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A Process For Converting Natural Calcium Carbonate Into Precipitated Calcium Carbonate

Patent No. EP3245159 (titled "A Process For Converting Natural Calcium Carbonate Into Precipitated Calcium Carbonate") was filed by Imerys USA on Jan 14, 2016. The application was issued on Jun 2, 2021.

Patent Summary

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Patent Oppositions

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Company	Opposition Date	Representative
OMYA	Mar 2, 2022	MAIWALD

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.

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Aug 25, 2022
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Aug 25, 2022
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Aug 22, 2022
Termination of the opposition proceedings with revocation of patent
May 11, 2022
Decision revoking the European patent
May 11, 2022
Decision revoking the European patent
May 10, 2022
Brief communication - Opposition proceedings
Apr 28, 2022
(Electronic) Receipt
Apr 28, 2022
Letter accompanying subsequently filed items
Apr 28, 2022
Request for revocation of patent
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
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
Citation in opposition procedure - 006
Mar 2, 2022
Citation in opposition procedure - 007
Mar 2, 2022
Citation in opposition procedure - 008
Mar 2, 2022
Citation in opposition procedure - 009
Mar 2, 2022
Citation in opposition procedure - 010
Mar 2, 2022
Consolidated list of cited opposition documents
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
May 4, 2021
Decision to allow further processing
Apr 23, 2021
(Electronic) Receipt
Apr 23, 2021
French translation of claims
Apr 23, 2021
German translation of the claims
Apr 23, 2021
Letter accompanying subsequently filed items
Apr 23, 2021
Request for further processing
Feb 16, 2021
Application deemed to be withdrawn ( translations of claims/payment missing)
Sep 15, 2020
Bibliographic data of the European patent application
Sep 15, 2020
Communication about intention to grant a European patent
Sep 15, 2020
Intention to grant (signatures)
Sep 15, 2020
Text intended for grant (clean copy)
Sep 15, 2020
Text intended for grant (version for approval)
Mar 30, 2020
(Electronic) Receipt
Mar 30, 2020
Letter accompanying subsequently filed items
Mar 30, 2020
Reply to communication from the Examining Division
Mar 3, 2020
Grant of extension of time limit (examination procedure)
Feb 27, 2020
(Electronic) Receipt
Feb 27, 2020
Request for extension of time limit to communication from the Examining Division
Oct 22, 2019
Annex to the communication
Oct 22, 2019
Communication from the Examining Division
Oct 16, 2019
Examination started
Apr 25, 2019
Submission concerning representation
Mar 26, 2019
(Electronic) Receipt
Mar 26, 2019
Amended claims filed after receipt of (European) search report
Mar 26, 2019
Amended claims with annotations
Mar 26, 2019
Amendments received before examination
Mar 26, 2019
Letter accompanying subsequently filed items
Sep 21, 2018
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Sep 5, 2018
Communication regarding the transmission of the European search report
Sep 5, 2018
European search opinion
Sep 5, 2018
Information on Search Strategy
Sep 5, 2018
Supplementary European search report
Aug 21, 2018
Search started
Oct 25, 2017
Notification on forthcoming publication of bibliographic data
Oct 19, 2017
Invitation to indicate correct address of inventor
Oct 13, 2017
Letter which had not been notified
Oct 12, 2017
Invitation to indicate correct address of inventor
Oct 5, 2017
Letter which had not been notified
Sep 15, 2017
Communication regarding possible amendment of the application/payment of claims fee
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Sep 13, 2017
Communication to designated inventor
Aug 14, 2017
(Electronic) Receipt
Aug 14, 2017
Amended claims filed after receipt of (European) search report
Aug 14, 2017
Amended claims with annotations
Aug 14, 2017
Amendments received before examination
Aug 14, 2017
Request for entry into the European phase
Aug 1, 2017
Copy of the international preliminary report on patentability
Jul 20, 2017
Notification of the recording of a change
Jul 20, 2017
Notification of the recording of a change
May 29, 2017
Information on entry into European phase
Aug 8, 2016
Priority document (electronically transmitted)
Aug 8, 2016
Priority document (electronically transmitted)
Aug 8, 2016
Priority document (electronically transmitted)
Aug 8, 2016
Priority document (electronically transmitted)
Jul 21, 2016
Copy of the international search report
Jul 21, 2016
Published international application - A1

EP3245159

IMERYS USA

Application Number: EP16737914A
Filing Date: Jan 14, 2016
Status: Revoked; Aug 26, 2022
Publication Date: Jun 2, 2021
External Links: Slate, EP3245159B1, Google Patents