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The patent EP3669853 was granted to Ivoclar Vivadent on Mar 30, 2022. The application was filed on Dec 21, 2018 under application number EP18215764A. 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 |
|---|---|---|---|
| ARKEMA FRANCE | Dec 28, 2022 | BANDPAY & GREUTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP3150641 |
| DESCRIPTION | EP3293215 |
| EXAMINATION | WO2020005413 |
| SEARCH | DE19907957 |
| SEARCH | WO2016026915 |
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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Nov 13, 2025
Nov 11, 2025
(Electronic) Receipt
Appeal
Nov 11, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Aug 22, 2025
Aug 19, 2025
(Electronic) Receipt
Appeal
Aug 19, 2025
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
Feb 18, 2025
(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
Feb 18, 2025
Notice of appeal
Appeal
Dec 18, 2024
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Means of redress
OPPO
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Apr 12, 2022
Mar 3, 2022
Decision to grant a European patent
Search/Exam
Feb 21, 2022
(Electronic) Receipt
Search/Exam
Feb 21, 2022
English translation of the claims
Search/Exam
Feb 21, 2022
Filing of the translations of the claims
Search/Exam
Feb 21, 2022
French translation of claims
Search/Exam
Feb 21, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2021
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Intention to grant (signatures)
Search/Exam
Dec 20, 2021
Text intended for grant (clean copy)
Search/Exam
Dec 20, 2021
Oct 22, 2021
(Electronic) Receipt
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 22, 2021
Oct 22, 2021
Jul 23, 2021
Jul 19, 2021
(Electronic) Receipt
Search/Exam
Jul 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 19, 2021
Apr 15, 2021
Annex to the communication
Search/Exam
Apr 15, 2021
Communication from the Examining Division
Search/Exam
Apr 6, 2021
Examination started
Search/Exam
Dec 28, 2020
(Electronic) Receipt
Search/Exam
Dec 28, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 28, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Jun 29, 2020
May 27, 2020
Notification of forthcoming publication
Search/Exam
Apr 29, 2020
Communication to designated inventor
Search/Exam
Apr 17, 2020
(Electronic) Receipt
Search/Exam
Apr 17, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 17, 2020
Letter concerning the inventor
Search/Exam
Jun 26, 2019
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European search opinion
Search/Exam
Jun 26, 2019
European search report
Search/Exam
Jun 26, 2019
Information on Search Strategy
Search/Exam
Jun 18, 2019
Search started
Search/Exam
Jan 30, 2019
Deficiency in designation of inventor
Search/Exam
Dec 21, 2018
Abstract
Search/Exam
Dec 21, 2018
Dec 21, 2018
Claims
Search/Exam
Dec 21, 2018
Description
Search/Exam
Dec 21, 2018
Request for grant of a European patent
Search/Exam