Durable Sleeve Bricks

Patent No. EP2103580 (titled "Durable Sleeve Bricks") was filed by Krosakiharima on Nov 6, 2007. The application was issued on Jan 7, 2026.

Patent Family

Statuses, jurisdictions and citation links are shared on request.

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
REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG	Jul 13, 2017	BERKENBRINK

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

Dec 11, 2025
Decision to maintain the European patent in amended form
Dec 11, 2025
Decision to maintain the European patent in amended form
Dec 4, 2025
(Electronic) Receipt
Dec 4, 2025
Filing of the translation of the amended claims
Dec 4, 2025
French translation of claims
Dec 4, 2025
German translation of the claims
Dec 4, 2025
Letter accompanying subsequently filed items
Oct 14, 2025
Communication of bibliographic data
Oct 14, 2025
Communication to opponent concerning maintenance
Oct 14, 2025
Communication with request to file translations
Oct 9, 2025
Maintenance of the patent with the documents specified in the final decision
Jul 7, 2025
Brief communication - Opposition proceedings
Jul 7, 2025
Brief communication - Opposition proceedings
Jul 7, 2025
Decision of the Opposition Division and instruction
Jul 7, 2025
Druckexemplar in opposition procedure
Jul 7, 2025
Grounds for the decision (Annex) - opposition
Jul 7, 2025
Interlocutory decision in opposition proceedings
Jul 7, 2025
Interlocutory decision in opposition proceedings
Jul 7, 2025
Means of redress
Apr 3, 2025
Brief communication - Opposition proceedings
Mar 31, 2025
(Electronic) Receipt
Mar 31, 2025
Letter accompanying subsequently filed items
Mar 31, 2025
Reply to an examination report in opposition proceedings
Mar 11, 2025
Brief communication - Opposition proceedings
Mar 11, 2025
Brief communication - Opposition proceedings
Mar 11, 2025
Communication inviting the parties to file observations
Mar 11, 2025
Communication inviting the parties to file observations
Oct 23, 2024
Brief communication - Opposition proceedings
Oct 18, 2024
(Electronic) Receipt
Oct 18, 2024
Letter accompanying subsequently filed items
Oct 18, 2024
Reply to an examination report in opposition proceedings
Oct 10, 2024
Brief communication - Opposition proceedings
Oct 10, 2024
Brief communication - Opposition proceedings
Oct 10, 2024
Communication inviting the parties to file observations
Oct 10, 2024
Communication inviting the parties to file observations
Jun 14, 2023
Brief communication - Opposition proceedings
Jun 9, 2023
(Electronic) Receipt
Jun 9, 2023
Amended description with annotations
Jun 9, 2023
Clean copy of description pages in the opposition procedure
Jun 9, 2023
Letter accompanying subsequently filed items
Jun 9, 2023
Reply to an examination report in opposition proceedings
Feb 7, 2023
Annex to the communication - opposition
Feb 7, 2023
Brief communication - Opposition proceedings
Feb 7, 2023
Brief communication - Opposition proceedings
Feb 7, 2023
Communication inviting the parties to file observations
Feb 7, 2023
Communication inviting the parties to file observations
Sep 30, 2022
Decision of the Board of Appeal
Sep 30, 2022
Decision of the Board of Appeal
Sep 30, 2022
F3032 Notification(s) of the decision
Sep 30, 2022
F3032 Notification(s) of the decision
Jun 13, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Jun 13, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Jun 8, 2022
F3014 Oral Proceedings: Order cancelling/postponing
Jun 8, 2022
F3345 Forwarding of submissions to parties
Jun 2, 2022
(Electronic) Receipt
Jun 2, 2022
Letter accompanying subsequently filed items
Jun 2, 2022
Letter dealing with oral proceedings during the appeal procedure
May 3, 2022
F3345 Forwarding of submissions to parties
Apr 28, 2022
(Electronic) Receipt
Apr 28, 2022
Letter accompanying subsequently filed items
Apr 28, 2022
Request for interpreters during oral proceedings
Apr 26, 2022
F3345 Forwarding of submissions to parties
Apr 21, 2022
(Electronic) Receipt
Apr 21, 2022
Letter accompanying subsequently filed items
Apr 21, 2022
Letter dealing with oral proceedings during the appeal procedure
Mar 31, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 31, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 8, 2022
F3011.1 Oral Proceedings: summons
Mar 8, 2022
F3011.1 Oral Proceedings: summons
Mar 3, 2022
F3010 Oral proceedings: order for summons
Aug 25, 2020
Composition of the board (T)
May 8, 2020
Brief communication - Opposition proceedings
