IP Verse

Method For Producing Purified Silicic Acid Alkali Aqueous Solution And Silica Sol

Patent No. EP2754640 (titled "Method For Producing Purified Silicic Acid Alkali Aqueous Solution And Silica Sol") was filed by Nissan Chemical on Sep 5, 2012. The application was issued on Jun 27, 2018.

Patent Summary

Patent Family

Patent Oppositions (2)

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
NOURYON CHEMICALS	Mar 27, 2019	INGRASSIA
NOURYON CHEMICALS	Mar 27, 2019	LKGLOBAL UK

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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Apr 3, 2024
Refund of fees
Mar 28, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
Mar 28, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
Mar 28, 2024
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Mar 28, 2024
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Mar 25, 2024
(Electronic) Receipt
Mar 25, 2024
F3014 Oral Proceedings: Order cancelling/postponing
Mar 25, 2024
Letter accompanying subsequently filed items
Mar 25, 2024
Withdrawal of an appeal
Mar 5, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 5, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 22, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 22, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 16, 2023
(Electronic) Receipt
Nov 16, 2023
Annexes (other than cited documents) regarding appeal procedure
Nov 16, 2023
Letter accompanying subsequently filed items
Nov 16, 2023
Oral proceedings: Request for postponement
Oct 31, 2023
F3017 Oral Proceedings: Notification of cancellation/postponing
Oct 31, 2023
F3017 Oral Proceedings: Notification of cancellation/postponing
Oct 27, 2023
F3345 Forwarding of submissions to parties
Oct 26, 2023
F3014 Oral Proceedings: Order cancelling/postponing
Oct 24, 2023
(Electronic) Receipt
Oct 24, 2023
Annex
Oct 24, 2023
Letter accompanying subsequently filed items
Oct 24, 2023
Oral proceedings: Request for postponement
Oct 13, 2023
F3011.2 Oral Proceedings: Summons VICO
Oct 13, 2023
F3011.2 Oral Proceedings: Summons VICO
Oct 10, 2023
F3010 Oral proceedings: order for summons
Oct 10, 2023
F3303.16 Change of composition of the Board (T)
Feb 21, 2023
F3345 Forwarding of submissions to parties
Feb 15, 2023
(Electronic) Receipt
Feb 15, 2023
Amended claims with annotations
Feb 15, 2023
Amended claims with annotations
Feb 15, 2023
Amended claims with annotations
Feb 15, 2023
Auxiliary request during appeals procedure - 01
Feb 15, 2023
Auxiliary request during appeals procedure - 02
Feb 15, 2023
Auxiliary request during appeals procedure - 03
Feb 15, 2023
Letter accompanying subsequently filed items
Feb 15, 2023
Letter relating to Appeal Procedure
Jan 4, 2023
F3345 Forwarding of submissions to parties
Dec 23, 2022
(Electronic) Receipt
Dec 23, 2022
Letter accompanying subsequently filed items
Dec 23, 2022
Reply to appeal
Aug 16, 2022
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Aug 11, 2022
Composition of the board (T)
Aug 10, 2022
(Electronic) Receipt
Aug 10, 2022
Citation in appeal procedure - 036
Aug 10, 2022
Citation in appeal procedure - 037
Aug 10, 2022
Citation in appeal procedure - 037
Aug 10, 2022
Citation in appeal procedure - 038
Aug 10, 2022
Citation in appeal procedure - 038
Aug 10, 2022
Citation in appeal procedure - 039
Aug 10, 2022
Citation in appeal procedure - 040
Aug 10, 2022
Claims
Aug 10, 2022
Letter accompanying subsequently filed items
Aug 10, 2022
Statement of grounds of appeal
Jun 15, 2022
F3204 Communication of the file number to the parties
Jun 15, 2022
F3204 Communication of the file number to the parties
Jun 8, 2022
(Electronic) Receipt
Jun 8, 2022
Letter accompanying subsequently filed items
Jun 8, 2022
Notice of appeal
Apr 12, 2022
Advice of delivery
Apr 8, 2022
Annex to a communication
Apr 8, 2022
Annex to the communication - opposition
Apr 8, 2022
Decision of the Opposition Division and instruction
Apr 8, 2022
Decision revoking the European patent
Apr 8, 2022
Decision revoking the European patent
Apr 8, 2022
Grounds for the decision (Annex) - opposition
Apr 8, 2022
Means of redress
