Process For Producing Acesulfame Potassium

Patent No. EP2861569 (titled "Process For Producing Acesulfame Potassium") was filed by Celanese Sales Germany on Jun 6, 2013. The application was issued on Feb 8, 2017.

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	Nov 8, 2017	COHAUSZ & FLORACK
SUZHOU HOPE TECHNOLOGY	Nov 8, 2017	COHAUSZ & FLORACK
VITASWEET	Nov 8, 2017	COHAUSZ & FLORACK

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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Jul 19, 2021
Fax relating to Appeal procedure
Jul 12, 2021
F3032 Notification(s) of the decision
Jul 12, 2021
F3032 Notification(s) of the decision
Jul 12, 2021
F3032 Notification(s) of the decision
Jul 12, 2021
F3032 Notification(s) of the decision
Jul 7, 2021
Decision of the Board of Appeal
Jul 7, 2021
Termination of the opposition proceedings with revocation of patent
May 28, 2021
F3013 Oral Proceedings: Forwarding minutes
May 28, 2021
F3013 Oral Proceedings: Forwarding minutes
May 28, 2021
F3013 Oral Proceedings: Forwarding minutes
May 28, 2021
F3013 Oral Proceedings: Forwarding minutes
May 25, 2021
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
May 17, 2021
Amended claims with annotations
May 17, 2021
Amended claims with annotations
May 14, 2021
F3345 Forwarding of submissions to parties
May 14, 2021
F3345 Forwarding of submissions to parties
May 14, 2021
F3345 Forwarding of submissions to parties
May 14, 2021
F3345 Forwarding of submissions to parties
May 14, 2021
F3345 Forwarding of submissions to parties
May 14, 2021
F3345 Forwarding of submissions to parties
May 7, 2021
(Electronic) Receipt
May 7, 2021
(Electronic) Receipt
May 7, 2021
Letter accompanying subsequently filed items
May 7, 2021
Letter accompanying subsequently filed items
May 7, 2021
Letter dealing with oral proceedings during the appeal procedure
May 7, 2021
Letter dealing with oral proceedings during the appeal procedure
Apr 22, 2021
F3345 Forwarding of submissions to parties
Apr 21, 2021
F3345 Forwarding of submissions to parties
Apr 21, 2021
F3345 Forwarding of submissions to parties
Apr 21, 2021
F3345 Forwarding of submissions to parties
Apr 16, 2021
(Electronic) Receipt
Apr 16, 2021
Letter accompanying subsequently filed items
Apr 16, 2021
Letter dealing with oral proceedings during the appeal procedure
Apr 16, 2021
Letter dealing with oral proceedings during the appeal procedure
Apr 16, 2021
Letter dealing with oral proceedings during the appeal procedure
Apr 16, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 23, 2021
F3345 Forwarding of submissions to parties
Mar 18, 2021
Consolidated list of documents cited in appeal procedure
Mar 17, 2021
(Electronic) Receipt
Mar 17, 2021
(Electronic) Receipt
Mar 17, 2021
Citation in appeal procedure - 007
Mar 17, 2021
Citation in appeal procedure - 007
Mar 17, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 17, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 17, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 17, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 17, 2021
Written submission in preparation to/during oral proceedings
Mar 17, 2021
Written submission in preparation to/during oral proceedings
Dec 16, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 16, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 16, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 16, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jul 14, 2020
Fax relating to Appeal procedure
Jul 8, 2020
Fax relating to Appeal procedure
Jul 8, 2020
Fax relating to Appeal procedure
Jul 8, 2020
Fax relating to Appeal procedure
Jul 3, 2020
Acknowledgement of a document
Jul 3, 2020
Acknowledgement of a document
Jul 3, 2020
Acknowledgement of a document
Jul 3, 2020
Acknowledgement of a document
Jul 3, 2020
F3011.1 Oral Proceedings: summons
Jul 3, 2020
F3011.1 Oral Proceedings: summons
Jul 3, 2020
F3011.1 Oral Proceedings: summons
Jul 3, 2020
F3011.1 Oral Proceedings: summons
Jun 30, 2020
F3010 Oral proceedings: order for summons
May 27, 2020
F3345 Forwarding of submissions to parties
May 27, 2020
F3345 Forwarding of submissions to parties
May 27, 2020
F3345 Forwarding of submissions to parties
May 27, 2020
F3345 Forwarding of submissions to parties
May 20, 2020
(Electronic) Receipt
May 20, 2020
(Electronic) Receipt
May 20, 2020
Annexes filed during the Appeal procedure
May 20, 2020
Annexes filed during the Appeal procedure
May 20, 2020
Annexes filed during the Appeal procedure
May 20, 2020
