Acesulfame Potassium Compositions And Processes For Producing Same

Patent No. EP3319949 (titled "Acesulfame Potassium Compositions And Processes For Producing Same") was filed by Celanese on Sep 14, 2017. The application was issued on Jul 22, 2020.

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
ANHUI JINHE INDUSTRIAL	Apr 22, 2021	COHAUSZ & FLORACK
HAMMER	Apr 22, 2021	GRUNECKER PATENT

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 28, 2025
Decision of the Board of Appeal
Jan 28, 2025
F3032 Notification(s) of the decision
Jan 28, 2025
F3032 Notification(s) of the decision
Jan 28, 2025
F3032 Notification(s) of the decision
Nov 19, 2024
F3013 Oral Proceedings: Forwarding minutes
Nov 19, 2024
F3013 Oral Proceedings: Forwarding minutes
Nov 19, 2024
F3013 Oral Proceedings: Forwarding minutes
Nov 19, 2024
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Nov 7, 2024
F3345 Forwarding of submissions to parties
Nov 7, 2024
F3345 Forwarding of submissions to parties
Nov 5, 2024
(Electronic) Receipt
Nov 5, 2024
Letter accompanying subsequently filed items
Nov 5, 2024
Letter relating to Appeal Procedure
Nov 5, 2024
Non-Patent Literature cited during the appeal procedure
Oct 14, 2024
F3345 Forwarding of submissions to parties
Oct 14, 2024
F3345 Forwarding of submissions to parties
Oct 9, 2024
(Electronic) Receipt
Oct 9, 2024
Amended claims with annotations
Oct 9, 2024
Claims
Oct 9, 2024
F3345 Forwarding of submissions to parties
Oct 9, 2024
F3345 Forwarding of submissions to parties
Oct 9, 2024
Letter accompanying subsequently filed items
Oct 9, 2024
Letter relating to Appeal Procedure
Sep 13, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Sep 13, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Sep 13, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Aug 2, 2024
F3345 Forwarding of submissions to parties
Aug 1, 2024
(Electronic) Receipt
Aug 1, 2024
Citation in appeal procedure - 017
Aug 1, 2024
Letter accompanying subsequently filed items
Aug 1, 2024
Letter dealing with oral proceedings during the appeal procedure
Jun 24, 2024
F3345 Forwarding of submissions to parties
Jun 20, 2024
(Electronic) Receipt
Jun 20, 2024
Citation in appeal procedure - 015
Jun 20, 2024
Citation in appeal procedure - 015
Jun 20, 2024
Citation in appeal procedure - 015
Jun 20, 2024
Citation in appeal procedure - 015
Jun 20, 2024
Citation in appeal procedure - 015
Jun 20, 2024
Citation in appeal procedure - 016
Jun 20, 2024
F3345 Forwarding of submissions to parties
Jun 20, 2024
Letter accompanying subsequently filed items
Jun 20, 2024
Letter dealing with oral proceedings during the appeal procedure
Dec 4, 2023
F3345 Forwarding of submissions to parties
Dec 4, 2023
F3345 Forwarding of submissions to parties
Nov 28, 2023
(Electronic) Receipt
Nov 28, 2023
Letter dealing with oral proceedings during the appeal procedure
Nov 14, 2023
F3345 Forwarding of submissions to parties
Nov 14, 2023
F3345 Forwarding of submissions to parties
Nov 7, 2023
(Electronic) Receipt
Nov 7, 2023
Letter accompanying subsequently filed items
Nov 7, 2023
Request for interpreters during oral proceedings
Nov 6, 2023
Advice of delivery
Oct 26, 2023
F3011.2 Oral Proceedings: Summons VICO
Oct 26, 2023
F3011.2 Oral Proceedings: Summons VICO
Oct 26, 2023
F3011.2 Oral Proceedings: Summons VICO
Oct 23, 2023
F3010 Oral proceedings: order for summons
Apr 21, 2023
F3345 Forwarding of submissions to parties
Apr 21, 2023
F3345 Forwarding of submissions to parties
Apr 18, 2023
Consolidated list of documents cited in appeal procedure
Apr 17, 2023
(Electronic) Receipt
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Amended claims with annotations
Apr 17, 2023
Citation in appeal procedure - 013
Apr 17, 2023
Citation in appeal procedure - 014
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Claims
Apr 17, 2023
Letter accompanying subsequently filed items
Apr 17, 2023
Reply to appeal
Dec 6, 2022
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Dec 6, 2022
