Methods For Preparing Alkali Cellulose And Cellulose Ether

Patent No. EP1734055 (titled "Methods For Preparing Alkali Cellulose And Cellulose Ether") was filed by Shin Etsu Chemical on Jun 6, 2006. The application was issued on Apr 26, 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
THE DOW CHEMICAL	Jan 23, 2018	N&H EMEA

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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Sep 16, 2022
Refund of fees
Sep 14, 2022
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Sep 14, 2022
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Sep 9, 2022
Termination of the opposition proceedings with revocation of patent
Aug 9, 2022
F3014 Oral Proceedings: Order cancelling/postponing
Aug 9, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Aug 9, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Aug 8, 2022
(Electronic) Receipt
Aug 8, 2022
Letter accompanying subsequently filed items
Aug 8, 2022
Withdrawal of an appeal
Jul 8, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jul 8, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 6, 2021
(Electronic) Receipt
Dec 6, 2021
Advice of delivery
Dec 6, 2021
F3011.1 Oral Proceedings: summons
Dec 6, 2021
F3011.1 Oral Proceedings: summons
Dec 6, 2021
Letter accompanying subsequently filed items
Dec 1, 2021
F3010 Oral proceedings: order for summons
Apr 8, 2021
F3303.16 Change of composition of the Board (T)
Jul 9, 2020
F3345 Forwarding of submissions to parties
Jul 3, 2020
(Electronic) Receipt
Jul 3, 2020
Letter accompanying subsequently filed items
Jul 3, 2020
Reply to appeal
Apr 15, 2020
Composition of the board (T)
Mar 23, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Mar 16, 2020
(Electronic) Receipt
Mar 16, 2020
Amended claims with annotations
Mar 16, 2020
Amended claims with annotations
Mar 16, 2020
Amended claims with annotations
Mar 16, 2020
Amended claims with annotations
Mar 16, 2020
Auxiliary request during appeals procedure - 01
Mar 16, 2020
Auxiliary request during appeals procedure - 02
Mar 16, 2020
Auxiliary request during appeals procedure - 03
Mar 16, 2020
Auxiliary request during appeals procedure - 04
Mar 16, 2020
Cited document during appeal procedure
Mar 16, 2020
Cited document during appeal procedure
Mar 16, 2020
Cited document during appeal procedure
Mar 16, 2020
Cited document during appeal procedure
Mar 16, 2020
Cited document during appeal procedure
Mar 16, 2020
Claims
Mar 16, 2020
Letter accompanying subsequently filed items
Mar 16, 2020
Statement of grounds of appeal
Jan 10, 2020
F3204 Communication of the file number to the parties
Jan 10, 2020
F3204 Communication of the file number to the parties
Jan 3, 2020
(Electronic) Receipt
Jan 3, 2020
Letter accompanying subsequently filed items
Jan 3, 2020
Notice of appeal
Nov 13, 2019
Advice of delivery
Nov 12, 2019
(Electronic) Receipt
Nov 12, 2019
Advice of delivery
Nov 12, 2019
Letter accompanying subsequently filed items
Nov 6, 2019
Acknowledgement of a document
Nov 6, 2019
Acknowledgement of a document
Nov 6, 2019
Annex to the communication - opposition
Nov 6, 2019
Decision of the Opposition Division and instruction
Nov 6, 2019
Decision revoking the European patent
Nov 6, 2019
Grounds for the decision (Annex) - opposition
Nov 6, 2019
Internal form - Opposition/addressees
Nov 6, 2019
Internal form - Opposition/addressees
Nov 6, 2019
Means of redress
Nov 6, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 6, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 6, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Nov 6, 2019
Provision of a copy of the minutes - opposition procedure
Sep 26, 2019
Information about the result of oral proceedings
Sep 24, 2019
(Electronic) Receipt
Sep 24, 2019
(Electronic) Receipt
Sep 24, 2019
Letter accompanying subsequently filed items
Sep 24, 2019
Letter accompanying subsequently filed items
Sep 24, 2019
Non-patent literature cited during the opposition procedure
Sep 24, 2019
Non-patent literature cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Patent document cited during the opposition procedure
Sep 24, 2019
Written submission in preparation to/during oral proceedings
Sep 24, 2019