Annexes filed during the Appeal procedure
May 20, 2020
Citation in appeal procedure - 003
May 20, 2020
Citation in appeal procedure - 004
May 20, 2020
Citation in appeal procedure - 005
May 20, 2020
Citation in appeal procedure - 006
May 20, 2020
Letter regarding the opposition procedure (no time limit)
May 20, 2020
Letter regarding the opposition procedure (no time limit)
May 20, 2020
Reply to appeal
May 20, 2020
Reply to appeal
May 20, 2020
Reply to appeal
May 20, 2020
Reply to appeal
Jan 16, 2020
Composition of the board (T)
Jan 10, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jan 10, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jan 10, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Dec 20, 2019
(Electronic) Receipt
Dec 20, 2019
Amended claims with annotations
Dec 20, 2019
Annexes (other than cited documents) regarding appeal procedure
Dec 20, 2019
Annexes (other than cited documents) regarding appeal procedure
Dec 20, 2019
Annexes (other than cited documents) regarding appeal procedure
Dec 20, 2019
Citation in appeal procedure - 001
Dec 20, 2019
Citation in appeal procedure - 002
Dec 20, 2019
Claims
Dec 20, 2019
Letter accompanying subsequently filed items
Dec 20, 2019
Statement of grounds of appeal
Oct 16, 2019
F3204 Communication of the file number to the parties
Oct 16, 2019
F3204 Communication of the file number to the parties
Oct 16, 2019
F3204 Communication of the file number to the parties
Oct 10, 2019
(Electronic) Receipt
Oct 10, 2019
Letter accompanying subsequently filed items
Oct 10, 2019
Notice of appeal
Sep 24, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 23, 2019
Advice of delivery
Sep 20, 2019
Advice of delivery
Sep 16, 2019
Acknowledgement of a document
Sep 16, 2019
Acknowledgement of a document
Sep 16, 2019
Acknowledgement of a document
Sep 16, 2019
Acknowledgement of a document
Sep 16, 2019
Annex to the communication - opposition
Sep 16, 2019
Decision of the Opposition Division and instruction
Sep 16, 2019
Decision revoking the European patent
Sep 16, 2019
Grounds for the decision (Annex) - opposition
Sep 16, 2019
Internal form - Opposition/addressees
Sep 16, 2019
Internal form - Opposition/addressees
Sep 16, 2019
Means of redress
Sep 16, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Sep 16, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Sep 16, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Sep 16, 2019
Provision of a copy of the minutes - opposition procedure
Sep 16, 2019
Scanned annex to a communication - opposition procedure
Jul 30, 2019
Brief communication - Opposition proceedings
Jul 26, 2019
Information about the result of oral proceedings
Jul 25, 2019
Brief communication - Opposition proceedings
Jul 24, 2019
(Electronic) Receipt
Jul 24, 2019
(Electronic) Receipt
Jul 24, 2019
(Electronic) Receipt
Jul 24, 2019
Any annexes (other than citation) to an opposition letter
Jul 24, 2019
Any annexes (other than citation) to an opposition letter
Jul 24, 2019
Any annexes (other than citation) to an opposition letter
Jul 24, 2019
Letter accompanying subsequently filed items
Jul 24, 2019
Letter accompanying subsequently filed items
Jul 24, 2019
Letter accompanying subsequently filed items
Jul 24, 2019
Written submission in preparation to/during oral proceedings
Jul 24, 2019
Written submission in preparation to/during oral proceedings
Jul 24, 2019
Written submission in preparation to/during oral proceedings
May 31, 2019
Brief communication - Opposition proceedings
May 31, 2019
Brief communication - Opposition proceedings
May 31, 2019
Brief communication - Opposition proceedings
May 31, 2019
Brief communication - Opposition proceedings
May 24, 2019
(Electronic) Receipt
May 24, 2019
(Electronic) Receipt
May 24, 2019
(Electronic) Receipt
May 24, 2019
(Electronic) Receipt
May 24, 2019
Amended claims with annotations
May 24, 2019
Amended claims with annotations
May 24, 2019
Amended claims with annotations
May 24, 2019
Citation in opposition procedure
May 24, 2019
Citation in opposition procedure
May 24, 2019
Citation in opposition procedure
May 24, 2019
Citation in opposition procedure
May 24, 2019
Claims
May 24, 2019
Claims
May 24, 2019
Claims
May 24, 2019
Letter regarding the opposition procedure (no time limit)
May 24, 2019
Letter regarding the opposition procedure (no time limit)
May 24, 2019
Letter regarding the opposition procedure (no time limit)
May 24, 2019
Letter regarding the opposition procedure (no time limit)
May 24, 2019