F3345 Forwarding of submissions to parties
Dec 6, 2022
F3345 Forwarding of submissions to parties
Dec 3, 2022
Composition of the board (T)
Nov 28, 2022
(Electronic) Receipt
Nov 28, 2022
Annexes (other than cited documents) regarding appeal procedure
Nov 28, 2022
Citation in appeal procedure - 012
Nov 28, 2022
Letter accompanying subsequently filed items
Nov 28, 2022
Statement of grounds of appeal
Nov 17, 2022
(Electronic) Receipt
Nov 17, 2022
Letter accompanying subsequently filed items
Nov 17, 2022
Statement of grounds of appeal
Oct 5, 2022
F3204 Communication of the file number to the parties
Oct 5, 2022
F3204 Communication of the file number to the parties
Oct 5, 2022
F3204 Communication of the file number to the parties
Sep 28, 2022
(Electronic) Receipt
Sep 28, 2022
Letter accompanying subsequently filed items
Sep 28, 2022
Notice of appeal
Sep 26, 2022
(Electronic) Receipt
Sep 26, 2022
Letter accompanying subsequently filed items
Sep 26, 2022
Notice of appeal
Jul 25, 2022
Advice of delivery
Jul 21, 2022
Advice of delivery
Jul 20, 2022
Advice of delivery
Jul 18, 2022
Annex to the communication - opposition
Jul 18, 2022
Decision of the Opposition Division and instruction
Jul 18, 2022
Decision of the Opposition Division and instruction
Jul 18, 2022
Decision rejecting the opposition
Jul 18, 2022
Decision rejecting the opposition
Jul 18, 2022
Decision rejecting the opposition
Jul 18, 2022
Grounds for the decision (Annex) - opposition
Jul 18, 2022
Means of redress
Jul 18, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 18, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 18, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jul 18, 2022
Provision of a copy of the minutes - opposition procedure
Jul 18, 2022
Provision of a copy of the minutes - opposition procedure
Jul 18, 2022
Provision of a copy of the minutes - opposition procedure
Jul 18, 2022
Provision of a copy of the minutes - opposition procedure
Jul 18, 2022
Transmittal of decision / summons - opposition
Jul 18, 2022
Transmittal of decision / summons - opposition
Jul 18, 2022
Transmittal of decision / summons - opposition
Jun 23, 2022
Information about the result of oral proceedings
May 2, 2022
Communication for party to proceedings/third party
May 2, 2022
Communication for party to proceedings/third party
May 2, 2022
Communication for party to proceedings/third party
May 2, 2022
Communication for party to proceedings/third party
May 2, 2022
Communication for party to proceedings/third party
Apr 27, 2022
(Electronic) Receipt
Apr 22, 2022
(Electronic) Receipt
Apr 22, 2022
(Electronic) Receipt
Apr 22, 2022
(Electronic) Receipt
Apr 22, 2022
(Electronic) Receipt
Apr 22, 2022
Any annexes (other than citation) to an opposition letter
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure
Apr 22, 2022
Auxiliary request during Opposition procedure - 06
Apr 22, 2022
Auxiliary request during Opposition procedure - 07
Apr 22, 2022
Auxiliary request during Opposition procedure - 08
Apr 22, 2022
Auxiliary request during Opposition procedure - 09
Apr 22, 2022
Auxiliary request during Opposition procedure - 10
Apr 22, 2022
Auxiliary request during Opposition procedure - 11
Apr 22, 2022
Auxiliary request during Opposition procedure - 12
Apr 22, 2022
Auxiliary request during Opposition procedure - 13
Apr 22, 2022
Auxiliary request during Opposition procedure - 14
Apr 22, 2022
Auxiliary request during Opposition procedure - 15
Apr 22, 2022
Auxiliary request during Opposition procedure - 16
Apr 22, 2022
Auxiliary request during Opposition procedure - 17
Apr 22, 2022
Auxiliary request during Opposition procedure - 18
Apr 22, 2022
Auxiliary request during Opposition procedure - 19
Apr 22, 2022
Auxiliary request during Opposition procedure - 20
Apr 22, 2022
Auxiliary request during Opposition procedure - 21
Apr 22, 2022
Auxiliary request during Opposition procedure - 22
Apr 22, 2022
Auxiliary request during Opposition procedure - 23
Apr 22, 2022
