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The patent EP3418333 was granted to Omya on Mar 17, 2021. The application was filed on May 21, 2015 under application number EP18176418A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| CALCIT DOO | Dec 13, 2021 | WITTMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP2194103 |
| OPPOSITION | US2010035076 |
| OPPOSITION | US2010095869 |
| OPPOSITION | WO2013167420 |
| OPPOSITION | WO2014016036 |
| OPPOSITION | WO2014044778 |
| OTHER | EP2194103 |
| OTHER | US2010035076 |
| SEARCH | EP2194103 |
| SEARCH | GB2139606 |
| SEARCH | WO2004016566 |
| SEARCH | WO2009009553 |
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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Mar 29, 2021
Feb 18, 2021
Decision to grant a European patent
Search/Exam
Feb 8, 2021
(Electronic) Receipt
Search/Exam
Feb 8, 2021
Filing of the translations of the claims
Search/Exam
Feb 8, 2021
French translation of claims
Search/Exam
Feb 8, 2021
German translation of the claims
Search/Exam
Nov 12, 2020
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(Electronic) Receipt
Search/Exam
Nov 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 6, 2020
Observations by third parties
Search/Exam
Sep 30, 2020
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Intention to grant (signatures)
Search/Exam
Sep 30, 2020
Text intended for grant (clean copy)
Search/Exam
Sep 30, 2020
Aug 13, 2020
(Electronic) Receipt
Search/Exam
Aug 13, 2020
Amended description with annotations
Search/Exam
Aug 13, 2020
Description
Search/Exam
Aug 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 13, 2020
Jul 6, 2020
Annex to the communication
Search/Exam
Jul 6, 2020
Communication from the Examining Division
Search/Exam
Feb 28, 2020
(Electronic) Receipt
Search/Exam
Feb 28, 2020
Amended claims with annotations
Search/Exam
Feb 28, 2020
Claims
Search/Exam
Feb 28, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2020
Jan 8, 2020
Dec 19, 2019
(Electronic) Receipt
Search/Exam
Dec 19, 2019
Aug 28, 2019
Annex to the communication
Search/Exam
Aug 28, 2019
Communication from the Examining Division
Search/Exam
Aug 15, 2019
Examination started
Search/Exam
Jun 25, 2019
(Electronic) Receipt
Search/Exam
Jun 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2019
Refund of fees
Search/Exam
Jan 4, 2019
Nov 28, 2018
Notification of forthcoming publication
Search/Exam
Oct 29, 2018
Oct 29, 2018
European search opinion
Search/Exam
Oct 29, 2018
European search report
Search/Exam
Oct 29, 2018
Information on Search Strategy
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
Jul 25, 2018
Refund of fees
Search/Exam
Jul 25, 2018
Refund of fees
Search/Exam
Jul 23, 2018
Priority search results copy provided by EPO
Search/Exam
Jun 7, 2018
Abstract
Search/Exam
Jun 7, 2018
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Annex
Search/Exam
Jun 7, 2018
Annex
Search/Exam
Jun 7, 2018
Claims
Search/Exam
Jun 7, 2018
Description
Search/Exam
Jun 7, 2018
Designation of inventor
Search/Exam
Jun 7, 2018
Drawings
Search/Exam
Jun 7, 2018
Previously filed application
Search/Exam
Jun 7, 2018
Request for grant of a European patent
Search/Exam
Jan 26, 2017
Priority search results copy provided by EPO
Search/Exam
Jan 4, 2016
Jan 4, 2016