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The patent EP3708607 was granted to LG Chem on Jun 7, 2023. The application was filed on Aug 16, 2019 under application number EP19885013A. 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 |
|---|---|---|---|
| NIPPON SHOKUBAI KABUSHIKI KAISHA | Mar 6, 2024 | WALLINGER RICKER SCHLOTTER TOSTMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JPS5631866B |
| INTERNATIONAL-SEARCH-REPORT | KR20160141666 |
| INTERNATIONAL-SEARCH-REPORT | KR20170092314 |
| INTERNATIONAL-SEARCH-REPORT | KR20170096322 |
| INTERNATIONAL-SEARCH-REPORT | KR20180076272 |
| OPPOSITION | EP2415822 |
| OPPOSITION | EP2479195 |
| OPPOSITION | EP2479196 |
| OPPOSITION | EP2927264 |
| OPPOSITION | US6228930 |
| OPPOSITION | US7638570 |
| OTHER | EP1367081 |
| OTHER | EP2415822 |
| OTHER | EP2479196 |
| OTHER | JP2015048386 |
| OTHER | US6641064 |
| SEARCH | EP2253375 |
| SEARCH | EP2415822 |
| SEARCH | EP2479196 |
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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Oct 13, 2025
Oct 13, 2025
Jul 7, 2025
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Means of redress
OPPO
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Jun 20, 2023
May 11, 2023
Decision to grant a European patent
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Apr 21, 2023
(Electronic) Receipt
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Apr 21, 2023
Filing of the translations of the claims
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Apr 21, 2023
French translation of claims
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Apr 21, 2023
German translation of the claims
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Mar 31, 2023
(Electronic) Receipt
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Mar 31, 2023
Letter concerning fees and payments
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Mar 20, 2023
Mar 20, 2023
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Mar 20, 2023
Intention to grant (signatures)
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Mar 20, 2023
Text intended for grant (clean copy)
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Mar 20, 2023
Jan 26, 2023
(Electronic) Receipt
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Jan 26, 2023
Amended description with annotations
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Jan 26, 2023
Description
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Jan 26, 2023
Letter accompanying subsequently filed items
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Jan 26, 2023
Oct 24, 2022
Annex to the communication
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Oct 24, 2022
Communication from the Examining Division
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Oct 12, 2022
Examination started
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Jul 25, 2022
(Electronic) Receipt
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Jul 25, 2022
Enquiry as to the processing of the file
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Jul 25, 2022
Letter accompanying subsequently filed items
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Jul 19, 2021
(Electronic) Receipt
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Jul 19, 2021
Letter accompanying subsequently filed items
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Jul 19, 2021
Reply to Written Opinion prepared by the EPO
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May 20, 2021
May 14, 2021
Observations by third parties
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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Patent document filed by a Third party
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Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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May 14, 2021
Patent document filed by a Third party
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Feb 19, 2021
Feb 2, 2021
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European search opinion
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Feb 2, 2021
Information on Search Strategy
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Feb 2, 2021
Supplementary European search report
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Jan 22, 2021
Jan 13, 2021
Observations by third parties
Search/Exam
Jan 13, 2021
Patent document filed by a Third party
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Jan 13, 2021
Patent document filed by a Third party
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Jan 13, 2021
Patent document filed by a Third party
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Jan 13, 2021
Patent document filed by a Third party
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Jan 13, 2021
Patent document filed by a Third party
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Sep 29, 2020
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Sep 21, 2020
Letter which had not been notified
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Sep 21, 2020
Letter which had not been notified
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Sep 21, 2020
Letter which had not been notified
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Sep 21, 2020
Letter which had not been notified
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Sep 21, 2020
Letter which had not been notified
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Aug 19, 2020
Notification of forthcoming publication
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Aug 10, 2020
Aug 10, 2020
Aug 10, 2020
Jun 29, 2020
Communication to designated inventor
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Jun 29, 2020
Communication to designated inventor
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Jun 29, 2020
Communication to designated inventor
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Jun 29, 2020
Communication to designated inventor
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Jun 29, 2020
Communication to designated inventor
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Jun 29, 2020
Jun 29, 2020
Jun 11, 2020
(Electronic) Receipt
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Jun 11, 2020
Abstract
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Jun 11, 2020
Jun 11, 2020
Amended claims with annotations
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Jun 11, 2020
Claims
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Jun 11, 2020
Description
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Jun 11, 2020
Jun 11, 2020
Request for entry into the European phase
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May 22, 2020
Copy of the international search report
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May 22, 2020
May 22, 2020
International publication pamphlet
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