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The patent EP3031857 was granted to LG Chem on Aug 18, 2021. The application was filed on Dec 11, 2014 under application number EP14868927A. 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 |
|---|---|---|---|
| NIPPON SHOKUBAI KABUSHIKI KAISHA | Jul 17, 2019 | RICKER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JPS56161408 |
| DESCRIPTION | JPS57158209 |
| DESCRIPTION | JPS57198714 |
| DESCRIPTION | KR20090123904 |
| DESCRIPTION | US4734478 |
| DESCRIPTION | US5140076 |
| INTERNATIONAL-SEARCH-REPORT | JPH06107846 |
| INTERNATIONAL-SEARCH-REPORT | JPH0615574B |
| INTERNATIONAL-SEARCH-REPORT | JPH07316337 |
| INTERNATIONAL-SEARCH-REPORT | KR20110049072 |
| INTERNATIONAL-SEARCH-REPORT | KR20110092236 |
| OPPOSITION | EP3031857 |
| OPPOSITION | JPS5980459 |
| OPPOSITION | JPS61257235 |
| OPPOSITION | US4587308 |
| OPPOSITION | US4758617 |
| OPPOSITION | US6831122 |
| OPPOSITION | WO2004069293 |
| OPPOSITION | WO2004069915 |
| OPPOSITION | WO2007121941 |
| SEARCH | EP0233067 |
| SEARCH | EP2826807 |
| SEARCH | KR20130120400 |
| SEARCH | US2004214499 |
| SEARCH | WO03049778 |
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
Sep 5, 2018
(Electronic) Receipt
Search/Exam
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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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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Amendments received before examination
Search/Exam
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Letter accompanying subsequently filed items
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May 11, 2017
Submission concerning representation
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European search opinion
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Information on Search Strategy
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Supplementary European search report
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Observations by third parties
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May 19, 2016
Notification of forthcoming publication
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Apr 15, 2016
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(Electronic) Receipt
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Abstract
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Mar 9, 2016
Claims
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Description
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Drawings
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Matter concerning the application
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Mar 9, 2016
Request for entry into the European phase
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Dec 3, 2015
Notification of the recording of a change
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Jun 18, 2015
Copy of the international search report
Search/Exam
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Copy of the international search report
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International publication pamphlet
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International publication pamphlet
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