May 8, 2020
Brief communication - Opposition proceedings
Apr 24, 2020
Annex to the communication - opposition
Jan 13, 2020
F3345 Forwarding of submissions to parties
Jan 7, 2020
F3345 Forwarding of submissions to parties
Dec 23, 2019
(Electronic) Receipt
Dec 23, 2019
Letter accompanying subsequently filed items
Dec 23, 2019
Letter relating to Appeal Procedure
Dec 20, 2019
Letter relating to Appeal Procedure
Oct 25, 2019
F3345 Forwarding of submissions to parties
Oct 17, 2019
Reply to appeal
Jun 11, 2019
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jun 4, 2019
(Electronic) Receipt
Jun 4, 2019
Letter accompanying subsequently filed items
Jun 4, 2019
Statement of grounds of appeal
Apr 17, 2019
F3204 Communication of the file number to the parties
Apr 17, 2019
F3204 Communication of the file number to the parties
Apr 3, 2019
Processing of an appeal
Mar 18, 2019
Brief communication - Opposition proceedings
Mar 8, 2019
(Electronic) Receipt
Mar 8, 2019
Letter accompanying subsequently filed items
Mar 8, 2019
Notice of appeal
Feb 26, 2019
Advice of delivery
Feb 26, 2019
Advice of delivery
Feb 12, 2019
(Electronic) Receipt
Feb 12, 2019
Letter accompanying subsequently filed items
Feb 12, 2019
Request for correction
Feb 6, 2019
Advice of delivery
Feb 4, 2019
Advice of delivery
Jan 31, 2019
Acknowledgement of a document
Jan 31, 2019
Acknowledgement of a document
Jan 31, 2019
Annex to the communication - opposition
Jan 31, 2019
Decision of the Opposition Division and instruction
Jan 31, 2019
Druckexemplar in opposition procedure
Jan 31, 2019
Grounds for the decision (Annex) - opposition
Jan 31, 2019
Interlocutory decision in opposition proceedings
Jan 31, 2019
Internal form - Opposition/addressees
Jan 31, 2019
Internal form - Opposition/addressees
Jan 31, 2019
Means of redress
Jan 31, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 31, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 31, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jan 31, 2019
Provision of a copy of the minutes - opposition procedure
Jan 31, 2019
Scanned annex to a communication - opposition procedure
Jan 31, 2019
Scanned annex to a communication - opposition procedure
Dec 18, 2018
Information about the result of oral proceedings
Dec 4, 2018
Brief communication - Opposition proceedings
Dec 4, 2018
Brief communication - Opposition proceedings
Nov 28, 2018
(Electronic) Receipt
Nov 28, 2018
Letter accompanying subsequently filed items
Nov 28, 2018
Letter regarding the opposition procedure (no time limit)
Nov 28, 2018
Patent document cited during the opposition procedure
Nov 28, 2018
Translation of the evidence during Opposition procedure
Oct 23, 2018
Brief communication - Opposition proceedings
Oct 18, 2018
(Electronic) Receipt
Oct 18, 2018
Citation in opposition procedure
Oct 18, 2018
Citation in opposition procedure
Oct 18, 2018
Citation in opposition procedure
Oct 18, 2018
Citation in opposition procedure
Oct 18, 2018
Letter accompanying subsequently filed items
Oct 18, 2018
Letter regarding the opposition procedure (no time limit)
Oct 16, 2018
Brief communication - Opposition proceedings
Oct 15, 2018
Brief communication - Opposition proceedings
Oct 11, 2018
(Electronic) Receipt
Oct 11, 2018
Letter accompanying subsequently filed items
Oct 11, 2018
Request for interpreters during oral proceedings
Oct 5, 2018
Request for interpreters during oral proceedings
Jun 21, 2018
Advice of delivery
May 28, 2018
Advice of delivery
May 28, 2018
Advice of delivery
May 22, 2018
Acknowledgement of a document
May 22, 2018
Acknowledgement of a document
May 22, 2018
Annex to the communication - opposition
May 22, 2018
Information concerning oral proceedings
May 22, 2018
Preparation for oral proceedings
May 22, 2018
Summons to attend oral proceedings
May 22, 2018
Summons to attend oral proceedings
Jan 10, 2018
Brief communication - Opposition proceedings
Dec 27, 2017
Amended claims with annotations
Dec 27, 2017
Amended claims with annotations
Dec 27, 2017
Amended claims with annotations
Dec 27, 2017
Any annexes (other than citation) to an opposition letter
Dec 27, 2017
Claims
Dec 27, 2017
Claims
Dec 27, 2017
Claims
Dec 27, 2017
Non-patent literature cited during the opposition procedure
Dec 27, 2017
Reply of the patent proprietor to the notice(s) of opposition
Aug 25, 2017
Communication of a notice of opposition and request to file observations
Aug 25, 2017
Notice of further oppositions to opponent(s)
