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The patent EP3274315 was granted to Hoffmann Green Cement on Jan 8, 2025. The application was filed on Mar 25, 2016 under application number EP16717425A. 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 |
|---|---|---|---|
| HOLCIM TECHNOLOGY | May 17, 2022 | REGIMBEAU | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2061732 |
| DESCRIPTION | FR2966823 |
| DESCRIPTION | US2012192765 |
| INTERNATIONAL-SEARCH-REPORT | US2012192765 |
| INTERNATIONAL-SEARCH-REPORT | WO0140135 |
| OPPOSITION | EP2727894 |
| OPPOSITION | KR101399952B |
| OPPOSITION | WO2007109862 |
| OPPOSITION | WO2010085537 |
| OPPOSITION | WO2011020975 |
| OPPOSITION | WO2012083255 |
| OPPOSITION | WO2014141051 |
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
OPPO
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Decision to grant a European patent
Search/Exam
Jul 6, 2021
(Electronic) Receipt
Search/Exam
Jul 6, 2021
English translation of the claims
Search/Exam
Jul 6, 2021
Filing of the translations of the claims
Search/Exam
Jul 6, 2021
German translation of the claims
Search/Exam
Jul 6, 2021
Letter accompanying subsequently filed items
Search/Exam
May 26, 2021
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Intention to grant (signatures)
Search/Exam
May 26, 2021
Text intended for grant (clean copy)
Search/Exam
May 26, 2021
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(Electronic) Receipt
Search/Exam
Dec 22, 2020
Amended claims with annotations
Search/Exam
Dec 22, 2020
Claims
Search/Exam
Dec 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2020
Sep 24, 2020
Annex to the communication
Search/Exam
Sep 24, 2020
Communication from the Examining Division
Search/Exam
Sep 15, 2020
Sep 9, 2020
Observations by third parties
Search/Exam
Jun 25, 2020
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Intention to grant (signatures)
Search/Exam
Jun 25, 2020
Text intended for grant (clean copy)
Search/Exam
Jun 25, 2020
Feb 4, 2020
Jan 30, 2020
(Electronic) Receipt
Search/Exam
Jan 30, 2020
(Electronic) Receipt
Search/Exam
Jan 30, 2020
Amended claims with annotations
Search/Exam
Jan 30, 2020
Amended description with annotations
Search/Exam
Jan 30, 2020
Annexes in respect of a client data request
Search/Exam
Jan 30, 2020
Claims
Search/Exam
Jan 30, 2020
Description
Search/Exam
Jan 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 30, 2020
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Oct 23, 2019
Annex to the communication
Search/Exam
Oct 23, 2019
Communication from the Examining Division
Search/Exam
Sep 12, 2019
(Electronic) Receipt
Search/Exam
Sep 12, 2019
Amended claims with annotations
Search/Exam
Sep 12, 2019
Claims
Search/Exam
Sep 12, 2019
Letter accompanying subsequently filed items
Search/Exam
Sep 12, 2019
Aug 26, 2019
Annex to the communication
Search/Exam
Aug 26, 2019
Communication from the Examining Division
Search/Exam
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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
Search/Exam
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(Electronic) Receipt
Search/Exam
Jul 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 4, 2019
Apr 23, 2019
Registration under Rule 23 EPC
Search/Exam
Apr 17, 2019
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Apr 1, 2019
Annexes in respect of a client data request
Search/Exam
Apr 1, 2019
Authorisation
Search/Exam
Apr 1, 2019
Mar 5, 2019
Annex to the communication
Search/Exam
Mar 5, 2019
Communication from the Examining Division
Search/Exam
Feb 22, 2019
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Annex
Search/Exam
Feb 7, 2019
Authorisation
Search/Exam
Feb 7, 2019
Letter to the Legal Division
Search/Exam
Feb 7, 2019
Payment of fees and costs
Search/Exam
Jan 17, 2019
(Electronic) Receipt
Search/Exam
Jan 17, 2019
Amended claims with annotations
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Jan 17, 2019
Claims
Search/Exam
Jan 17, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 17, 2019
Oct 31, 2018
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(Electronic) Receipt
Search/Exam
Oct 25, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2018
Jul 17, 2018
Annex to the communication
Search/Exam
Jul 17, 2018
Communication from the Examining Division
Search/Exam
Jul 12, 2018
Examination started
Search/Exam
Apr 27, 2018
(Electronic) Receipt
Search/Exam
Apr 27, 2018
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Amended claims with annotations
Search/Exam
Apr 27, 2018
Amendments received before examination
Search/Exam
Apr 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 6, 2018
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Communication to designated inventor
Search/Exam
Oct 27, 2017
Priority search results copy provided by EPO
Search/Exam
Oct 17, 2017
May 30, 2017
Information regarding early processing
Search/Exam
Apr 21, 2017
(Electronic) Receipt
Search/Exam
Apr 21, 2017
Matter concerning the application
Search/Exam
Apr 21, 2017
Request for entry into the European phase
Search/Exam
Oct 27, 2016
Oct 6, 2016
Copy of the international search report
Search/Exam
Oct 6, 2016
Copy of the international search report
Search/Exam
Oct 6, 2016
Published international application - A1
Search/Exam
Sep 6, 2016
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ISR: cited documents
PCTISA
Jun 10, 2016
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Mar 25, 2016
Abstract
PCTISA
Mar 25, 2016
Claims
PCTISA
Mar 25, 2016
Description
PCTISA