Written submission in preparation to/during oral proceedings
Sep 13, 2019
Brief communication - Opposition proceedings
Sep 12, 2019
Brief communication - Opposition proceedings
Sep 10, 2019
(Electronic) Receipt
Sep 10, 2019
Any annexes (other than citation) to an opposition letter
Sep 10, 2019
Consolidated list of cited opposition documents
Sep 10, 2019
Letter accompanying subsequently filed items
Sep 10, 2019
Written submission in preparation to/during oral proceedings
Aug 26, 2019
Brief communication - Opposition proceedings
Aug 21, 2019
(Electronic) Receipt
Aug 21, 2019
Letter accompanying subsequently filed items
Aug 21, 2019
Non-patent literature cited during the opposition procedure
Aug 21, 2019
Patent document cited during the opposition procedure
Aug 21, 2019
Written submission in preparation to/during oral proceedings
Aug 6, 2019
Brief communication - Opposition proceedings
Aug 6, 2019
Communication of amended entries
Aug 6, 2019
Communication of amended entries
Aug 1, 2019
(Electronic) Receipt
Aug 1, 2019
Authorisation
Aug 1, 2019
Letter accompanying subsequently filed items
Aug 1, 2019
Request for change of opponent's representative
Jul 30, 2019
Brief communication - Opposition proceedings
Jul 25, 2019
(Electronic) Receipt
Jul 25, 2019
Amended claims with annotations
Jul 25, 2019
Amended claims with annotations
Jul 25, 2019
Amended claims with annotations
Jul 25, 2019
Brief communication - Opposition proceedings
Jul 25, 2019
Claims
Jul 25, 2019
Claims
Jul 25, 2019
Claims
Jul 25, 2019
Claims
Jul 25, 2019
Letter accompanying subsequently filed items
Jul 25, 2019
Written submission in preparation to/during oral proceedings
Jul 22, 2019
(Electronic) Receipt
Jul 22, 2019
Letter accompanying subsequently filed items
Jul 22, 2019
Request for interpreters during oral proceedings
Jan 3, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Jan 2, 2019
Advice of delivery
Dec 21, 2018
Acknowledgement of a document
Dec 21, 2018
Acknowledgement of a document
Dec 21, 2018
Annex to the communication - opposition
Dec 21, 2018
Information concerning oral proceedings
Dec 21, 2018
Summons to attend oral proceedings
Dec 21, 2018
Summons to attend oral proceedings
Nov 2, 2018
Brief communication - Opposition proceedings
Oct 29, 2018
(Electronic) Receipt
Oct 29, 2018
Citation in opposition procedure
Oct 29, 2018
Citation in opposition procedure
Oct 29, 2018
Citation in opposition procedure
Oct 29, 2018
Letter accompanying subsequently filed items
Oct 29, 2018
Patent document cited during the opposition procedure
Oct 29, 2018
Reply from the opponent to submission of proprietor
Jun 26, 2018
Brief communication - Opposition proceedings
Jun 20, 2018
(Electronic) Receipt
Jun 20, 2018
Letter accompanying subsequently filed items
Jun 20, 2018
Reply of the patent proprietor to the notice(s) of opposition
Feb 12, 2018
Communication of a notice of opposition and request to file observations
Feb 12, 2018
Notice of further oppositions to opponent(s)
Jan 31, 2018
Communication of a notice of opposition - first information to patent proprietor
Jan 23, 2018
(Electronic) Receipt
Jan 23, 2018
Letter accompanying subsequently filed items
Jan 23, 2018
Non-patent literature cited during the opposition procedure
Jan 23, 2018
Non-patent literature cited during the opposition procedure
Jan 23, 2018
Non-patent literature cited during the opposition procedure
Jan 23, 2018
Notice of opposition
Jan 23, 2018
Notice of opposition
Jan 23, 2018
Patent document cited during the opposition procedure
Jan 23, 2018
Patent document cited during the opposition procedure
Jan 23, 2018
Patent document cited during the opposition procedure
Apr 26, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 30, 2017
Decision to grant a European patent
Mar 16, 2017
(Electronic) Receipt
Mar 16, 2017
Filing of the translations of the claims
Mar 16, 2017
French translation of claims
Mar 16, 2017
German translation of the claims
Mar 16, 2017
Letter accompanying subsequently filed items
Nov 17, 2016
Bibliographic data of the European patent application
Nov 17, 2016
Communication about intention to grant a European patent
Nov 17, 2016
Intention to grant (signatures)
Nov 17, 2016
Text intended for grant (clean copy)