Written submission in preparation to/during oral proceedings
May 24, 2019
Written submission in preparation to/during oral proceedings
May 24, 2019
Written submission in preparation to/during oral proceedings
May 24, 2019
Written submission in preparation to/during oral proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 5, 2019
Brief communication - Opposition proceedings
Apr 2, 2019
Request for interpreters during oral proceedings
Apr 2, 2019
Request for interpreters during oral proceedings
Apr 1, 2019
Request for interpreters during oral proceedings
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Dec 24, 2018
Advice of delivery
Dec 21, 2018
Advice of delivery
Dec 19, 2018
Acknowledgement of a document
Dec 19, 2018
Acknowledgement of a document
Dec 19, 2018
Acknowledgement of a document
Dec 19, 2018
Acknowledgement of a document
Dec 19, 2018
Information concerning oral proceedings
Dec 19, 2018
Notification concerning the date of oral proceedings
Dec 19, 2018
Notification concerning the date of oral proceedings
Dec 19, 2018
Notification concerning the date of oral proceedings
Dec 19, 2018
Notification concerning the date of oral proceedings
Dec 19, 2018
Summons to attend oral proceedings
Dec 19, 2018
Summons to attend oral proceedings
Dec 19, 2018
Summons to attend oral proceedings
Dec 19, 2018
Summons to attend oral proceedings
Dec 12, 2018
Brief communication - Opposition proceedings
Dec 12, 2018
Brief communication - Opposition proceedings
Dec 12, 2018
Brief communication - Opposition proceedings
Dec 12, 2018
Brief communication - Opposition proceedings
Dec 10, 2018
Brief communication - Opposition proceedings
Dec 10, 2018
Brief communication - Opposition proceedings
Dec 10, 2018
Brief communication - Opposition proceedings
Dec 7, 2018
Any annexes (other than citation) to an opposition letter
Dec 7, 2018
Oral proceedings: Request for postponement
Dec 5, 2018
(Electronic) Receipt
Dec 5, 2018
Any annexes (other than citation) to an opposition letter
Dec 5, 2018
Letter regarding the opposition procedure (no time limit)
Dec 5, 2018
Oral proceedings: Request for postponement
Dec 3, 2018
Advice of delivery
Dec 3, 2018
Advice of delivery
Dec 3, 2018
Advice of delivery
Dec 3, 2018
Advice of delivery
Dec 3, 2018
Advice of delivery
Dec 3, 2018
Advice of delivery
Nov 30, 2018
Advice of delivery
Nov 30, 2018
Advice of delivery
Nov 28, 2018
Acknowledgement of a document
Nov 28, 2018
Acknowledgement of a document
Nov 28, 2018
Acknowledgement of a document
Nov 28, 2018
Acknowledgement of a document
Nov 28, 2018
Annex to the communication - opposition
Nov 28, 2018
Information concerning oral proceedings
Nov 28, 2018
Summons to attend oral proceedings
Nov 28, 2018
Summons to attend oral proceedings
Nov 28, 2018
Summons to attend oral proceedings
Nov 28, 2018
Summons to attend oral proceedings
Aug 30, 2018
Brief communication - Opposition proceedings
Aug 30, 2018
Brief communication - Opposition proceedings
Aug 30, 2018
Brief communication - Opposition proceedings
Aug 24, 2018
Reply of the patent proprietor to the notice(s) of opposition
Aug 24, 2018
Reply of the patent proprietor to the notice(s) of opposition
Apr 19, 2018
Communication of a notice of opposition and request to file observations
Apr 19, 2018
Notice of further oppositions to opponent(s)
Apr 19, 2018
Notice of further oppositions to opponent(s)
Apr 19, 2018
Notice of further oppositions to opponent(s)
Nov 27, 2017
Brief communication - Opposition proceedings
Nov 27, 2017
Brief communication - Opposition proceedings
Nov 27, 2017
Brief communication - Opposition proceedings
Nov 27, 2017
Brief communication - Opposition proceedings
Nov 17, 2017
Communication of a notice of opposition - first information to patent proprietor
Nov 17, 2017
Letter regarding the opposition procedure (no time limit)
Nov 17, 2017
Letter regarding the opposition procedure (no time limit)
Nov 17, 2017
Request for grant of a European patent
Nov 8, 2017
(Electronic) Receipt
Nov 8, 2017
(Electronic) Receipt
Nov 8, 2017
(Electronic) Receipt
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Citation in opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Non-patent literature cited during the opposition procedure
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Notice of opposition
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Nov 8, 2017
Patent document cited during the opposition procedure
Jul 31, 2017
Communication confirming withdrawal from representation
Jul 31, 2017
