 9, 2019
Notification of forthcoming publication
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Nov 7, 2018
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Communication to designated inventor
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Nov 5, 2018
Communication to designated inventor
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Oct 16, 2018
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Aug 3, 2018
Information regarding early processing
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Jul 19, 2018
(Electronic) Receipt
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Jul 19, 2018
Abstract
Search/Exam
Jul 19, 2018
Claims
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Jul 19, 2018
Description
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Jul 19, 2018
Drawings
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Jul 19, 2018
Request for entry into the European phase
Search/Exam
Oct 5, 2017
Copy of the international search report
Search/Exam
Oct 5, 2017
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International publication pamphlet
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