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The patent EP3341107 was granted to Imerys Filtration Minerals on Oct 18, 2023. The application was filed on Aug 25, 2016 under application number EP16842650A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2005037969 |
| INTERNATIONAL-SEARCH-REPORT | US2007151146 |
| INTERNATIONAL-SEARCH-REPORT | US2012172195 |
| INTERNATIONAL-SEARCH-REPORT | US2015190778 |
| INTERNATIONAL-SEARCH-REPORT | US4764384 |
| INTERNATIONAL-SEARCH-REPORT | US6712974 |
| INTERNATIONAL-SEARCH-REPORT | US8242050 |
| OPPOSITION | CN103933938 |
| OPPOSITION | EP0355521 |
| OPPOSITION | JPH06100795 |
| OPPOSITION | US2007166438 |
| OPPOSITION | US2967149 |
| OPPOSITION | US4112129 |
| OPPOSITION | US5597600 |
| OPPOSITION | WO2012023952 |
| OPPOSITION | WO2015100050 |
| SEARCH | WO2005037969 |
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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Sep 21, 2023
Sep 21, 2023
Sep 15, 2023
Sep 7, 2023
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Jun 30, 2023
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Jun 30, 2023
Jun 27, 2023
Refund of fees
Appeal
Jun 23, 2023
Jun 23, 2023
Jun 21, 2023
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Jun 20, 2023
Jun 19, 2023
(Electronic) Receipt
Appeal
Jun 19, 2023
Jun 19, 2023
Withdrawal of an appeal
Appeal
May 15, 2023
May 15, 2023
May 9, 2023
(Electronic) Receipt
Appeal
May 9, 2023
May 9, 2023
Notice of appeal
Appeal
Mar 8, 2023
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Means of redress
OPPO
Mar 3, 2023
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Jan 18, 2021
Dec 3, 2020
Decision to grant a European patent
Search/Exam
Nov 20, 2020
(Electronic) Receipt
Search/Exam
Nov 20, 2020
Filing of the translations of the claims
Search/Exam
Nov 20, 2020
French translation of claims
Search/Exam
Nov 20, 2020
German translation of the claims
Search/Exam
Nov 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 10, 2020
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Intention to grant (signatures)
Search/Exam
Jul 10, 2020
Text intended for grant (clean copy)
Search/Exam
Jul 10, 2020
Jun 8, 2020
(Electronic) Receipt
Search/Exam
Jun 8, 2020
Amended claims with annotations
Search/Exam
Jun 8, 2020
Amended description with annotations
Search/Exam
Jun 8, 2020
Claims
Search/Exam
Jun 8, 2020
Description
Search/Exam
Jun 8, 2020
French translation of claims
Search/Exam
Jun 8, 2020
German translation of the claims
Search/Exam
Jun 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 8, 2020
Jan 27, 2020
Jan 27, 2020
Jan 27, 2020
Intention to grant (signatures)
Search/Exam
Jan 27, 2020
Text intended for grant (clean copy)
Search/Exam
Jan 27, 2020
Nov 8, 2019
Examination started
Search/Exam
Aug 9, 2019
(Electronic) Receipt
Search/Exam
Aug 9, 2019
Aug 9, 2019
Amended claims with annotations
Search/Exam
Aug 9, 2019
Amendments received before examination
Search/Exam
Aug 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 25, 2019
Submission concerning representation
Search/Exam
Feb 12, 2019
Jan 24, 2019
Jan 24, 2019
European search opinion
Search/Exam
Jan 24, 2019
Information on Search Strategy
Search/Exam
Jan 24, 2019
Supplementary European search report
Search/Exam
Jan 15, 2019
Search started
Search/Exam
Jun 6, 2018
Apr 30, 2018
Apr 4, 2018
Communication to designated inventor
Search/Exam
Apr 4, 2018
Communication to designated inventor
Search/Exam
Apr 4, 2018
Communication to designated inventor
Search/Exam
Apr 4, 2018
Communication to designated inventor
Search/Exam
Apr 4, 2018
Communication to designated inventor
Search/Exam
Mar 22, 2018
Jan 12, 2018
Information on entry into European phase
Search/Exam
Nov 29, 2017
(Electronic) Receipt
Search/Exam
Nov 29, 2017
Nov 29, 2017
Amended claims with annotations
Search/Exam
Nov 29, 2017
Matter concerning the application
Search/Exam
Nov 29, 2017
Request for entry into the European phase
Search/Exam
Mar 27, 2017