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The patent EP2872497 was granted to Khondrion on Oct 9, 2019. The application was filed on Jul 12, 2013 under application number EP13759838A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| SULFATEQ | Dec 8, 2017 | HOYNG ROKH MONEGIER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2005067303 |
| DESCRIPTION | US7179928 |
| DESCRIPTION | WO2012019029 |
| DESCRIPTION | WO2012019032 |
| INTERNATIONAL-SEARCH-REPORT | JP2002047272 |
| INTERNATIONAL-SEARCH-REPORT | US2009118257 |
| INTERNATIONAL-SEARCH-REPORT | US6727239 |
| INTERNATIONAL-SEARCH-REPORT | WO0181324 |
| OPPOSITION | JP2002047272 |
| OPPOSITION | US2005065099 |
| OPPOSITION | US5315017 |
| OPPOSITION | US6727239 |
| OPPOSITION | US7115657 |
| OPPOSITION | WO0181324 |
| OPPOSITION | WO2014098586 |
| OPPOSITION | WO8808424 |
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.
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Description
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Sep 12, 2019
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Jul 23, 2019
Refund of fees
OPPO
Jul 22, 2019
Jul 19, 2019
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Jul 3, 2019
Jun 28, 2019
Jun 27, 2019
(Electronic) Receipt
Appeal
Jun 27, 2019
Jun 27, 2019
Withdrawal of an appeal
Appeal
May 29, 2019
May 29, 2019
May 23, 2019
(Electronic) Receipt
Appeal
May 23, 2019
May 23, 2019
Notice of appeal
Appeal
May 23, 2019
Processing of an appeal
Appeal
Apr 17, 2019
Apr 11, 2019
Apr 1, 2019
Mar 19, 2019
Mar 13, 2019
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Means of redress
OPPO
Mar 13, 2019
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Claims
OPPO
Dec 11, 2018
Claims
OPPO
Dec 11, 2018
Claims
OPPO
Dec 11, 2018
Claims
OPPO
Dec 11, 2018
Claims
OPPO
Dec 11, 2018
Claims
OPPO
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Claims
OPPO
May 1, 2018
Claims
OPPO
May 1, 2018
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OPPO
May 1, 2018
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OPPO
May 1, 2018
Claims
OPPO
May 1, 2018
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Mar 9, 2017
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Decision to grant a European patent
Search/Exam
Jan 26, 2017
(Electronic) Receipt
Search/Exam
Jan 26, 2017
Filing of the translations of the claims
Search/Exam
Jan 26, 2017
French translation of claims
Search/Exam
Jan 26, 2017
German translation of the claims
Search/Exam
Jan 26, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 27, 2016
Sep 27, 2016
Sep 27, 2016
Intention to grant (signatures)
Search/Exam
Sep 27, 2016
Text intended for grant (clean copy)
Search/Exam
Sep 27, 2016
Jul 4, 2016
(Electronic) Receipt
Search/Exam
Jul 4, 2016
Amended claims with annotations
Search/Exam
Jul 4, 2016
Amended description with annotations
Search/Exam
Jul 4, 2016
Claims
Search/Exam
Jul 4, 2016
Description
Search/Exam
Jul 4, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 4, 2016
Apr 19, 2016
Apr 12, 2016
(Electronic) Receipt
Search/Exam
Apr 12, 2016
Letter accompanying subsequently filed items
Search/Exam
Apr 12, 2016
Jan 5, 2016
Annex to the communication
Search/Exam
Jan 5, 2016
Communication from the Examining Division
Search/Exam
Nov 18, 2015
Examination started
Search/Exam
Jun 23, 2015
Registration under Rule 23 EPC
Search/Exam
May 22, 2015
Letter accompanying subsequently filed items
Search/Exam
May 22, 2015
Letter to the Legal Division
Search/Exam
May 22, 2015
Payment of fees and costs
Search/Exam
Apr 22, 2015
Mar 17, 2015
Mar 10, 2015
Priority search results copy provided by EPO
Search/Exam
Feb 17, 2015
Communication to designated inventor
Search/Exam
Feb 17, 2015
Communication to designated inventor
Search/Exam
Feb 17, 2015
Communication to designated inventor
Search/Exam
Feb 17, 2015
Communication to designated inventor
Search/Exam
Jan 22, 2015
(Electronic) Receipt
Search/Exam
Jan 22, 2015
Annex
Search/Exam
Jan 22, 2015
Annex
Search/Exam
Jan 22, 2015
Annex
Search/Exam
Jan 22, 2015
Annex
Search/Exam
Jan 22, 2015
Request for entry into the European phase
Search/Exam
Jan 20, 2015
Jan 20, 2015
Dec 3, 2014
Notification of the recording of a change
Search/Exam
Nov 26, 2014
Notification of the recording of a change
Search/Exam
Nov 21, 2014
Information on entry into European phase
Search/Exam
Oct 10, 2014
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Notification of election of EPO
Search/Exam
Jun 26, 2014
Written opinion
PCT2
Jun 26, 2014
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PCT demand form
PCT2
May 12, 2014
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Jan 16, 2014
Copy of the international search report
Search/Exam
Jan 16, 2014
Published international application - A1
Search/Exam
Oct 4, 2013
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Jul 12, 2013
Abstract
PCTISA
Jul 12, 2013
Annex
PCTISA
Jul 12, 2013
Claims
PCTISA
Jul 12, 2013
Description
PCTISA
Jul 12, 2013
Drawings
PCTISA