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The patent EP2844640 was granted to Stamicarbon on Aug 29, 2018. The application was filed on May 2, 2013 under application number EP13724000A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| THYSSENKRUPP FERTILIZER TECHNOLGY | May 28, 2019 | GULDE & PARTNER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US4613697 |
| INTERNATIONAL-SEARCH-REPORT | WO03087043 |
| INTERNATIONAL-SEARCH-REPORT | WO2006004424 |
| INTERNATIONAL-SEARCH-REPORT | WO2009043365 |
| OPPOSITION | JP2000001466 |
| OPPOSITION | US3232983 |
| OPPOSITION | US4256662 |
| OPPOSITION | WO2010060535 |
| OPPOSITION | WO2011032786 |
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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Aug 27, 2025
Aug 27, 2025
Aug 27, 2025
May 30, 2025
May 30, 2025
May 30, 2025
May 26, 2025
(Electronic) Receipt
Appeal
May 26, 2025
May 26, 2025
May 26, 2025
May 15, 2025
May 12, 2025
(Electronic) Receipt
Appeal
May 12, 2025
May 12, 2025
Apr 28, 2025
Apr 25, 2025
(Electronic) Receipt
Appeal
Apr 25, 2025
Apr 25, 2025
Apr 14, 2025
Mar 11, 2025
Mar 7, 2025
(Electronic) Receipt
Appeal
Mar 7, 2025
Mar 7, 2025
Mar 4, 2025
Feb 26, 2025
(Electronic) Receipt
Appeal
Feb 26, 2025
Feb 26, 2025
Feb 19, 2025
(Electronic) Receipt
Appeal
Feb 19, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 27, 2025
(Electronic) Receipt
Appeal
Jan 27, 2025
Jan 27, 2025
Dec 20, 2024
Dec 20, 2024
Jul 29, 2024
Jul 24, 2024
(Electronic) Receipt
Appeal
Jul 24, 2024
Jul 24, 2024
Jul 17, 2024
Jul 12, 2024
(Electronic) Receipt
Appeal
Jul 12, 2024
Jul 12, 2024
Jun 28, 2024
Jun 28, 2024
Jun 25, 2024
Jun 25, 2024
Jun 19, 2024
(Electronic) Receipt
Appeal
Jun 19, 2024
Jun 19, 2024
Jun 17, 2024
Jun 14, 2024
Jun 14, 2024
Jun 12, 2024
(Electronic) Receipt
Appeal
Jun 12, 2024
Jun 12, 2024
Jun 11, 2024
Apr 17, 2024
Apr 16, 2024
Apr 11, 2024
(Electronic) Receipt
Appeal
Apr 11, 2024
Apr 11, 2024
May 2, 2023
Apr 24, 2023
(Electronic) Receipt
Appeal
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Mar 10, 2023
Mar 6, 2023
(Electronic) Receipt
Appeal
Mar 6, 2023
Mar 6, 2023
Reply to appeal
Appeal
Jan 3, 2023
Dec 21, 2022
(Electronic) Receipt
Appeal
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 9, 2022
Dec 7, 2022
(Electronic) Receipt
Appeal
Dec 7, 2022
Dec 7, 2022
Nov 7, 2022
Nov 1, 2022
(Electronic) Receipt
Appeal
Nov 1, 2022
Nov 1, 2022
Nov 1, 2022
Aug 19, 2022
Aug 19, 2022
Aug 12, 2022
(Electronic) Receipt
Appeal
Aug 12, 2022
Aug 12, 2022
Notice of appeal
Appeal
Jun 28, 2022
Jun 22, 2022
Jun 22, 2022
Jun 22, 2022
Jun 22, 2022
Means of redress
OPPO
Jun 22, 2022
Jun 22, 2022
Jun 22, 2022
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Oct 22, 2021
Aug 30, 2021
Aug 20, 2021
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Jul 12, 2021
Jul 2, 2021
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Jul 2, 2021
Jul 1, 2021
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Oct 28, 2020
Oct 28, 2020
Oct 26, 2020
Oct 20, 2020
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Oct 19, 2020
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Oct 19, 2020
Oct 19, 2020
Oct 14, 2020
Oct 14, 2020
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Sep 8, 2020
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Mar 31, 2020
Mar 24, 2020
Mar 18, 2020
Mar 18, 2020
Mar 18, 2020
Mar 18, 2020
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Mar 18, 2020
Summons (notice)
OPPO
Mar 18, 2020
Mar 18, 2020
Dec 16, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Dec 10, 2019
