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The patent EP3434331 was granted to Lukas Hydraulik on Feb 19, 2020. The application was filed on Jan 26, 2015 under application number EP18191723A. 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 |
|---|---|---|---|
| WEBER HYDRAULIK | Mar 30, 2020 | BURGER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE9215062U |
| DESCRIPTION | EP0419810 |
| DESCRIPTION | US8727317 |
| OPPOSITION | DE10110882 |
| OPPOSITION | DE202005008658U |
| OPPOSITION | DE69221221T |
| OPPOSITION | EP0519845 |
| OPPOSITION | EP2700863 |
| OPPOSITION | JP2004082273 |
| OPPOSITION | US2011214471 |
| OPPOSITION | US4333330 |
| OPPOSITION | US4443001 |
| OPPOSITION | US5956992 |
| OPPOSITION | US6311537 |
| OPPOSITION | USRE33002E |
| OPPOSITION | WO0009286 |
| OPPOSITION | WO2015003198 |
| OPPOSITION | WO9634657 |
| OTHER | US2011214471 |
| SEARCH | DE202005008658U |
| SEARCH | EP0419810 |
| SEARCH | EP0519845 |
| SEARCH | EP2700863 |
| SEARCH | JP2004082273 |
| SEARCH | US4443001 |
| SEARCH | US6311537 |
| SEARCH | USRE33002E |
| SEARCH | WO9634657 |
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 16, 2025
Aug 14, 2025
Aug 11, 2025
(Electronic) Receipt
Appeal
Aug 11, 2025
Aug 11, 2025
Reply to appeal
Appeal
Apr 16, 2025
Apr 11, 2025
(Electronic) Receipt
Appeal
Apr 11, 2025
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Feb 19, 2025
(Electronic) Receipt
Appeal
Feb 19, 2025
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Feb 12, 2025
(Electronic) Receipt
Appeal
Feb 12, 2025
Authorisation
Appeal
Feb 12, 2025
General authorisation
Appeal
Feb 12, 2025
Notice of appeal
Appeal
Feb 12, 2025
Notice of appeal
Appeal
Dec 12, 2024
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OPPO
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(Electronic) Receipt
Appeal
Mar 27, 2023
Authorisation
Appeal
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Mar 15, 2023
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Dec 23, 2022
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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Appeal
May 20, 2022
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Notice of appeal
Appeal
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OPPO
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Jan 23, 2020
Decision to grant a European patent
Search/Exam
Dec 17, 2019
(Electronic) Receipt
Search/Exam
Dec 17, 2019
English translation of the claims
Search/Exam
Dec 17, 2019
Filing of the translations of the claims
Search/Exam
Dec 17, 2019
French translation of claims
Search/Exam
Dec 17, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 3, 2019
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Nov 27, 2019
(Electronic) Receipt
Search/Exam
Nov 27, 2019
Nov 27, 2019
Citation filed by a third party
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Nov 27, 2019
Nov 27, 2019
Intention to grant (signatures)
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Nov 27, 2019
Non-patent literature filed by a third party
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Nov 27, 2019
Non-patent literature filed by a third party
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Nov 27, 2019
Non-patent literature filed by a third party
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Nov 27, 2019
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Nov 27, 2019
Observations by third parties
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Nov 27, 2019
Text intended for grant (clean copy)
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Nov 27, 2019
Oct 18, 2019
Examination started
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Oct 2, 2019
(Electronic) Receipt
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Oct 2, 2019
Oct 2, 2019
Amended description with annotations
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Oct 2, 2019
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Amended drawings with annotations
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Oct 2, 2019
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Oct 2, 2019
Letter accompanying subsequently filed items
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Sep 3, 2019
(Electronic) Receipt
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Sep 3, 2019
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Amended claims with annotations
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Amended description with annotations
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Sep 3, 2019
Amendments received before examination
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Sep 3, 2019
Letter accompanying subsequently filed items
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Sep 3, 2019
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Mar 25, 2019
Feb 20, 2019
Refund of fees
Search/Exam
Feb 15, 2019
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European search opinion
Search/Exam
Feb 15, 2019
European search report
Search/Exam
Feb 15, 2019
Information on Search Strategy
Search/Exam
Jan 10, 2019
(Electronic) Receipt
Search/Exam
Jan 10, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2019
Notification of forthcoming publication
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Dec 11, 2018
Dec 11, 2018
Information on Search Strategy
Search/Exam
Dec 11, 2018
Partial European search report
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Dec 11, 2018
Dec 3, 2018
Search started
Search/Exam
Oct 23, 2018
Communication to designated inventor
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Oct 23, 2018
Communication to designated inventor
Search/Exam
Oct 23, 2018
Communication to designated inventor
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Aug 30, 2018
Abstract
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Aug 30, 2018
Aug 30, 2018
Claims
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Aug 30, 2018
Description
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Aug 30, 2018
Designation of inventor
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Aug 30, 2018
Drawings
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Aug 30, 2018
Request for grant of a European patent
Search/Exam