Nov 17, 2016
Text intended for grant (version for approval)
Oct 10, 2016
(Electronic) Receipt
Oct 10, 2016
Amended claims with annotations
Oct 10, 2016
Amended description with annotations
Oct 10, 2016
Claims
Oct 10, 2016
Description
Oct 10, 2016
Letter accompanying subsequently filed items
Oct 10, 2016
Reply to communication from the Examining Division
Aug 17, 2016
Grant of extension of time limit (examination procedure)
Aug 10, 2016
(Electronic) Receipt
Aug 10, 2016
Request for extension of time limit to communication from the Examining Division
Apr 11, 2016
Annex to the communication
Apr 11, 2016
Communication from the Examining Division
Sep 1, 2015
(Electronic) Receipt
Sep 1, 2015
Amended claims with annotations
Sep 1, 2015
Claims
Sep 1, 2015
Letter accompanying subsequently filed items
Sep 1, 2015
Reply to communication from the Examining Division
Jul 1, 2015
Grant of extension of time limit (examination procedure)
Jun 19, 2015
(Electronic) Receipt
Jun 19, 2015
Letter accompanying subsequently filed items
Jun 19, 2015
Request for extension of time limit to communication from the Examining Division
Feb 19, 2015
Annex to the communication
Feb 19, 2015
Communication from the Examining Division
Dec 16, 2014
Submission concerning representation
Feb 22, 2013
(Electronic) Receipt
Feb 22, 2013
Annex
Feb 22, 2013
Annex
Feb 22, 2013
Claims
Feb 22, 2013
Letter accompanying subsequently filed items
Feb 22, 2013
Reply to communication from the Examining Division
Jan 7, 2013
Grant of extension of time limit (examination procedure)
Dec 21, 2012
(Electronic) Receipt
Dec 21, 2012
Letter accompanying subsequently filed items
Dec 21, 2012
Request for extension of time limit to communication from the Examining Division
Aug 22, 2012
Annex to a communication
Aug 22, 2012
Annex to the communication
Aug 22, 2012
Communication from the Examining Division
Jul 30, 2012
(Electronic) Receipt
Jul 30, 2012
Amended claims with annotations
Jul 30, 2012
Claims
Jul 30, 2012
Letter accompanying subsequently filed items
Jul 30, 2012
Non-patent literature cited during the examination procedure
Jul 30, 2012
Reply to communication from the Examining Division
May 25, 2012
Grant of extension of time limit (examination procedure)
May 21, 2012
(Electronic) Receipt
May 21, 2012
Letter accompanying subsequently filed items
May 21, 2012
Request for extension of time limit to communication from the Examining Division
Jan 20, 2012
Annex to the communication
Jan 20, 2012
Communication from the Examining Division
Apr 13, 2011
Submission concerning representation
Aug 18, 2009
(Electronic) Receipt
Aug 18, 2009
Claims
Aug 18, 2009
Letter accompanying subsequently filed items
Aug 18, 2009
Reply to communication from the Examining Division
Jul 21, 2009
Final instructions (loss of partial rights)
Jun 18, 2009
Grant of extension of time limit (examination procedure)
Jun 12, 2009
(Electronic) Receipt
Jun 12, 2009
Letter accompanying subsequently filed items
Jun 12, 2009
Request for extension of time limit to communication from the Examining Division
Apr 9, 2009
Designation deemed to be withdrawn (non payment of designation fees)
Feb 13, 2009
Communication from the Examining Division
Jan 9, 2009
Payment of fees and costs
Sep 8, 2008
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Jul 31, 2008
Communication regarding the transmission of the European search report
Jul 31, 2008
European search opinion
Jul 31, 2008
European search report
Apr 17, 2007
Submission concerning representation
Nov 22, 2006
Notification of forthcoming publication
Jul 31, 2006
Confirmation of receipt of (electronically) transmitted priority document
Jun 29, 2006
Priority document (electronically transmitted)
Jun 6, 2006
Abstract
Jun 6, 2006
Claims
Jun 6, 2006
Description
Jun 6, 2006
Designation of inventor
Jun 6, 2006
Request for grant of a European patent

EP1734055

SHIN ETSU CHEMICAL

Application Number: EP06252932A
Filing Date: Jun 6, 2006
Status: Revoked; Sep 16, 2022
Publication Date: Apr 26, 2017
External Links: Slate, Register , Google Patents

IP Verse

Methods For Preparing Alkali Cellulose And Cellulose Ether

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Dossier Documents

EP1734055