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The patent EP3653539 was granted to Drkopp Frdertechnik on Aug 17, 2022. The application was filed on Oct 25, 2019 under application number EP19205233A. 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 |
|---|---|---|---|
| FERAG | May 16, 2023 | IPRIME RENTSCH KAELIN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102008026720 |
| OPPOSITION | AT14694U |
| OPPOSITION | DE102006025617 |
| OPPOSITION | DE102008026720 |
| OPPOSITION | DE102011116081 |
| OPPOSITION | DE102013103869 |
| OPPOSITION | DE102014203298 |
| OPPOSITION | DE102016109310 |
| OPPOSITION | DE102016208866 |
| OPPOSITION | DE2611556 |
| OPPOSITION | DE3104740 |
| OPPOSITION | EP0099434 |
| OPPOSITION | EP2196415 |
| OPPOSITION | EP2418160 |
| OPPOSITION | EP3180274 |
| OPPOSITION | EP3354605 |
| OPPOSITION | US2992721 |
| OPPOSITION | US3448870 |
| OPPOSITION | US5570773 |
| OPPOSITION | US9738450 |
| OPPOSITION | WO2005097633 |
| OPPOSITION | WO2016023869 |
| OPPOSITION | WO2017027896 |
| OPPOSITION | WO2017027897 |
| OPPOSITION | WO2018015885 |
| OPPOSITION | WO2018130712 |
| OPPOSITION | WO2018142242 |
| OPPOSITION | WO2018142243 |
| SEARCH | DE102016208866 |
| SEARCH | US3448870 |
| SEARCH | WO2017015681 |
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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Dec 3, 2025
Nov 28, 2025
(Electronic) Receipt
Appeal
Nov 28, 2025
Nov 28, 2025
Oct 29, 2025
Oct 24, 2025
(Electronic) Receipt
Appeal
Oct 24, 2025
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(Electronic) Receipt
Appeal
Aug 5, 2025
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(Electronic) Receipt
Appeal
Jul 4, 2025
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Reply to appeal
Appeal
Jul 1, 2025
(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Mar 5, 2025
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Feb 27, 2025
(Electronic) Receipt
Appeal
Feb 27, 2025
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(Electronic) Receipt
Appeal
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Dec 20, 2024
(Electronic) Receipt
Appeal
Dec 20, 2024
Dec 20, 2024
Notice of appeal
Appeal
Dec 19, 2024
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(Electronic) Receipt
Appeal
Dec 12, 2024
Notice of appeal
Appeal
Oct 30, 2024
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Means of redress
OPPO
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Aug 30, 2022
Jul 21, 2022
Decision to grant a European patent
Search/Exam
Jul 8, 2022
(Electronic) Receipt
Search/Exam
Jul 8, 2022
English translation of the claims
Search/Exam
Jul 8, 2022
Filing of the translations of the claims
Search/Exam
Jul 8, 2022
French translation of claims
Search/Exam
Jul 8, 2022
Letter accompanying subsequently filed items
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May 6, 2022
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Intention to grant (signatures)
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May 6, 2022
Text intended for grant (clean copy)
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May 6, 2022
Nov 9, 2021
(Electronic) Receipt
Search/Exam
Nov 9, 2021
Amended claims with annotations
Search/Exam
Nov 9, 2021
Amended description with annotations
Search/Exam
Nov 9, 2021
Claims
Search/Exam
Nov 9, 2021
Description
Search/Exam
Nov 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 9, 2021
Aug 12, 2021
Annex to the communication
Search/Exam
Aug 12, 2021
Communication from the Examining Division
Search/Exam
Jun 22, 2021
Examination started
Search/Exam
Jun 18, 2020
(Electronic) Receipt
Search/Exam
Jun 18, 2020
Jun 18, 2020
Amended claims with annotations
Search/Exam
Jun 18, 2020
Jun 18, 2020
Amended description with annotations
Search/Exam
Jun 18, 2020
Amendments received before examination
Search/Exam
Jun 18, 2020
Letter accompanying subsequently filed items
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May 27, 2020
Apr 22, 2020
Notification of forthcoming publication
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Apr 20, 2020
Apr 20, 2020
European search opinion
Search/Exam
Apr 20, 2020
European search report
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Apr 20, 2020
Information on Search Strategy
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Mar 20, 2020
Search started
Search/Exam
Dec 18, 2019
Communication to designated inventor
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Dec 18, 2019
Communication to designated inventor
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Oct 29, 2019
Letter concerning the priority
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Oct 29, 2019
Priority document
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Oct 25, 2019
Abstract
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Oct 25, 2019
Oct 25, 2019
Claims
Search/Exam
Oct 25, 2019
Description
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Oct 25, 2019
Designation of inventor
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Oct 25, 2019
Drawings
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Oct 25, 2019
Priority search results
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Oct 25, 2019
Request for grant of a European patent
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