Apr 8, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 8, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 8, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 8, 2022
Provision of a copy of the minutes - opposition procedure
Apr 8, 2022
Provision of a copy of the minutes - opposition procedure
Apr 8, 2022
Transmittal of decision / summons - opposition
Apr 8, 2022
Transmittal of decision / summons - opposition
Feb 24, 2022
Information about the result of oral proceedings
Feb 21, 2022
Brief communication - Opposition proceedings
Feb 17, 2022
(Electronic) Receipt
Feb 17, 2022
Letter accompanying subsequently filed items
Feb 17, 2022
Written submission in preparation to/during oral proceedings
Feb 11, 2022
(Electronic) Receipt
Jan 11, 2022
(Electronic) Receipt
Jan 11, 2022
Brief communication - Opposition proceedings
Jan 11, 2022
Notification concerning the date of oral proceedings
Jan 11, 2022
Notification concerning the date of oral proceedings
Jan 4, 2022
Brief communication - Opposition proceedings
Dec 23, 2021
(Electronic) Receipt
Dec 23, 2021
Request for interpreters during oral proceedings
Dec 22, 2021
(Electronic) Receipt
Dec 22, 2021
Auxiliary request during Opposition procedure
Dec 22, 2021
Auxiliary request during Opposition procedure
Dec 22, 2021
Auxiliary request during Opposition procedure
Dec 22, 2021
Auxiliary request during Opposition procedure
Dec 22, 2021
Auxiliary request during Opposition procedure
Dec 22, 2021
Auxiliary request during Opposition procedure - 05
Dec 22, 2021
Auxiliary request during Opposition procedure - 06
Dec 22, 2021
Auxiliary request during Opposition procedure - 07
Dec 22, 2021
Auxiliary request during Opposition procedure - 08
Dec 22, 2021
Auxiliary request during Opposition procedure - 09
Dec 22, 2021
Citation in opposition procedure - 028
Dec 22, 2021
Citation in opposition procedure - 029
Dec 22, 2021
Citation in opposition procedure - 030
Dec 22, 2021
Citation in opposition procedure - 031
Dec 22, 2021
Citation in opposition procedure - 031
Dec 22, 2021
Citation in opposition procedure - 032
Dec 22, 2021
Citation in opposition procedure - 033
Dec 22, 2021
Citation in opposition procedure - 033
Dec 22, 2021
Citation in opposition procedure - 034
Dec 22, 2021
Citation in opposition procedure - 035
Dec 22, 2021
Citation in opposition procedure - 035
Dec 22, 2021
Citation in opposition procedure - 036
Dec 22, 2021
Citation in opposition procedure - 036
Dec 22, 2021
Consolidated list of cited opposition documents
Dec 22, 2021
Letter accompanying subsequently filed items
Dec 22, 2021
Written submission in preparation to/during oral proceedings
Mar 9, 2021
Advice of delivery
Mar 5, 2021
Advice of delivery
Mar 4, 2021
Acknowledgement of a document
Mar 4, 2021
Acknowledgement of a document
Mar 4, 2021
Information concerning oral proceedings
Mar 4, 2021
Notification concerning the date of oral proceedings
Mar 4, 2021
Notification concerning the date of oral proceedings
Mar 4, 2021
Summons to attend oral proceedings
Mar 4, 2021
Summons to attend oral proceedings
Feb 16, 2021
Brief communication - Opposition proceedings
Feb 8, 2021
(Electronic) Receipt
Feb 8, 2021
Any annexes (other than citation) to an opposition letter
Feb 8, 2021
Letter accompanying subsequently filed items
Feb 8, 2021
Oral proceedings: Request for postponement
Jan 12, 2021
Advice of delivery
Jan 12, 2021
Annex to the communication - opposition
Jan 12, 2021
Cover sheet for fax transmission
Jan 12, 2021
Information concerning oral proceedings
Jan 12, 2021
Summons to attend oral proceedings
Jan 12, 2021
Summons to attend oral proceedings
Jan 12, 2021
Transmittal of decision / summons - opposition
Jan 12, 2021
Transmittal of decision / summons - opposition
Nov 13, 2020
Brief communication - Opposition proceedings
Nov 12, 2020
Brief communication - Opposition proceedings
Nov 12, 2020
Notification concerning the date of oral proceedings
Nov 12, 2020
Notification concerning the date of oral proceedings
Nov 6, 2020
(Electronic) Receipt
Nov 6, 2020
Letter accompanying subsequently filed items
Nov 6, 2020
Oral proceedings: reply to date proposed
Nov 5, 2020
(Electronic) Receipt
Nov 5, 2020
Letter accompanying subsequently filed items
Nov 5, 2020
Oral proceedings: reply to date proposed
