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The patent EP3540213 was granted to Beijing Goldwind Science & Creation Windpower Equipment on Nov 15, 2023. The application was filed on Jul 10, 2018 under application number EP18852761A. 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 |
|---|---|---|---|
| ENERCON | Sep 9, 2021 | EISENFUHR SPEISER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN103244354 |
| INTERNATIONAL-SEARCH-REPORT | CN103573550 |
| INTERNATIONAL-SEARCH-REPORT | CN104806448 |
| INTERNATIONAL-SEARCH-REPORT | CN105275742 |
| INTERNATIONAL-SEARCH-REPORT | CN107061158 |
| INTERNATIONAL-SEARCH-REPORT | JP2016079965 |
| INTERNATIONAL-SEARCH-REPORT | US2016215759 |
| OPPOSITION | EP2840257 |
| OPPOSITION | US2002194113 |
| OPPOSITION | US2006273595 |
| OPPOSITION | US2011018271 |
| OPPOSITION | US2015003983 |
| OPPOSITION | WO2016082838 |
| SEARCH | CN103573550 |
| SEARCH | US2017268487 |
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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Description
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Decision to grant a European patent
Search/Exam
Oct 27, 2020
(Electronic) Receipt
Search/Exam
Oct 27, 2020
Filing of the translations of the claims
Search/Exam
Oct 27, 2020
French translation of claims
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Oct 27, 2020
German translation of the claims
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Oct 27, 2020
Letter accompanying subsequently filed items
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Intention to grant (signatures)
Search/Exam
Jun 19, 2020
Text intended for grant (clean copy)
Search/Exam
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May 25, 2020
Examination started
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Matter concerning the application
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Priority search results
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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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Search started
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Aug 21, 2019
Notification of forthcoming publication
Search/Exam
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Copy of the international search report
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International publication pamphlet
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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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Copy of the international search report
Search/Exam
Apr 11, 2019
International publication pamphlet
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Substitute sheet (R26) Request
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Enquiry with the International Bureau
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(Electronic) Receipt
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Abstract
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Abstract
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Abstract
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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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Drawings
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Request for entry into the European phase
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