The patent EP2527311 was granted to STO on Aug 17, 2022. The application was originally filed on May 22, 2012 under application number EP12168799A. The patent is currently recorded with a legal status of "Revoked".

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.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - Anonymous, "Calciumsulfat", Wikipedia, pages 1 - 4, Wikipedia, URL: https://de.wikipedia.org/w/index.php?title=Calciumsulfat&oldid=87275612, XP093241018 | - |
| OPPOSITION | - Anonymous, "Kaliumdiphosphat", Wikipedia, (20151111), pages 1 - 3, XP093241028 | - |
| OPPOSITION | - Anonymous, "Löslichkeitsprodukt-Konstanten", Generalic, Eni, (20241120), pages 1 - 6, Generalic, Eni, URL: https://www.periodni.com/de/loslichkeitsprodukt-konstante.html, XP093241025 | - |
| OPPOSITION | - Anonymous, "Mörtel", Wikipedia, pages 1 - 5, Wikipedia, URL: https://de.wikipedia.org/w/index.php?title=Mörtel&oldid=89172336 , XP093241031 | - |
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Date
Description
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May 19, 2025
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Means of redress
OPPO
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Authorisation
OPPO
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Aug 30, 2022
Jul 21, 2022
Decision to grant a European patent
Search/Exam
Jul 11, 2022
(Electronic) Receipt
Search/Exam
Jul 11, 2022
English translation of the claims
Search/Exam
Jul 11, 2022
Filing of the translations of the claims
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Jul 11, 2022
French translation of claims
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Jul 11, 2022
Letter accompanying subsequently filed items
Search/Exam
May 10, 2022
May 10, 2022
May 10, 2022
Intention to grant (signatures)
Search/Exam
May 10, 2022
Text intended for grant (clean copy)
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May 10, 2022
Jun 21, 2021
Document concerning representation
Search/Exam
Jan 27, 2020
(Electronic) Receipt
Search/Exam
Jan 27, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 27, 2020
Dec 19, 2019
Annex to the communication
Search/Exam
Dec 19, 2019
Communication from the Examining Division
Search/Exam
Jul 5, 2019
Jun 24, 2019
(Electronic) Receipt
Search/Exam
Jun 24, 2019
Enquiry as to the processing of the file
Search/Exam
Jun 24, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 22, 2018
(Electronic) Receipt
Search/Exam
Jan 22, 2018
Claims
Search/Exam
Jan 22, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 22, 2018
Oct 10, 2017
Annex to the communication
Search/Exam
Oct 10, 2017
Communication from the Examining Division
Search/Exam
Jun 6, 2017
May 24, 2017
(Electronic) Receipt
Search/Exam
May 24, 2017
Enquiry as to the processing of the file
Search/Exam
May 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 26, 2016
Submission concerning representation
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Sep 21, 2016
Submission concerning representation
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Dec 1, 2015
(Electronic) Receipt
Search/Exam
Dec 1, 2015
Letter accompanying subsequently filed items
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Dec 1, 2015
Oct 9, 2015
Annex to the communication
Search/Exam
Oct 9, 2015
Communication from the Examining Division
Search/Exam
Oct 2, 2015
Examination started
Search/Exam
Apr 23, 2015
Apr 20, 2015
Apr 10, 2014
Apr 7, 2014
Apr 4, 2014
Mar 21, 2013
(Electronic) Receipt
Search/Exam
Mar 21, 2013
Mar 21, 2013
Amended claims with annotations
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Mar 21, 2013
Amendments received before examination
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Mar 21, 2013
Letter accompanying subsequently filed items
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Mar 21, 2013
Maintenance of the application
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Dec 3, 2012
Oct 31, 2012
Notification of forthcoming publication
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Sep 3, 2012
Sep 3, 2012
European search opinion
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Sep 3, 2012
European search report
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Jul 10, 2012
Jun 28, 2012
Letter concerning the priority
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Jun 28, 2012
Priority document
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May 22, 2012
Abstract
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May 22, 2012
May 22, 2012
Claims
Search/Exam
May 22, 2012
Description
Search/Exam
May 22, 2012
Designation of inventor
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May 22, 2012
Designation of inventor
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May 22, 2012
Designation of inventor
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May 22, 2012
Designation of inventor
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May 22, 2012
Designation of inventor
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May 22, 2012
Priority search results
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May 22, 2012
Request for grant of a European patent
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