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The patent EP3690069 was granted to Poongsan on Aug 27, 2025. The application was filed on Jun 4, 2019 under application number EP19756080A. 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 |
|---|---|---|---|
| OTTO FUCHS KOMMANDITGESELLSCHAFT | Oct 23, 2023 | HAVERKAMP PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | KR20010033101 |
| DESCRIPTION | KR20120104963 |
| DESCRIPTION | KR20130035439 |
| INTERNATIONAL-SEARCH-REPORT | JP2000119775 |
| INTERNATIONAL-SEARCH-REPORT | JP2001064742 |
| INTERNATIONAL-SEARCH-REPORT | KR20120104963 |
| INTERNATIONAL-SEARCH-REPORT | KR20130035439 |
| INTERNATIONAL-SEARCH-REPORT | KR20130035440 |
| OPPOSITION | JP2001064742 |
| OPPOSITION | JPS6230861 |
| OPPOSITION | US6413330 |
| SEARCH | CN103643078B |
| SEARCH | JPS60164198 |
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
Dec 16, 2022
(Electronic) Receipt
Search/Exam
Dec 16, 2022
Filing of the translations of the claims
Search/Exam
Dec 16, 2022
French translation of claims
Search/Exam
Dec 16, 2022
German translation of the claims
Search/Exam
Aug 22, 2022
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Intention to grant (signatures)
Search/Exam
Aug 22, 2022
Text intended for grant (clean copy)
Search/Exam
Aug 22, 2022
Jun 30, 2022
Examination started
Search/Exam
Dec 10, 2021
(Electronic) Receipt
Search/Exam
Dec 10, 2021
Dec 10, 2021
Amended claims with annotations
Search/Exam
Dec 10, 2021
Amendments received before examination
Search/Exam
Dec 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 20, 2021
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European search opinion
Search/Exam
Jul 2, 2021
Information on Search Strategy
Search/Exam
Jul 2, 2021
Supplementary European search report
Search/Exam
Jun 24, 2021
Search started
Search/Exam
Jul 14, 2020
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Jul 8, 2020
Notification of forthcoming publication
Search/Exam
Jun 25, 2020
Copy of the international search report
Search/Exam
Jun 25, 2020
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International publication pamphlet
Search/Exam
Oct 17, 2019
Oct 15, 2019
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Enquiry with the International Bureau
Search/Exam
Oct 15, 2019
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Sep 25, 2019
Sep 13, 2019
Enquiry with the International Bureau
Search/Exam
Aug 29, 2019
(Electronic) Receipt
Search/Exam
Aug 29, 2019
Abstract
Search/Exam
Aug 29, 2019
Claims
Search/Exam
Aug 29, 2019
Description
Search/Exam
Aug 29, 2019
Drawings
Search/Exam
Aug 29, 2019
Request for entry into the European phase
Search/Exam