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The patent EP3657605 was granted to Dinkle Electric Machinery China on Apr 20, 2022. The application was filed on Nov 22, 2018 under application number EP18207842A. 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 |
|---|---|---|---|
| PHOENIX CONTACT | Jan 20, 2023 | GESTHUYSEN PATENTANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DE19949387 |
| EXAMINATION | DE3743410 |
| OPPOSITION | DE3743410 |
| OPPOSITION | EP0246199 |
| OPPOSITION | EP1094551 |
| OPPOSITION | US2012029549 |
| OPPOSITION | US9397444 |
| OPPOSITION | US9466897 |
| SEARCH | DE19949387 |
| SEARCH | DE3743410 |
| SEARCH | EP1094551 |
| SEARCH | US9397444 |
| SEARCH | US9466897 |
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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Mar 24, 2022
Decision to grant a European patent
Search/Exam
Mar 9, 2022
(Electronic) Receipt
Search/Exam
Mar 9, 2022
Filing of the translations of the claims
Search/Exam
Mar 9, 2022
French translation of claims
Search/Exam
Mar 9, 2022
German translation of the claims
Search/Exam
Mar 9, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2021
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Intention to grant (signatures)
Search/Exam
Dec 22, 2021
Text intended for grant (clean copy)
Search/Exam
Dec 22, 2021
Dec 16, 2021
Document concerning representation
Search/Exam
Sep 30, 2021
Amended claims with annotations
Search/Exam
Sep 30, 2021
Claims
Search/Exam
Sep 30, 2021
Jul 23, 2021
Jul 20, 2021
Annex to the communication
Search/Exam
Jul 20, 2021
Communication from the Examining Division
Search/Exam
Jul 12, 2021
(Electronic) Receipt
Search/Exam
Jul 12, 2021
Enquiry as to the processing of the file
Search/Exam
Jul 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 9, 2021
Examination started
Search/Exam
Aug 12, 2020
Aug 7, 2020
(Electronic) Receipt
Search/Exam
Aug 7, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 7, 2020
Letter concerning fees and payments
Search/Exam
Jun 2, 2020
Apr 30, 2020
Notification of forthcoming publication
Search/Exam
Aug 30, 2019
Aug 30, 2019
Amended claims with annotations
Search/Exam
Aug 30, 2019
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Amended description with annotations
Search/Exam
Aug 30, 2019
Amendments received before examination
Search/Exam
Aug 30, 2019
Matter concerning the application
Search/Exam
May 23, 2019
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European search opinion
Search/Exam
May 23, 2019
European search report
Search/Exam
May 23, 2019
Information on Search Strategy
Search/Exam
May 7, 2019
Search started
Search/Exam
Jan 16, 2019
Communication to designated inventor
Search/Exam
Nov 23, 2018
(Electronic) Receipt
Search/Exam
Nov 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 22, 2018
Abstract
Search/Exam
Nov 22, 2018
Nov 22, 2018
Claims
Search/Exam
Nov 22, 2018
Description
Search/Exam
Nov 22, 2018
Designation of inventor
Search/Exam
Nov 22, 2018
Drawings
Search/Exam
Nov 22, 2018
Request for grant of a European patent
Search/Exam