Aug 1, 2019
Aug 1, 2019
Jul 25, 2019
Jul 25, 2019
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Jul 25, 2019
Jun 27, 2019
Jun 3, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
May 28, 2019
Sep 10, 2018
Aug 2, 2018
Decision to grant a European patent
Search/Exam
Jul 16, 2018
(Electronic) Receipt
Search/Exam
Jul 16, 2018
Filing of the translations of the claims
Search/Exam
Jul 16, 2018
French translation of claims
Search/Exam
Jul 16, 2018
German translation of the claims
Search/Exam
Mar 16, 2018
Mar 16, 2018
Mar 16, 2018
Intention to grant (signatures)
Search/Exam
Mar 16, 2018
Text intended for grant (clean copy)
Search/Exam
Mar 16, 2018
Jul 14, 2017
(Electronic) Receipt
Search/Exam
Jul 14, 2017
Amended description with annotations
Search/Exam
Jul 14, 2017
Description
Search/Exam
Jul 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 14, 2017
Jul 6, 2017
Annex to the communication
Search/Exam
Jul 6, 2017
Communication from the Examining Division
Search/Exam
Jun 27, 2017
May 30, 2017
Non-patent literature filed by a third party
Search/Exam
May 30, 2017
Non-patent literature filed by a third party
Search/Exam
May 30, 2017
Non-patent literature filed by a third party
Search/Exam
May 30, 2017
Observations by third parties
Search/Exam
May 10, 2017
(Electronic) Receipt
Search/Exam
May 10, 2017
Amended claims with annotations
Search/Exam
May 10, 2017
Claims
Search/Exam
May 10, 2017
Letter accompanying subsequently filed items
Search/Exam
May 10, 2017
Mar 17, 2017
Mar 13, 2017
(Electronic) Receipt
Search/Exam
Mar 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 13, 2017
Nov 4, 2016
Annex to the communication
Search/Exam
Nov 4, 2016
Communication from the Examining Division
Search/Exam
Oct 28, 2016
Examination started
Search/Exam
Jul 5, 2016
May 31, 2016
May 10, 2016
Citation filed by a third party
Search/Exam
May 10, 2016
Observations by third parties
Search/Exam
Mar 10, 2016
Mar 8, 2016
Citation filed by a third party
Search/Exam
Mar 8, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 8, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 8, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 8, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 8, 2016
Observations by third parties
Search/Exam
Feb 26, 2016
Non-patent literature filed by a third party
Search/Exam
Feb 26, 2016
Observations by third parties
Search/Exam
Oct 8, 2015
Sep 29, 2015
Jun 17, 2015
(Electronic) Receipt
Search/Exam
Jun 17, 2015
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2015
Reply to Written Opinion prepared by the EPO
Search/Exam
May 19, 2015
May 11, 2015
Non-patent literature filed by a third party
Search/Exam
May 11, 2015
Non-patent literature filed by a third party
Search/Exam
May 11, 2015
Observations by third parties
Search/Exam
Feb 11, 2015
Dec 10, 2014
Dec 8, 2014
Communication to designated inventor
Search/Exam
Dec 8, 2014
Communication to designated inventor
Search/Exam
Dec 3, 2014
Priority search results copy provided by EPO
Search/Exam
Nov 18, 2014
(Electronic) Receipt
Search/Exam
Nov 18, 2014
Nov 18, 2014
Request for entry into the European phase
Search/Exam
Sep 12, 2014
Information on entry into European phase
Search/Exam
Dec 6, 2013
Nov 7, 2013
Copy of the international search report
Search/Exam
Nov 7, 2013
Published international application - A1
Search/Exam
Jul 1, 2013
Jun 12, 2013
Jun 12, 2013
Jun 12, 2013
May 2, 2013
Abstract
Search/Exam
May 2, 2013
Claims
Search/Exam
May 2, 2013
Description
Search/Exam
May 2, 2013
Drawings
Search/Exam