Communication of amended entries concerning the representative
Jul 12, 2017
(Electronic) Receipt
Jul 12, 2017
Letter accompanying subsequently filed items
Jul 12, 2017
Submission concerning change of applicant's representative
Jul 12, 2017
Submission concerning change of applicant's representative
Feb 14, 2017
Rectification of designation of inventor (Legal Division)
Feb 9, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 25, 2017
(Electronic) Receipt
Jan 25, 2017
Letter accompanying subsequently filed items
Jan 25, 2017
Letter concerning the inventor
Jan 12, 2017
Decision to grant a European patent
Dec 2, 2016
Brief communication to applicant/representative (Legal Division)
Nov 25, 2016
Bibliographic data of the European patent application
Nov 25, 2016
Information about intention to grant a patent
Nov 25, 2016
Intention to grant (signatures)
Nov 25, 2016
Text intended for grant (clean copy)
Nov 25, 2016
Text intended for grant (version for approval)
Nov 24, 2016
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Nov 17, 2016
(Electronic) Receipt
Nov 17, 2016
Amended claims with annotations
Nov 17, 2016
Claims
Nov 17, 2016
French translation of claims
Nov 17, 2016
German translation of the claims
Nov 17, 2016
Letter accompanying subsequently filed items
Nov 17, 2016
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Nov 15, 2016
Bibliographic data of the European patent application
Nov 15, 2016
Communication about intention to grant a European patent
Nov 15, 2016
Intention to grant (signatures)
Nov 15, 2016
Text intended for grant (clean copy)
Nov 15, 2016
Text intended for grant (version for approval)
Oct 11, 2016
Reply to communication from the Examining Division
Aug 31, 2016
Grant of extension of time limit (examination procedure)
Aug 19, 2016
Request for extension of time limit to communication from the Examining Division
Jul 8, 2016
Grant of extension of time limit (examination procedure)
Jun 17, 2016
Request for extension of time limit to communication from the Examining Division
Apr 29, 2016
Communication of the registration of a transfer or change of name and/or address
Mar 31, 2016
Annexes in respect of a client data request
Mar 31, 2016
Submission concerning change of applicant's name
Feb 11, 2016
Annex to the communication
Feb 11, 2016
Communication from the Examining Division
Sep 10, 2015
Amended claims filed after receipt of (European) search report
Sep 10, 2015
Amended claims with annotations
Sep 10, 2015
Amendments received before examination
Aug 10, 2015
Communication confirming withdrawal from representation
Aug 10, 2015
Communication of amended entries concerning the representative
Jul 27, 2015
Submission concerning change of applicant's representative
Jul 24, 2015
Submission concerning change of applicant's representative
Jul 20, 2015
Submission concerning change of applicant's representative
Jun 9, 2015
Communication to designated inventor
May 27, 2015
Letter concerning the inventor
Apr 20, 2015
Invitation to indicate correct address of inventor
Apr 8, 2015
Letter which had not been notified
Mar 25, 2015
Notification on forthcoming publication of bibliographic data
Mar 6, 2015
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Mar 4, 2015
Communication to designated inventor
Mar 4, 2015
Communication to designated inventor
Mar 4, 2015
Communication to designated inventor
Mar 4, 2015
Communication to designated inventor
Feb 23, 2015
Refund of fees
Dec 22, 2014
Copy of the international preliminary report on patentability
Dec 19, 2014
(Electronic) Receipt
Dec 19, 2014
Request for entry into the European phase
Oct 17, 2014
Information on entry into European phase
Jan 2, 2014
Priority document (electronically transmitted)
Jan 2, 2014
Priority document (electronically transmitted)
Dec 12, 2013
Copy of the international search report
Dec 12, 2013
Published international application - A1
Oct 30, 2013
Written opinion of the ISA, boxes No. I to VIII
Oct 30, 2013
Written opinion of the ISA, cover sheet
Oct 30, 2013
Written opinion of the ISA, supplemental box
Jun 6, 2013
(Electronic) Receipt
Jun 6, 2013
Abstract
Jun 6, 2013
Claims
Jun 6, 2013
Description
Jun 6, 2013
Drawings

EP2861569

CELANESE SALES GERMANY

Application Number: EP13727188A
Filing Date: Jun 6, 2013
Status: Revoked; Jul 9, 2021
Publication Date: Feb 8, 2017
External Links: Slate, Register , Google Patents

IP Verse

Process For Producing Acesulfame Potassium

Patent Summary

Patent Family

Patent Oppositions (3)

Dossier Documents

EP2861569