Jul 20, 2017
Communication of a notice of opposition - first information to patent proprietor
Jul 13, 2017
Citation in opposition procedure
Jul 13, 2017
Citation in opposition procedure
Jul 13, 2017
Non-patent literature cited during the opposition procedure
Jul 13, 2017
Non-patent literature cited during the opposition procedure
Jul 13, 2017
Non-patent literature cited during the opposition procedure
Jul 13, 2017
Non-patent literature cited during the opposition procedure
Jul 13, 2017
Non-patent literature cited during the opposition procedure
Jul 13, 2017
Notice of opposition
Jul 13, 2017
Patent document cited during the opposition procedure
Jul 13, 2017
Payment of fees and costs
Jul 13, 2017
Payment of fees and costs
Oct 19, 2016
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 22, 2016
Decision to grant a European patent
Sep 14, 2016
Brief communication to applicant/representative
Sep 9, 2016
Bibliographic data of the European patent application
Aug 30, 2016
Filing of the translations of the claims
Aug 30, 2016
French translation of claims
Aug 30, 2016
German translation of the claims
Aug 30, 2016
Payment of fees and costs
Apr 22, 2016
Bibliographic data of the European patent application
Apr 22, 2016
Communication about intention to grant a European patent
Apr 22, 2016
Intention to grant (signatures)
Apr 22, 2016
Text intended for grant (clean copy)
Apr 22, 2016
Text intended for grant (version for approval)
Apr 14, 2016
Advice of delivery
Apr 7, 2016
Notification concerning the date of oral proceedings
Mar 24, 2016
Findings upon submissions relating to oral proceedings
Mar 22, 2016
Findings upon submissions relating to oral proceedings
Mar 18, 2016
Amended claims with annotations
Mar 18, 2016
Amended claims with annotations
Mar 18, 2016
Amended claims with annotations
Mar 18, 2016
Amended claims with annotations
Mar 18, 2016
Claims
Mar 18, 2016
Claims
Mar 18, 2016
Claims
Mar 18, 2016
Claims
Mar 18, 2016
Written submission in preparation to/during oral proceedings
Mar 4, 2016
Advice of delivery
Feb 23, 2016
Advice of delivery
Feb 23, 2016
Advice of delivery
Feb 19, 2016
Advice of delivery
Feb 12, 2016
Acknowledgement of a document
Feb 12, 2016
Summons to attend oral proceedings
Feb 11, 2016
Notification concerning the date of oral proceedings
Jan 26, 2016
Findings upon submissions relating to oral proceedings
Jan 7, 2016
Findings upon submissions relating to oral proceedings
Dec 23, 2015
Written submission in preparation to/during oral proceedings
Dec 22, 2015
Advice of delivery
Dec 17, 2015
Acknowledgement of a document
Dec 17, 2015
Annex to the communication
Dec 17, 2015
Preparation for oral proceedings
Dec 17, 2015
Summons to attend oral proceedings
Mar 12, 2015
Submission concerning representation
Jan 7, 2015
Submission concerning change of applicant's representative
Jan 28, 2013
Description
Jan 28, 2013
Reply to communication from the Examining Division
Oct 10, 2012
Annex to the communication
Oct 10, 2012
Communication from the Examining Division
Nov 28, 2011
Reply to Written Opinion prepared by the EPO
Jun 7, 2011
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
May 20, 2011
Communication regarding the transmission of the European search report
May 20, 2011
European search opinion
May 20, 2011
Supplementary European search report
Aug 26, 2009
Notification of forthcoming publication
Jul 27, 2009
Communication regarding possible amendment of claims/payment of claims fees
Jun 10, 2009
Translation of the international preliminary report on patentability
Jun 2, 2009
(Electronic) Receipt
Jun 2, 2009
Abstract
Jun 2, 2009
Claims
Jun 2, 2009
Description
Jun 2, 2009
Drawings
Jun 2, 2009
Request for entry into the European phase
May 27, 2009
Copy of the international preliminary report on patentability
Mar 20, 2009
Information on entry into European phase
Jun 5, 2008
Priority document (electronically transmitted)
May 15, 2008
Copy of the international search report
May 15, 2008
Copy of the translated international search report
May 15, 2008
Published international application - A1

EP2103580

KROSAKIHARIMA

Application Number: EP07831266A
Filing Date: Nov 6, 2007
Status: Patent Maintained As Amended; Dec 5, 2025
Publication Date: Jan 7, 2026
External Links: Slate, Register , Google Patents

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Durable Sleeve Bricks

Patent Summary

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Patent Oppositions

Dossier Documents

EP2103580