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The patent EP3714679 was granted to Nanjing Chervon Industry on Aug 3, 2022. The application was filed on Dec 26, 2018 under application number EP18894932A. 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 |
|---|---|---|---|
| STIGA IN BREVE ANCHE ST | May 3, 2023 | SANTONICOLA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN102422750 |
| OPPOSITION | CN103125212 |
| OPPOSITION | DE212015000289U |
| OPPOSITION | EP2534938 |
| OPPOSITION | EP3079182 |
| OPPOSITION | EP3219188 |
| OPPOSITION | FR2252802 |
| OPPOSITION | US2013014966 |
| OPPOSITION | US2014144117 |
| OPPOSITION | US2015240773 |
| OPPOSITION | US2016183451 |
| OPPOSITION | US2016242356 |
| OPPOSITION | US2016338266 |
| OPPOSITION | US3732671 |
| OPPOSITION | US5934053 |
| OPPOSITION | US6688089 |
| OPPOSITION | US7392869 |
| OPPOSITION | US7610975 |
| OPPOSITION | US9282695 |
| OPPOSITION | WO2016074239 |
| OPPOSITION | WO2016094475 |
| OPPOSITION | WO2016109860 |
| OPPOSITION | WO2017013602 |
| OPPOSITION | WO2017145093 |
| OPPOSITION | WO2017173944 |
| OPPOSITION | WO2018031719 |
| OPPOSITION | WO2018102338 |
| OPPOSITION | WO9520868 |
| SEARCH | CN102422750B |
| SEARCH | EP3219188 |
| SEARCH | US2004050026 |
| SEARCH | US2015240773 |
| SEARCH | WO2016094475 |
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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Oct 23, 2025
Oct 20, 2025
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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Appeal
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Notice of appeal
Appeal
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Decision to grant a European patent
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Jun 24, 2022
French translation of claims
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Jun 24, 2022
German translation of the claims
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Letter accompanying subsequently filed items
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Annex
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(Electronic) Receipt
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Feb 7, 2022
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Claims
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Feb 7, 2022
Letter accompanying subsequently filed items
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Examination started
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Jun 15, 2021
(Electronic) Receipt
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Jun 15, 2021
Letter accompanying subsequently filed items
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Jun 4, 2021
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(Electronic) Receipt
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Amended claims with annotations
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May 25, 2021
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May 25, 2021
Letter accompanying subsequently filed items
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Jan 12, 2021
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European search opinion
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Dec 8, 2020
Information on Search Strategy
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Dec 8, 2020
Supplementary European search report
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Nov 27, 2020
Search started
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Sep 2, 2020
Notification of forthcoming publication
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Jul 6, 2020
Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Jun 23, 2020
Abstract
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Jun 23, 2020
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Amended claims with annotations
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Jun 23, 2020
Claims
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Jun 23, 2020
Description
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Jun 23, 2020
Drawings
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Jun 23, 2020
Request for entry into the European phase
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May 8, 2020
Information on entry into European phase
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Jul 23, 2019
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Copy of the international search report
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Jul 4, 2019
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International publication pamphlet
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