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The patent EP3581022 was granted to Lemmen on Dec 6, 2023. The application was filed on Jun 12, 2019 under application number EP19179667A. 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 |
|---|---|---|---|
| CHRISTIAENS GROUP | Aug 13, 2021 | VO | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | NL20182021053 |
| OPPOSITION | CN106879362 |
| OPPOSITION | CN206978252U |
| OPPOSITION | NL2021123B |
| OPPOSITION | US4371305 |
| OPPOSITION | US4717307 |
| OPPOSITION | US6206174 |
| OPPOSITION | US8069608 |
| OPPOSITION | WO9633602 |
| SEARCH | CN106879362 |
| SEARCH | IES20050384 |
| SEARCH | KR20180004440 |
| SEARCH | US4170432 |
| SEARCH | US4717307 |
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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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
Search/Exam
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May 25, 2020
Examination started
Search/Exam
Mar 31, 2020
(Electronic) Receipt
Search/Exam
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Amended claims with annotations
Search/Exam
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Amended description with annotations
Search/Exam
Mar 31, 2020
Amendments received before examination
Search/Exam
Mar 31, 2020
Letter accompanying subsequently filed items
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Notification of forthcoming publication
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Aug 13, 2019
Refund of fees
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European search opinion
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European search report
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Aug 9, 2019
Information on Search Strategy
Search/Exam
Aug 6, 2019
Priority search results copy provided by EPO
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Aug 2, 2019
Modified abstract
Search/Exam
Jul 31, 2019
Search started
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Jun 12, 2019
Abstract
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Claims
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Jun 12, 2019
Description
Search/Exam
Jun 12, 2019
Designation of inventor
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Jun 12, 2019
Drawings
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Jun 12, 2019
Request for grant of a European patent
Search/Exam