Oct 7, 2020
Brief communication - Opposition proceedings
Oct 7, 2020
Brief communication - Opposition proceedings
Oct 6, 2020
Notification concerning the date of oral proceedings
Oct 6, 2020
Notification concerning the date of oral proceedings
Oct 1, 2020
(Electronic) Receipt
Oct 1, 2020
Auxiliary request during Opposition procedure
Oct 1, 2020
Auxiliary request during Opposition procedure
Oct 1, 2020
Auxiliary request during Opposition procedure
Oct 1, 2020
Auxiliary request during Opposition procedure
Oct 1, 2020
Auxiliary request during Opposition procedure - 01
Oct 1, 2020
Auxiliary request during Opposition procedure - 02
Oct 1, 2020
Auxiliary request during Opposition procedure - 03
Oct 1, 2020
Auxiliary request during Opposition procedure - 04
Oct 1, 2020
Citation in opposition procedure - 024
Oct 1, 2020
Citation in opposition procedure - 025
Oct 1, 2020
Citation in opposition procedure - 026
Oct 1, 2020
Citation in opposition procedure - 027
Oct 1, 2020
Consolidated list of cited opposition documents
Oct 1, 2020
Letter accompanying subsequently filed items
Oct 1, 2020
Written submission in preparation to/during oral proceedings
Sep 30, 2020
(Electronic) Receipt
Sep 30, 2020
Citation in opposition procedure - 021
Sep 30, 2020
Citation in opposition procedure - 022
Sep 30, 2020
Citation in opposition procedure - 022
Sep 30, 2020
Citation in opposition procedure - 022
Sep 30, 2020
Citation in opposition procedure - 023
Sep 30, 2020
Letter accompanying subsequently filed items
Sep 30, 2020
Written submission in preparation to/during oral proceedings
Feb 6, 2020
Advice of delivery
Feb 3, 2020
Advice of delivery
Jan 30, 2020
Acknowledgement of a document
Jan 30, 2020
Acknowledgement of a document
Jan 30, 2020
Annex to the communication - opposition
Jan 30, 2020
Information concerning oral proceedings
Jan 30, 2020
Summons to attend oral proceedings
Jan 30, 2020
Summons to attend oral proceedings
Sep 17, 2019
Communication of amended entries
Sep 6, 2019
Request concerning representative opponent
Sep 2, 2019
Brief communication - Opposition proceedings
Sep 2, 2019
Brief communication - Opposition proceedings
Aug 27, 2019
Brief communication - Opposition proceedings
Aug 27, 2019
Brief communication - Opposition proceedings
Aug 27, 2019
Communication of amended entries
Aug 22, 2019
Citation in opposition procedure
Aug 22, 2019
Citation in opposition procedure - 016
Aug 22, 2019
Citation in opposition procedure - 017
Aug 22, 2019
Letter regarding the opposition procedure (no time limit)
Aug 22, 2019
Non-scannable object
Aug 22, 2019
Translation of the evidence during Opposition procedure
Aug 21, 2019
(Electronic) Receipt
Aug 21, 2019
Citation in opposition procedure - 013
Aug 21, 2019
Citation in opposition procedure - 014
Aug 21, 2019
Citation in opposition procedure - 014
Aug 21, 2019
Citation in opposition procedure - 014
Aug 21, 2019
Citation in opposition procedure - 015
Aug 21, 2019
Citation in opposition procedure - 015
Aug 21, 2019
Citation in opposition procedure - 016
Aug 21, 2019
Citation in opposition procedure - 016
Aug 21, 2019
Citation in opposition procedure - 016
Aug 21, 2019
Citation in opposition procedure - 017
Aug 21, 2019
Citation in opposition procedure - 018
Aug 21, 2019
Citation in opposition procedure - 019
Aug 21, 2019
Citation in opposition procedure - 019
Aug 21, 2019
Citation in opposition procedure - 020
Aug 21, 2019
Citation in opposition procedure - 020
Aug 21, 2019
Letter accompanying subsequently filed items
Aug 21, 2019
Reply of the patent proprietor to the notice(s) of opposition
Aug 8, 2019
Letter accompanying subsequently filed items
Aug 8, 2019
Request concerning representative opponent
Jul 12, 2019
Annexes in respect of a client data request
Jul 12, 2019
Annexes in respect of a client data request
Jul 12, 2019
Letter accompanying subsequently filed items
Jul 12, 2019
Request for change of name -opponent
Apr 11, 2019
Communication of a notice of opposition and request to file observations
Apr 11, 2019
Notice of further oppositions to opponent(s)
Apr 9, 2019
(Electronic) Receipt
Apr 9, 2019
Letter accompanying subsequently filed items
Apr 9, 2019
