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The patent EP3656530 was granted to Coperion on Aug 3, 2022. The application was filed on Nov 21, 2018 under application number EP18207607A. 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 |
|---|---|---|---|
| LEISTRITZ EXTRUSIONSTECHNIK | Apr 19, 2023 | LINDNER BLAUMEIER PATENT UND RECHTSANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102006022646 |
| OPPOSITION | EP2946904 |
| OPPOSITION | US3811658 |
| SEARCH | DE102017123940 |
| SEARCH | EP2946904 |
| SEARCH | US3278986 |
| SEARCH | US3811658 |
| SEARCH | US5120206 |
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
Jun 3, 2022
(Electronic) Receipt
Search/Exam
Jun 3, 2022
English translation of the claims
Search/Exam
Jun 3, 2022
Filing of the translations of the claims
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Jun 3, 2022
French translation of claims
Search/Exam
Jun 3, 2022
Letter accompanying subsequently filed items
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Feb 2, 2022
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Intention to grant (signatures)
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Feb 2, 2022
Text intended for grant (clean copy)
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Examination started
Search/Exam
Oct 28, 2020
(Electronic) Receipt
Search/Exam
Oct 28, 2020
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Amended claims with annotations
Search/Exam
Oct 28, 2020
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Amended description with annotations
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Oct 28, 2020
Amendments received before examination
Search/Exam
Oct 28, 2020
Letter accompanying subsequently filed items
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Jun 2, 2020
Apr 30, 2020
Notification of forthcoming publication
Search/Exam
May 22, 2019
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European search opinion
Search/Exam
May 22, 2019
European search report
Search/Exam
May 22, 2019
Information on Search Strategy
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May 10, 2019
Search started
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Jan 14, 2019
Communication to designated inventor
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Nov 21, 2018
Abstract
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Nov 21, 2018
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Claims
Search/Exam
Nov 21, 2018
Description
Search/Exam
Nov 21, 2018
Designation of inventor
Search/Exam
Nov 21, 2018
Drawings
Search/Exam
Nov 21, 2018
Request for grant of a European patent
Search/Exam