Concrete Mixture For Mantle Block For Chimneys And Method

Patent No. EP3239435 (titled "Concrete Mixture For Mantle Block For Chimneys And Method") was filed by Schiedel on Mar 2, 2017. The application was issued on Sep 3, 2025.

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
ERLUS	Mar 2, 2022	LOUIS POHLAU LOHRENTZ

Dossier Documents

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 7, 2025
Decision to maintain the European patent in amended form
Aug 7, 2025
Decision to maintain the European patent in amended form
Jul 31, 2025
(Electronic) Receipt
Jul 31, 2025
English translation of the claims
Jul 31, 2025
Filing of the translation of the amended claims
Jul 31, 2025
French translation of claims
Jul 31, 2025
Letter accompanying subsequently filed items
May 15, 2025
Communication of bibliographic data
May 15, 2025
Communication to opponent concerning maintenance
May 15, 2025
Communication with request to file translations
May 12, 2025
Maintenance of the patent with the documents specified in the final decision
May 8, 2025
Refund of fees
May 7, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
May 7, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Apr 17, 2025
Composition of the board (T)
Apr 16, 2025
(Electronic) Receipt
Apr 16, 2025
Letter accompanying subsequently filed items
Apr 16, 2025
Withdrawal of an appeal
Feb 18, 2025
F3204 Communication of the file number to the parties
Feb 18, 2025
F3204 Communication of the file number to the parties
Feb 13, 2025
(Electronic) Receipt
Feb 13, 2025
Notice of appeal
Feb 13, 2025
Notice of appeal
Dec 23, 2024
Annex to the communication - opposition
Dec 23, 2024
Brief communication - Opposition proceedings
Dec 23, 2024
Brief communication - Opposition proceedings
Dec 23, 2024
Decision of the Opposition Division and instruction
Dec 23, 2024
Druckexemplar in opposition procedure
Dec 23, 2024
Grounds for the decision (Annex) - opposition
Dec 23, 2024
Interlocutory decision in opposition proceedings
Dec 23, 2024
Interlocutory decision in opposition proceedings
Dec 23, 2024
Means of redress
Dec 23, 2024
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 23, 2024
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 23, 2024
Provision of a copy of the minutes - opposition procedure
Dec 23, 2024
Provision of a copy of the minutes - opposition procedure
Dec 23, 2024
Scanned annex to a communication - opposition procedure
Dec 23, 2024
Scanned annex to a communication - opposition procedure
Nov 26, 2024
Information about the result of oral proceedings
Nov 4, 2024
Brief communication - Opposition proceedings
Oct 28, 2024
(Electronic) Receipt
Oct 28, 2024
Citation in opposition procedure - 006
Oct 28, 2024
Consolidated list of cited opposition documents
Oct 28, 2024
Consolidated list of cited opposition documents
Oct 28, 2024
Letter accompanying subsequently filed items
Oct 28, 2024
Reply from the opponent to submission of proprietor
Sep 30, 2024
Brief communication - Opposition proceedings
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure
Sep 25, 2024
Auxiliary request during Opposition procedure - 01
Sep 25, 2024
Auxiliary request during Opposition procedure - 02
Sep 25, 2024
Auxiliary request during Opposition procedure - 03
Sep 25, 2024
Auxiliary request during Opposition procedure - 04
Sep 25, 2024
Auxiliary request during Opposition procedure - 05
Sep 25, 2024
Auxiliary request during Opposition procedure - 06
Sep 25, 2024
Auxiliary request during Opposition procedure - 07
Sep 25, 2024
Auxiliary request during Opposition procedure - 08
Sep 25, 2024
Auxiliary request during Opposition procedure - 09
Sep 25, 2024
Letter accompanying subsequently filed items
Sep 25, 2024
Request for interpreters during oral proceedings
Sep 25, 2024
Written submission in preparation to/during oral proceedings
Sep 23, 2024
Brief communication - Opposition proceedings
Sep 18, 2024
(Electronic) Receipt
Sep 18, 2024
Letter accompanying subsequently filed items
Sep 18, 2024
Request for interpreters during oral proceedings
Apr 30, 2024
Annex to the communication - opposition
Apr 30, 2024
Brief communication - Opposition proceedings
Apr 30, 2024
Brief communication - Opposition proceedings
Apr 30, 2024
Information concerning oral proceedings
Apr 30, 2024
Scanned annex to a communication - opposition procedure
Apr 30, 2024
Summons to attend oral proceedings
Apr 30, 2024
Summons to attend oral proceedings
Jul 28, 2022
Brief communication - Opposition proceedings
Jul 25, 2022
(Electronic) Receipt
Jul 25, 2022
Auxiliary request during Opposition procedure
Jul 25, 2022
Auxiliary request during Opposition procedure - 01
Jul 25, 2022
Letter accompanying subsequently filed items
Jul 25, 2022
Reply of the patent proprietor to the notice(s) of opposition
Mar 21, 2022
