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The patent EP2723819 was granted to Omya on Mar 1, 2017. The application was filed on Jun 19, 2012 under application number EP12727883A. 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 |
|---|---|---|---|
| MINERALS | Dec 1, 2017 | ZBM PATENTS ZEA | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JPH0431314B |
| DESCRIPTION | US4888160 |
| INTERNATIONAL-SEARCH-REPORT | US2004241076 |
| INTERNATIONAL-SEARCH-REPORT | US6022517 |
| OPPOSITION | US2188663 |
| OPPOSITION | US4888160 |
| OPPOSITION | US5599388 |
| OPPOSITION | US5679220 |
| OPPOSITION | US6022517 |
| OPPOSITION | US6887351 |
| OPPOSITION | WO2008128545 |
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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Apr 30, 2018
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Claims
OPPO
Apr 24, 2018
Claims
OPPO
Apr 24, 2018
Apr 24, 2018
Dec 14, 2017
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Dec 1, 2017
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Jul 13, 2017
Jun 29, 2017
Letter concerning the inventor
Search/Exam
Mar 2, 2017
Feb 2, 2017
Decision to grant a European patent
Search/Exam
Jan 12, 2017
(Electronic) Receipt
Search/Exam
Jan 12, 2017
French translation of claims
Search/Exam
Jan 12, 2017
German translation of the claims
Search/Exam
Jan 12, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 5, 2016
Sep 5, 2016
Sep 5, 2016
Intention to grant (signatures)
Search/Exam
Sep 5, 2016
Text intended for grant (clean copy)
Search/Exam
Sep 5, 2016
Jul 14, 2016
Annex to the communication
Search/Exam
Jul 14, 2016
Consultation by telephone/in person
Search/Exam
Jul 14, 2016
Apr 25, 2016
Decision to allow further processing
Search/Exam
Apr 8, 2016
(Electronic) Receipt
Search/Exam
Apr 8, 2016
Amended claims with annotations
Search/Exam
Apr 8, 2016
Claims
Search/Exam
Apr 8, 2016
Description
Search/Exam
Apr 8, 2016
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2016
Request for further processing
Search/Exam
Feb 8, 2016
Jan 20, 2016
Dec 29, 2015
(Electronic) Receipt
Search/Exam
Dec 29, 2015
Nov 2, 2015
Oct 27, 2015
(Electronic) Receipt
Search/Exam
Oct 27, 2015
Jul 2, 2015
Annex to the communication
Search/Exam
Jul 2, 2015
Communication from the Examining Division
Search/Exam
Jun 10, 2015
Examination started
Search/Exam
Mar 23, 2015
Mar 17, 2015
(Electronic) Receipt
Search/Exam
Mar 17, 2015
Jan 14, 2015
Refund of fees
Search/Exam
Sep 23, 2014
(Electronic) Receipt
Search/Exam
Sep 23, 2014
Letter accompanying subsequently filed items
Search/Exam
Sep 8, 2014
Aug 21, 2014
Letter concerning the inventor
Search/Exam
Jul 7, 2014
(Electronic) Receipt
Search/Exam
Jul 7, 2014
Jul 7, 2014
Amended claims with annotations
Search/Exam
Jul 7, 2014
Amendments received before examination
Search/Exam
Jul 7, 2014
Letter accompanying subsequently filed items
Search/Exam
Apr 2, 2014
Jan 29, 2014
Jan 27, 2014
Communication to designated inventor
Search/Exam
Jan 27, 2014
Communication to designated inventor
Search/Exam
Jan 27, 2014
Communication to designated inventor
Search/Exam
Jan 22, 2014
Priority search results copy provided by EPO
Search/Exam
Jan 14, 2014
Comments on Written Opinion of ISA
Search/Exam
Jan 14, 2014
Dec 17, 2013
(Electronic) Receipt
Search/Exam
Dec 17, 2013
Request for entry into the European phase
Search/Exam
Nov 4, 2013
Information on entry into European phase
Search/Exam
Oct 1, 2013
Oct 1, 2013
Notification of the recording of a change
Search/Exam
Jan 16, 2013
Jan 16, 2013
Dec 27, 2012
Copy of the international search report
Search/Exam
Dec 27, 2012
Published international application - A1
Search/Exam
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Jun 19, 2012
(Electronic) Receipt
PCTRO
Jun 19, 2012
Abstract
PCTRO
Jun 19, 2012
Claims
PCTRO
Jun 19, 2012
Description
PCTRO
Jun 19, 2012
Drawings
PCTRO
Jun 19, 2012