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Mineral Composition Made From A Mixed Solid Phase Of Calcium And Magnesium Carbonates, Method Of Preparing Same And Use Thereof

Patent No. EP2828216 (titled "Mineral Composition Made From A Mixed Solid Phase Of Calcium And Magnesium Carbonates, Method Of Preparing Same And Use Thereof") was filed by Lhoist Recherche ET Developpement on Mar 22, 2013. The application was issued on Feb 17, 2016.

Patent Summary

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Patent Oppositions

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
OMYA	Nov 17, 2016	MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH

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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Jan 19, 2026
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Oct 13, 2025
Decision revoking the European Patent (patent proprietor)
Jul 8, 2025
Communication concerning surcharge and failure to observe time limit
Mar 3, 2025
Communication of bibliographic data
Mar 3, 2025
Communication with request to file translations
Feb 26, 2025
Maintenance of the patent with the documents specified in the final decision
Mar 16, 2023
Reply to a complaint
Mar 13, 2023
Complaint
Mar 13, 2023
Complaint
Oct 5, 2022
(Electronic) Receipt
Oct 5, 2022
Advice of delivery
Oct 5, 2022
Letter accompanying subsequently filed items
Sep 29, 2022
Decision of the Opposition Division and instruction
Sep 29, 2022
Druckexemplar in opposition procedure
Sep 29, 2022
Grounds for the decision (Annex) - opposition
Sep 29, 2022
Interlocutory decision in opposition proceedings
Sep 29, 2022
Means of redress
Sep 29, 2022
Transmittal of decision / summons - opposition
May 12, 2022
Decision of the Board of Appeal
May 12, 2022
F3032 Notification(s) of the decision
Feb 22, 2022
(Electronic) Receipt
Feb 22, 2022
Letter accompanying subsequently filed items
Feb 22, 2022
Letter relating to Appeal Procedure
Jan 25, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 5, 2021
(Electronic) Receipt
May 5, 2021
Letter accompanying subsequently filed items
May 5, 2021
Letter relating to Appeal Procedure
May 29, 2020
(Electronic) Receipt
May 29, 2020
Auxiliary request during Opposition procedure
May 29, 2020
Auxiliary request during Opposition procedure - 01
May 29, 2020
Cited document during appeal procedure
May 29, 2020
Cited document during appeal procedure
May 29, 2020
Cited document during appeal procedure
May 29, 2020
Description
May 29, 2020
Description
May 29, 2020
Letter accompanying subsequently filed items
May 29, 2020
Main request during Opposition procedure
May 29, 2020
Main request during Opposition procedure
May 29, 2020
Patent Document cited during the appeal procedure
May 29, 2020
Patent Document cited during the appeal procedure
May 29, 2020
Statement of grounds of appeal
Jan 29, 2020
F3204 Communication of the file number to the parties
Jan 23, 2020
(Electronic) Receipt
Jan 23, 2020
Letter accompanying subsequently filed items
Jan 23, 2020
Notice of appeal
Jan 9, 2020
(Electronic) Receipt
Jan 9, 2020
Advice of delivery
Jan 9, 2020
Letter accompanying subsequently filed items
Jan 3, 2020
Acknowledgement of a document
Jan 3, 2020
Decision of the Opposition Division and instruction
Jan 3, 2020
Druckexemplar in opposition procedure
Jan 3, 2020
Grounds for the decision (Annex) - opposition
Jan 3, 2020
Interlocutory decision in opposition proceedings
Jan 3, 2020
Interlocutory decision in opposition proceedings
Jan 3, 2020
Internal form - Opposition/addressees
Jan 3, 2020
Means of redress
Jan 3, 2020
Scanned annex to a communication - opposition procedure
Sep 20, 2019
(Electronic) Receipt
Sep 20, 2019
Amended description with annotations
Sep 20, 2019
Description
Sep 20, 2019
Letter accompanying subsequently filed items
Sep 20, 2019
Reply to an examination report in opposition proceedings
Jul 30, 2019
Annex to the communication - opposition
Jul 30, 2019
Communication inviting the parties to file observations
Jul 30, 2019
Communication inviting the parties to file observations
Jul 30, 2019
Internal form - Opposition/addressees
Feb 15, 2019
(Electronic) Receipt
Feb 15, 2019
Amended description with annotations
Feb 15, 2019
Amended description with annotations
Feb 15, 2019
Amended description with annotations
Feb 15, 2019
Description
Feb 15, 2019
Description
Feb 15, 2019
Letter accompanying subsequently filed items
Feb 15, 2019
Reply to an examination report in opposition proceedings
Dec 12, 2018
Annex to the communication - opposition
Dec 12, 2018
Communication inviting the parties to file observations
Dec 12, 2018
Communication inviting the parties to file observations
Dec 12, 2018
Internal form - Opposition/addressees
Dec 10, 2018
Annex to the communication - opposition
Dec 10, 2018
Internal form - Opposition/addressees
Dec 10, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 10, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 10, 2018
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 10, 2018
Provision of a copy of the minutes - opposition procedure
Dec 10, 2018
Scanned annex to a communication - opposition procedure
Nov 8, 2018
(Electronic) Receipt
Nov 8, 2018
Auxiliary request during Opposition procedure
Nov 8, 2018
Auxiliary request during Opposition procedure
Nov 8, 2018
Auxiliary request during Opposition procedure
Nov 8, 2018
Auxiliary request during Opposition procedure - 01
Nov 8, 2018
Auxiliary request during Opposition procedure - 02