Letter regarding the opposition procedure (no time limit)
Apr 3, 2019
Communication of a notice of opposition - first information to patent proprietor
Mar 27, 2019
(Electronic) Receipt
Mar 27, 2019
Citation in opposition procedure - 001
Mar 27, 2019
Citation in opposition procedure - 002
Mar 27, 2019
Citation in opposition procedure - 003
Mar 27, 2019
Citation in opposition procedure - 004
Mar 27, 2019
Citation in opposition procedure - 005
Mar 27, 2019
Citation in opposition procedure - 006
Mar 27, 2019
Citation in opposition procedure - 007
Mar 27, 2019
Citation in opposition procedure - 008
Mar 27, 2019
Citation in opposition procedure - 009
Mar 27, 2019
Citation in opposition procedure - 010
Mar 27, 2019
Citation in opposition procedure - 011
Mar 27, 2019
Citation in opposition procedure - 012
Mar 27, 2019
Notice of opposition
Mar 27, 2019
Notice of opposition
Aug 20, 2018
Communication of the registration of a transfer or change of name and/or address
Aug 9, 2018
Submission concerning change of applicant's name
Jul 9, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 1, 2018
Decision to grant a European patent
May 18, 2018
Bibliographic data of the European patent application
May 18, 2018
Information about intention to grant a patent
May 18, 2018
Intention to grant (signatures)
May 18, 2018
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
May 18, 2018
Text intended for grant (clean copy)
May 18, 2018
Text intended for grant (version for approval)
May 11, 2018
(Electronic) Receipt
May 11, 2018
Claims
May 11, 2018
French translation of claims
May 11, 2018
German translation of the claims
May 11, 2018
Letter accompanying subsequently filed items
May 11, 2018
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
May 11, 2018
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Mar 16, 2018
Bibliographic data of the European patent application
Mar 16, 2018
Communication about intention to grant a European patent
Mar 16, 2018
Intention to grant (signatures)
Mar 16, 2018
Text intended for grant (clean copy)
Mar 16, 2018
Text intended for grant (version for approval)
Oct 2, 2017
Claims
Oct 2, 2017
Description
Oct 2, 2017
Reply to communication from the Examining Division
Aug 8, 2017
Grant of extension of time limit (examination procedure)
Jul 27, 2017
Request for extension of time limit to communication from the Examining Division
Mar 23, 2017
Annex to the communication
Mar 23, 2017
Communication from the Examining Division
Mar 17, 2017
Examination started
Nov 27, 2015
Amended claims filed after receipt of (European) search report
Nov 27, 2015
Amended description filed after receipt of (European) search report
Nov 27, 2015
Amendments received before examination
May 21, 2015
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
May 4, 2015
Communication regarding the transmission of the European search report
May 4, 2015
European search opinion
May 4, 2015
Supplementary European search report
Apr 20, 2015
Search started
Sep 26, 2014
Submission concerning representation
Jun 18, 2014
Notification of forthcoming publication
Apr 11, 2014
Communication regarding possible amendment of the application/payment of claims fee
Apr 9, 2014
Communication to designated inventor
Apr 9, 2014
Communication to designated inventor
Apr 9, 2014
Communication to designated inventor
Apr 9, 2014
Communication to designated inventor
Apr 9, 2014
Communication to designated inventor
Mar 26, 2014
Copy of the international preliminary report on patentability
Mar 26, 2014
Translation of the international preliminary report on patentability
Feb 12, 2014
(Electronic) Receipt
Feb 12, 2014
Abstract
Feb 12, 2014
Claims
Feb 12, 2014
Description
Feb 12, 2014
Request for entry into the European phase
Jan 17, 2014
Information on entry into European phase
Apr 3, 2013
Priority document (electronically transmitted)
Mar 14, 2013
Copy of the international search report
Mar 14, 2013
Copy of the translated international search report
Mar 14, 2013
International publication pamphlet

EP2754640

NISSAN CHEMICAL

Application Number: EP12829887A
Filing Date: Sep 5, 2012
Status: Revoked; Mar 29, 2024
Publication Date: Jun 27, 2018
External Links: Slate, Register , Google Patents