Communication of a notice of opposition and request to file observations
Mar 21, 2022
Notice of further oppositions to opponent(s)
Mar 8, 2022
Communication of a notice of opposition - first information to patent proprietor
Mar 2, 2022
(Electronic) Receipt
Mar 2, 2022
Any annexes (other than citation) to an opposition letter
Mar 2, 2022
Citation in opposition procedure - 001
Mar 2, 2022
Citation in opposition procedure - 002
Mar 2, 2022
Citation in opposition procedure - 003
Mar 2, 2022
Citation in opposition procedure - 004
Mar 2, 2022
Citation in opposition procedure - 005
Mar 2, 2022
Notice of opposition
Mar 2, 2022
Notice of opposition
Jun 15, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
May 7, 2021
Decision to grant a European patent
Apr 27, 2021
(Electronic) Receipt
Apr 27, 2021
English translation of the claims
Apr 27, 2021
Filing of the translations of the claims
Apr 27, 2021
French translation of claims
Apr 27, 2021
Letter accompanying subsequently filed items
Feb 18, 2021
Bibliographic data of the European patent application
Feb 18, 2021
Communication about intention to grant a European patent
Feb 18, 2021
Intention to grant (signatures)
Feb 18, 2021
Text intended for grant (clean copy)
Feb 18, 2021
Text intended for grant (version for approval)
Dec 18, 2020
(Electronic) Receipt
Dec 18, 2020
Amended claims with annotations
Dec 18, 2020
Amended description with annotations
Dec 18, 2020
Claims
Dec 18, 2020
Description
Dec 18, 2020
Letter accompanying subsequently filed items
Dec 18, 2020
Reply to communication from the Examining Division
Dec 16, 2020
Annex to the communication
Dec 16, 2020
Consultation by telephone/in person (with time limit)
Dec 16, 2020
Result of consultation by telephone/in person
Sep 22, 2020
Response to enquiry for communication from the Examining Division
Sep 9, 2020
(Electronic) Receipt
Sep 9, 2020
Enquiry as to the processing of the file
Sep 9, 2020
Letter accompanying subsequently filed items
Jan 8, 2020
(Electronic) Receipt
Jan 8, 2020
Amended claims with annotations
Jan 8, 2020
Amended description with annotations
Jan 8, 2020
Claims
Jan 8, 2020
Description
Jan 8, 2020
Letter accompanying subsequently filed items
Jan 8, 2020
Reply to communication from the Examining Division
Oct 28, 2019
Grant of extension of time limit (examination procedure)
Oct 23, 2019
(Electronic) Receipt
Oct 23, 2019
Letter accompanying subsequently filed items
Oct 23, 2019
Request for extension of time limit to communication from the Examining Division
Jul 1, 2019
Annex to the communication
Jul 1, 2019
Communication from the Examining Division
Jun 24, 2019
Examination started
Nov 12, 2018
Response to enquiry for communication from the Examining Division
Oct 30, 2018
(Electronic) Receipt
Oct 30, 2018
Enquiry as to the processing of the file
Oct 30, 2018
Letter accompanying subsequently filed items
Apr 30, 2018
(Electronic) Receipt
Apr 30, 2018
Amended claims filed after receipt of (European) search report
Apr 30, 2018
Amended claims with annotations
Apr 30, 2018
Amendments received before examination
Apr 30, 2018
Letter accompanying subsequently filed items
Apr 30, 2018
Written request for examination
Nov 6, 2017
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Oct 5, 2017
Notification of forthcoming publication
Sep 15, 2017
Communication regarding the transmission of the European search report
Sep 15, 2017
European search opinion
Sep 15, 2017
European search report
Sep 15, 2017
Information on Search Strategy
Sep 4, 2017
Search started
May 9, 2017
Communication to designated inventor
May 2, 2017
(Electronic) Receipt
May 2, 2017
Letter accompanying subsequently filed items
May 2, 2017
Letter concerning the inventor
May 2, 2017
Note on telephone consultation
Apr 25, 2017
Communication to designated inventor
Apr 25, 2017
Communication to designated inventor
Apr 25, 2017
Communication to designated inventor
Mar 16, 2017
Letter concerning the priority
Mar 16, 2017
Priority document
Mar 2, 2017
(Electronic) Receipt
Mar 2, 2017
Abstract
Mar 2, 2017
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Mar 2, 2017
Claims
Mar 2, 2017
Description
Mar 2, 2017
Designation of inventor
Mar 2, 2017
Drawings
Mar 2, 2017
Letter accompanying subsequently filed items
Mar 2, 2017
Matter concerning the application
Mar 2, 2017
Priority search results
Mar 2, 2017
Request for grant of a European patent

EP3239435

SCHIEDEL

Application Number: EP17158903A
Filing Date: Mar 2, 2017
Status: Patent Maintained As Amended; Aug 1, 2025
Publication Date: Sep 3, 2025
External Links: Slate, Register , Google Patents

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Concrete Mixture For Mantle Block For Chimneys And Method

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Dossier Documents

EP3239435