Auxiliary request during Opposition procedure - 24
Apr 22, 2022
Letter accompanying subsequently filed items
Apr 22, 2022
Letter accompanying subsequently filed items
Apr 22, 2022
Letter accompanying subsequently filed items
Apr 22, 2022
Letter accompanying subsequently filed items
Apr 22, 2022
Request for interpreters during oral proceedings
Apr 22, 2022
Written submission in preparation to/during oral proceedings
Apr 22, 2022
Written submission in preparation to/during oral proceedings
Apr 22, 2022
Written submission in preparation to/during oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Dec 20, 2021
Advice of delivery
Dec 17, 2021
Advice of delivery
Dec 13, 2021
Notification concerning the date of oral proceedings
Dec 13, 2021
Notification concerning the date of oral proceedings
Dec 13, 2021
Notification concerning the date of oral proceedings
Dec 13, 2021
Summons to attend oral proceedings
Dec 13, 2021
Summons to attend oral proceedings
Dec 13, 2021
Summons to attend oral proceedings
Dec 13, 2021
Transmittal of decision / summons - opposition
Dec 13, 2021
Transmittal of decision / summons - opposition
Dec 13, 2021
Transmittal of decision / summons - opposition
Nov 25, 2021
Brief communication - Opposition proceedings
Nov 25, 2021
Brief communication - Opposition proceedings
Nov 24, 2021
Advice of delivery
Nov 22, 2021
(Electronic) Receipt
Nov 22, 2021
Any annexes (other than citation) to an opposition letter
Nov 22, 2021
Letter accompanying subsequently filed items
Nov 22, 2021
Oral proceedings: Request for postponement
Nov 17, 2021
Advice of delivery
Nov 12, 2021
Annex to the communication - opposition
Nov 12, 2021
Information concerning oral proceedings
Nov 12, 2021
Summons to attend oral proceedings
Nov 12, 2021
Summons to attend oral proceedings
Nov 12, 2021
Summons to attend oral proceedings
Nov 12, 2021
Transmittal of decision / summons - opposition
Nov 12, 2021
Transmittal of decision / summons - opposition
Nov 12, 2021
Transmittal of decision / summons - opposition
Sep 28, 2021
Brief communication - Opposition proceedings
Sep 28, 2021
Brief communication - Opposition proceedings
Sep 21, 2021
(Electronic) Receipt
Sep 21, 2021
Auxiliary request during Opposition procedure
Sep 21, 2021
Auxiliary request during Opposition procedure - 01
Sep 21, 2021
Citation in opposition procedure - 011
Sep 21, 2021
Consolidated list of cited opposition documents
Sep 21, 2021
Letter accompanying subsequently filed items
Sep 21, 2021
Reply of the patent proprietor to the notice(s) of opposition
May 11, 2021
Communication of a notice of opposition and request to file observations
May 11, 2021
Notice of further oppositions to opponent(s)
May 11, 2021
Notice of further oppositions to opponent(s)
Apr 29, 2021
Communication of a notice of opposition - first information to patent proprietor
Apr 29, 2021
Communication of a notice of opposition - first information to patent proprietor
Apr 22, 2021
(Electronic) Receipt
Apr 22, 2021
(Electronic) Receipt
Apr 22, 2021
Any annexes (other than citation) to an opposition letter
Apr 22, 2021
Citation in opposition procedure - 001
Apr 22, 2021
Citation in opposition procedure - 002
Apr 22, 2021
Citation in opposition procedure - 003
Apr 22, 2021
Citation in opposition procedure - 004
Apr 22, 2021
Citation in opposition procedure - 005
Apr 22, 2021
Citation in opposition procedure - 006
Apr 22, 2021
Citation in opposition procedure - 007
Apr 22, 2021
Citation in opposition procedure - 007
Apr 22, 2021
Citation in opposition procedure - 008
Apr 22, 2021
Citation in opposition procedure - 008
Apr 22, 2021
Citation in opposition procedure - 009
Apr 22, 2021
Citation in opposition procedure - 010
Apr 22, 2021
International publication (Pamphlet)
Apr 22, 2021
Notice of opposition
Apr 22, 2021
Notice of opposition
Apr 22, 2021
Notice of opposition
Apr 22, 2021
Notice of opposition
Aug 3, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 25, 2020
Decision to grant a European patent
Jun 16, 2020
