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The patent EP3086875 was granted to Imerys Filtration Minerals on Apr 8, 2020. The application was filed on Dec 15, 2014 under application number EP14875728A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2009181848 |
| DESCRIPTION | US2009261041 |
| DESCRIPTION | US2010285189 |
| DESCRIPTION | WO2013096578 |
| INTERNATIONAL-SEARCH-REPORT | US2005145579 |
| INTERNATIONAL-SEARCH-REPORT | US2010285189 |
| INTERNATIONAL-SEARCH-REPORT | US2012175805 |
| INTERNATIONAL-SEARCH-REPORT | US4488972 |
| INTERNATIONAL-SEARCH-REPORT | US5141526 |
| INTERNATIONAL-SEARCH-REPORT | WO2013014450 |
| INTERNATIONAL-SEARCH-REPORT | WO2013096578 |
| INTERNATIONAL-SEARCH-REPORT | WO2014004349 |
| OPPOSITION | US2010285189 |
| OPPOSITION | US2967149 |
| OPPOSITION | WO2013014450 |
| OPPOSITION | WO2013096578 |
| OPPOSITION | WO2015100050 |
| SEARCH | EP0790070 |
| SEARCH | US2009181848 |
| SEARCH | US2009261041 |
| SEARCH | US6712974 |
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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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 8, 2025
(Electronic) Receipt
Appeal
Apr 8, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Jun 19, 2023
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Reply to appeal
Appeal
Feb 16, 2023
(Electronic) Receipt
Appeal
Feb 16, 2023
Feb 7, 2023
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Nov 24, 2022
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Notice of appeal
Appeal
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Apr 21, 2020
Mar 12, 2020
Decision to grant a European patent
Search/Exam
Feb 27, 2020
(Electronic) Receipt
Search/Exam
Feb 27, 2020
Filing of the translations of the claims
Search/Exam
Feb 27, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 21, 2019
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Intention to grant (signatures)
Search/Exam
Oct 21, 2019
Text intended for grant (clean copy)
Search/Exam
Oct 21, 2019
Oct 2, 2019
(Electronic) Receipt
Search/Exam
Oct 2, 2019
Amended description with annotations
Search/Exam
Oct 2, 2019
Description
Search/Exam
Oct 2, 2019
French translation of claims
Search/Exam
Oct 2, 2019
German translation of the claims
Search/Exam
Oct 2, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 2, 2019
May 23, 2019
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Intention to grant (signatures)
Search/Exam
May 23, 2019
Text intended for grant (clean copy)
Search/Exam
May 23, 2019
Apr 25, 2019
Submission concerning representation
Search/Exam
Mar 21, 2019
(Electronic) Receipt
Search/Exam
Mar 21, 2019
Amended claims with annotations
Search/Exam
Mar 21, 2019
Claims
Search/Exam
Mar 21, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2019
Nov 12, 2018
Annex to the communication
Search/Exam
Nov 12, 2018
Communication from the Examining Division
Search/Exam
Nov 6, 2018
Examination started
Search/Exam
Feb 15, 2018
(Electronic) Receipt
Search/Exam
Feb 15, 2018
Feb 15, 2018
Amended claims with annotations
Search/Exam
Feb 15, 2018
Amendments received before examination
Search/Exam
Feb 15, 2018
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2017
Jul 25, 2017
Communication to designated inventor
Search/Exam
Jul 21, 2017
Jul 21, 2017
European search opinion
Search/Exam
Jul 21, 2017
Information on Search Strategy
Search/Exam
Jul 21, 2017
Supplementary European search report
Search/Exam
Jul 11, 2017
Search started
Search/Exam
Jul 7, 2017
(Electronic) Receipt
Search/Exam
Jul 7, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2017
Letter concerning the inventor
Search/Exam
Oct 12, 2016
Oct 6, 2016
Sep 26, 2016
Letter which had not been notified
Search/Exam
Aug 30, 2016
Aug 26, 2016
Communication to designated inventor
Search/Exam
Jul 26, 2016
(Electronic) Receipt
Search/Exam
Jul 26, 2016
Jul 26, 2016
Amended claims with annotations
Search/Exam
Jul 26, 2016
Amendments received before examination
Search/Exam
Jul 26, 2016
Request for entry into the European phase
Search/Exam
Jul 12, 2016
May 9, 2016
Information on entry into European phase
Search/Exam
Jul 23, 2015
Jul 2, 2015
Copy of the international search report
Search/Exam
Jul 2, 2015
Published international application - A1
Search/Exam