Nov 8, 2018
Auxiliary request during Opposition procedure - 03
Nov 8, 2018
Letter accompanying subsequently filed items
Nov 8, 2018
Written submission in preparation to/during oral proceedings
Oct 8, 2018
Notification concerning the date of oral proceedings
Sep 25, 2018
Brief communication - Opposition proceedings
Sep 25, 2018
Brief communication - Opposition proceedings
Sep 19, 2018
(Electronic) Receipt
Sep 19, 2018
Withdrawal of an opposition
May 3, 2018
Brief communication - Opposition proceedings
May 3, 2018
Communication of amended entries
Apr 20, 2018
Advice of delivery
Apr 20, 2018
Request concerning representative opponent
Apr 11, 2018
Advice of delivery
Apr 5, 2018
Advice of delivery
Apr 4, 2018
Advice of delivery
Apr 3, 2018
Acknowledgement of a document
Apr 3, 2018
Acknowledgement of a document
Apr 3, 2018
Annex to the communication - opposition
Apr 3, 2018
Information concerning oral proceedings
Apr 3, 2018
Preparation for oral proceedings
Apr 3, 2018
Summons to attend oral proceedings
Apr 3, 2018
Summons to attend oral proceedings
May 18, 2017
Brief communication - Opposition proceedings
May 11, 2017
Drawings
May 11, 2017
Letter regarding the opposition procedure (no time limit)
May 11, 2017
Non-scannable object
May 11, 2017
Non-scannable object
May 2, 2017
Brief communication - Opposition proceedings
Apr 25, 2017
(Electronic) Receipt
Apr 25, 2017
Auxiliary request during Opposition procedure - 01
Apr 25, 2017
Auxiliary request during Opposition procedure - 02
Apr 25, 2017
Auxiliary request during Opposition procedure - 03
Apr 25, 2017
Auxiliary request during Opposition procedure - 04
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Citation in opposition procedure
Apr 25, 2017
Letter regarding the opposition procedure (no time limit)
Apr 25, 2017
Letter regarding the opposition procedure (no time limit)
Apr 25, 2017
Patent document cited during the opposition procedure
Apr 25, 2017
Patent document cited during the opposition procedure
Apr 25, 2017
Patent document cited during the opposition procedure
Apr 25, 2017
Patent document cited during the opposition procedure
Apr 25, 2017
Reply of the patent proprietor to the notice(s) of opposition
Dec 23, 2016
Communication of a notice of opposition and request to file observations
Dec 23, 2016
Notice of further oppositions to opponent(s)
Nov 25, 2016
Communication of a notice of opposition - first information to patent proprietor
Nov 17, 2016
(Electronic) Receipt
Nov 17, 2016
Citation in opposition procedure
Nov 17, 2016
Citation in opposition procedure
Nov 17, 2016
Citation in opposition procedure
Nov 17, 2016
Citation in opposition procedure
Nov 17, 2016
Notice of opposition
Nov 17, 2016
Notice of opposition
Nov 17, 2016
Patent document cited during the opposition procedure
Nov 17, 2016
Patent document cited during the opposition procedure
Nov 17, 2016
Patent document cited during the opposition procedure
Nov 17, 2016
Patent document cited during the opposition procedure
Nov 17, 2016
Patent document cited during the opposition procedure
Nov 17, 2016
Patent document cited during the opposition procedure
Mar 9, 2016
Refund of fees
Feb 17, 2016
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 21, 2016
Decision to grant a European patent
Dec 4, 2015
(Electronic) Receipt
Dec 4, 2015
English translation of the claims
Dec 4, 2015
Filing of the translations of the claims
Dec 4, 2015
German translation of the claims
Dec 4, 2015
Letter accompanying subsequently filed items
Sep 9, 2015
Bibliographic data of the European patent application
Sep 9, 2015
Communication about intention to grant a European patent
Sep 9, 2015
Intention to grant (signatures)
Sep 9, 2015
Text intended for grant
Jul 30, 2015
Examination started
Jan 8, 2015
Notification on forthcoming publication of bibliographic data
Dec 18, 2014
(Electronic) Receipt
Dec 18, 2014
Amended claims filed after receipt of (European) search report
Dec 18, 2014
Amended claims with annotations
Dec 18, 2014
Amendments received before examination
Dec 18, 2014
Letter accompanying subsequently filed items
Nov 28, 2014
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Nov 26, 2014
Communication to designated inventor
Nov 26, 2014
Communication to designated inventor
Nov 26, 2014
Communication to designated inventor
Nov 26, 2014
Communication to designated inventor
Nov 22, 2014
Priority search results copy provided by EPO
Oct 20, 2014
(Electronic) Receipt
Oct 20, 2014
Request for entry into the European phase
Oct 8, 2014
Copy of the international preliminary report on patentability
Jul 30, 2014
Information on entry into European phase
Nov 5, 2013
Priority document (electronically transmitted)
Nov 5, 2013
Priority document (electronically transmitted)
Nov 5, 2013
Priority document (electronically transmitted)
Sep 26, 2013
Copy of the international search report
Sep 26, 2013
Copy of the international search report
Sep 26, 2013
Published international application - A1
Jul 10, 2013
Written opinion of the ISA, boxes No. I to VIII
Jul 10, 2013
Written opinion of the ISA, cover sheet
Jul 10, 2013
Written opinion of the ISA, supplemental box
Mar 22, 2013
(Electronic) Receipt
Mar 22, 2013
Abstract
Mar 22, 2013
Claims
Mar 22, 2013
Description

EP2828216

LHOIST RECHERCHE ET DEVELOPPEMENT

Application Number: EP13711404A
Filing Date: Mar 22, 2013
Status: Revoked; Jan 16, 2026
Publication Date: Feb 17, 2016
External Links: Slate, Register , Google Patents