(Electronic) Receipt
Jun 16, 2020
Filing of the translations of the claims
Jun 16, 2020
French translation of claims
Jun 16, 2020
German translation of the claims
Jun 16, 2020
Letter accompanying subsequently filed items
Feb 11, 2020
Bibliographic data of the European patent application
Feb 11, 2020
Communication about intention to grant a European patent
Feb 11, 2020
Intention to grant (signatures)
Feb 11, 2020
Text intended for grant (clean copy)
Feb 11, 2020
Text intended for grant (version for approval)
Dec 9, 2019
(Electronic) Receipt
Dec 9, 2019
Amended claims with annotations
Dec 9, 2019
Amended description with annotations
Dec 9, 2019
Claims
Dec 9, 2019
Description
Dec 9, 2019
Letter accompanying subsequently filed items
Dec 9, 2019
Reply to communication from the Examining Division
Sep 17, 2019
Annex to the communication
Sep 17, 2019
Communication from the Examining Division
Aug 7, 2019
(Electronic) Receipt
Aug 7, 2019
Amended claims with annotations
Aug 7, 2019
Claims
Aug 7, 2019
Letter accompanying subsequently filed items
Aug 7, 2019
Reply to communication from the Examining Division
Apr 11, 2019
Copy of the international preliminary report on patentability
Mar 29, 2019
Annex to the communication
Mar 29, 2019
Communication from the Examining Division
Feb 13, 2019
(Electronic) Receipt
Feb 13, 2019
Amended claims with annotations
Feb 13, 2019
Claims
Feb 13, 2019
Letter accompanying subsequently filed items
Feb 13, 2019
Reply to communication from the Examining Division
Oct 12, 2018
Annex to the communication
Oct 12, 2018
Communication from the Examining Division
Oct 8, 2018
Examination started
May 25, 2018
(Electronic) Receipt
May 25, 2018
Amended claims filed after receipt of (European) search report
May 25, 2018
Amended claims with annotations
May 25, 2018
Amendments received before examination
May 25, 2018
Letter accompanying subsequently filed items
Apr 18, 2018
Notification on forthcoming publication of bibliographic data
Apr 18, 2018
Priority document (electronically transmitted)
Mar 29, 2018
Copy of the international search report
Mar 29, 2018
Copy of the international search report
Mar 29, 2018
Published international application - A1
Mar 29, 2018
Published international application - A1
Jan 31, 2018
(Electronic) Receipt
Jan 31, 2018
Letter accompanying subsequently filed items
Jan 31, 2018
Letter concerning the inventor
Jan 31, 2018
Notification of the recording of a change
Dec 15, 2017
Confirmation of receipt of (electronically) transmitted priority document
Dec 6, 2017
Notification of the recording of a change
Nov 30, 2017
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Nov 28, 2017
Communication to designated inventor
Nov 28, 2017
Communication to designated inventor
Nov 28, 2017
Communication to designated inventor
Nov 27, 2017
Priority document (electronically transmitted)
Nov 9, 2017
ISR: cited documents
Nov 8, 2017
Written opinion of the ISA, boxes No. I to VIII
Nov 8, 2017
Written opinion of the ISA, cover sheet
Nov 8, 2017
Written opinion of the ISA, supplemental box
Oct 25, 2017
(Electronic) Receipt
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Annex
Oct 25, 2017
Request for entry into the European phase
Oct 9, 2017
Notification of receipt of Search copy
Sep 25, 2017
Abstract
Sep 25, 2017
Annex
Sep 25, 2017
Claims
Sep 25, 2017
Description
Sep 25, 2017
Drawings
Sep 25, 2017
Fee calculation sheet for an international application
Sep 25, 2017
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Sep 25, 2017
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Sep 25, 2017
Request form for international application (copy for ISA/EP)

EP3319949

CELANESE

Application Number: EP17772252A
Filing Date: Sep 14, 2017
Status: Revoked; Feb 12, 2025
Publication Date: Jul 22, 2020
External Links: Slate, Register , Google Patents

IP Verse

Acesulfame Potassium Compositions And Processes For Producing Same

Patent Summary

Patent Family

Patent Oppositions (2)

Dossier Documents

EP3319949