The weekly litigation news digest is live. Subscribe now
The patent EP3237353 was granted to Holcim Technology on Apr 20, 2022. The application was filed on Dec 18, 2015 under application number EP15823671A. 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 |
|---|---|---|---|
| MASTER BUILDERS SOLUTIONS DEUTSCHLAND | Jan 19, 2023 | BANSE & STEGLICH PATENTANWALTE PARTMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1740649 |
| DESCRIPTION | FR2708592 |
| DESCRIPTION | WO2006018569 |
| INTERNATIONAL-SEARCH-REPORT | FR2986790 |
| INTERNATIONAL-SEARCH-REPORT | JP2008189526 |
| INTERNATIONAL-SEARCH-REPORT | WO2007134349 |
| OPPOSITION | CN103011880 |
| OPPOSITION | US2017349498 |
| OPPOSITION | US3729328 |
| OPPOSITION | WO2007068127 |
| OPPOSITION | WO2007134349 |
| OPPOSITION | WO2013150148 |
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
Get instant alerts for new documents
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Means of redress
OPPO
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Nov 5, 2025
Sep 24, 2025
Aug 29, 2025
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Jul 30, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 16, 2025
Jul 8, 2025
Jul 8, 2025
Jul 8, 2025
Apr 3, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Mar 19, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Mar 12, 2024
Jan 30, 2024
Jan 23, 2024
Jan 23, 2024
Jan 23, 2024
Jan 23, 2024
Jan 23, 2024
Jun 20, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Feb 1, 2023
Feb 1, 2023
Jan 25, 2023
Jan 20, 2023
Jan 20, 2023
Jan 20, 2023
Jan 20, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
May 4, 2022
Mar 24, 2022
Decision to grant a European patent
Search/Exam
Mar 11, 2022
(Electronic) Receipt
Search/Exam
Mar 11, 2022
Filing of the translations of the claims
Search/Exam
Mar 11, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Intention to grant (signatures)
Search/Exam
Nov 24, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 24, 2021
Oct 22, 2021
(Electronic) Receipt
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
English translation of the claims
Search/Exam
Oct 22, 2021
German translation of the claims
Search/Exam
Oct 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 22, 2021
Jul 21, 2021
Jul 21, 2021
Jul 21, 2021
Intention to grant (signatures)
Search/Exam
Jul 21, 2021
Text intended for grant (clean copy)
Search/Exam
Jul 21, 2021
May 18, 2021
May 11, 2021
Letter accompanying subsequently filed items
Search/Exam
May 11, 2021
Jul 20, 2020
Jul 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 13, 2020
Jul 13, 2020
Jul 10, 2020
(Electronic) Receipt
Search/Exam
Jul 10, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 10, 2020
May 28, 2020
May 22, 2020
(Electronic) Receipt
Search/Exam
May 22, 2020
Letter accompanying subsequently filed items
Search/Exam
May 22, 2020
Jan 21, 2020
Annex to the communication
Search/Exam
Jan 21, 2020
Communication from the Examining Division
Search/Exam
Jan 13, 2020
Examination started
Search/Exam
Oct 25, 2018
Oct 17, 2018
Annexes in respect of a client data request
Search/Exam
Oct 17, 2018
Annexes in respect of a client data request
Search/Exam
Oct 17, 2018
Feb 2, 2018
(Electronic) Receipt
Search/Exam
Feb 2, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 2, 2018
Reply to Written Opinion prepared by the EPO
Search/Exam
Oct 5, 2017
Aug 1, 2017
Jul 28, 2017
Communication to designated inventor
Search/Exam
Jul 28, 2017
Communication to designated inventor
Search/Exam
Jul 28, 2017
Communication to designated inventor
Search/Exam
Jul 25, 2017
Priority search results copy provided by EPO
Search/Exam
Jul 12, 2017
(Electronic) Receipt
Search/Exam
Jul 12, 2017
Request for entry into the European phase
Search/Exam
Jul 10, 2017
May 8, 2017
Information on entry into European phase
Search/Exam
Jul 21, 2016
Jun 30, 2016
Copy of the international search report
Search/Exam
Jun 30, 2016
Published international application - A1
Search/Exam
Mar 1, 2016
ISR: cited documents
PCTISA
Mar 1, 2016
Feb 29, 2016
Feb 29, 2016
Feb 29, 2016
Feb 2, 2016
Jan 14, 2016
Jan 14, 2016
Dec 18, 2015
Abstract
PCTISA
Dec 18, 2015
Claims
PCTISA
Dec 18, 2015
Description
PCTISA
Dec 18, 2015
Drawings
PCTISA