A Process Of Preparing An Ester Of A Cellulose Ether

Patent No. EP2831121 (titled "A Process Of Preparing An Ester Of A Cellulose Ether") was filed by DOW on Mar 12, 2013. The application was issued on Oct 10, 2018.

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
SHIN ETSU CHEMICAL	Jul 9, 2019	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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Jun 27, 2022
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jun 27, 2022
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Jun 22, 2022
Termination of the opposition proceedings with maintenance of patent
Mar 11, 2022
Decision to discontinue the opposition proceedings
Mar 10, 2022
Notification concerning the date of oral proceedings
Mar 9, 2022
(Electronic) Receipt
Mar 9, 2022
Letter accompanying subsequently filed items
Mar 9, 2022
Withdrawal of a request for oral proceedings
Mar 7, 2022
Brief communication - Opposition proceedings
Mar 7, 2022
Brief communication - Opposition proceedings
Mar 2, 2022
(Electronic) Receipt
Mar 2, 2022
Letter accompanying subsequently filed items
Mar 2, 2022
Withdrawal of an opposition
Jan 17, 2022
Brief communication - Opposition proceedings
Jan 14, 2022
Brief communication - Opposition proceedings
Jan 12, 2022
(Electronic) Receipt
Jan 12, 2022
Citation in opposition procedure - 016
Jan 12, 2022
Citation in opposition procedure - 017
Jan 12, 2022
Citation in opposition procedure - 018
Jan 12, 2022
Consolidated list of cited opposition documents
Jan 12, 2022
Letter accompanying subsequently filed items
Jan 12, 2022
Written submission in preparation to/during oral proceedings
Jan 11, 2022
(Electronic) Receipt
Jan 11, 2022
(Electronic) Receipt
Jan 11, 2022
Letter accompanying subsequently filed items
Jan 11, 2022
Letter accompanying subsequently filed items
Jan 11, 2022
Request for interpreters during oral proceedings
Jan 5, 2022
(Electronic) Receipt
Jan 4, 2022
Notification concerning the date of oral proceedings
Jan 4, 2022
Notification concerning the date of oral proceedings
Apr 21, 2021
Advice of delivery
Apr 15, 2021
Document concerning representation
Apr 13, 2021
Annex to the communication - opposition
Apr 13, 2021
Summons to attend oral proceedings
Apr 13, 2021
Summons to attend oral proceedings
Apr 13, 2021
Transmittal of decision / summons - opposition
Apr 13, 2021
Transmittal of decision / summons - opposition
Apr 6, 2021
Information about the result of oral proceedings
Dec 21, 2020
Brief communication - Opposition proceedings
Dec 16, 2020
(Electronic) Receipt
Dec 16, 2020
Letter accompanying subsequently filed items
Dec 16, 2020
Written submission in preparation to/during oral proceedings
Nov 9, 2020
Brief communication - Opposition proceedings
Nov 4, 2020
(Electronic) Receipt
Nov 4, 2020
Citation in opposition procedure - 002
Nov 4, 2020
Citation in opposition procedure - 003
Nov 4, 2020
Citation in opposition procedure - 012
Nov 4, 2020
Citation in opposition procedure - 013
Nov 4, 2020
Citation in opposition procedure - 014
Nov 4, 2020
Citation in opposition procedure - 015
Nov 4, 2020
Letter accompanying subsequently filed items
Nov 4, 2020
Written submission in preparation to/during oral proceedings
Aug 31, 2020
Advice of delivery
Aug 28, 2020
Brief communication - Opposition proceedings
Aug 28, 2020
Notification concerning the date of oral proceedings
Aug 28, 2020
Notification concerning the date of oral proceedings
Aug 25, 2020
(Electronic) Receipt
Aug 25, 2020
Letter accompanying subsequently filed items
Aug 25, 2020
Oral proceedings: reply to date proposed
Mar 30, 2020
Advice of delivery
Mar 27, 2020
(Electronic) Receipt
Mar 27, 2020
Advice of delivery
Mar 27, 2020
Advice of delivery
Mar 27, 2020
Letter accompanying subsequently filed items
Mar 27, 2020
Written submission in preparation to/during oral proceedings
Mar 24, 2020
Acknowledgement of a document
Mar 24, 2020
Acknowledgement of a document
Mar 24, 2020
Information concerning oral proceedings
Mar 24, 2020
Summons to attend oral proceedings
Mar 24, 2020
Summons to attend oral proceedings
Mar 20, 2020
Notification concerning the date of oral proceedings
Mar 20, 2020
Notification concerning the date of oral proceedings
Mar 11, 2020
Brief communication - Opposition proceedings
Mar 11, 2020
Brief communication - Opposition proceedings
Mar 6, 2020
(Electronic) Receipt
Mar 6, 2020
(Electronic) Receipt
Mar 6, 2020
Letter accompanying subsequently filed items
Mar 6, 2020
Oral proceedings: Request for postponement
Mar 5, 2020
Oral proceedings: Request for postponement
Mar 5, 2020
Summons to attend oral proceedings
Mar 4, 2020
Advice of delivery
Mar 3, 2020
Advice of delivery
Feb 28, 2020
Acknowledgement of a document
Feb 28, 2020
Acknowledgement of a document
Feb 28, 2020
Annex to the communication - opposition
Feb 28, 2020
Information concerning oral proceedings
Feb 28, 2020
Summons to attend oral proceedings
Feb 28, 2020
Summons to attend oral proceedings
Nov 11, 2019
Brief communication - Opposition proceedings
Nov 6, 2019
(Electronic) Receipt
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure
Nov 6, 2019
Auxiliary request during Opposition procedure - 01
Nov 6, 2019
Auxiliary request during Opposition procedure - 02
Nov 6, 2019
Auxiliary request during Opposition procedure - 03
Nov 6, 2019
Auxiliary request during Opposition procedure - 04
Nov 6, 2019
Auxiliary request during Opposition procedure - 05
Nov 6, 2019
Auxiliary request during Opposition procedure - 06
Nov 6, 2019
Auxiliary request during Opposition procedure - 07
Nov 6, 2019
Auxiliary request during Opposition procedure - 08
Nov 6, 2019
Auxiliary request during Opposition procedure - 09
Nov 6, 2019
Auxiliary request during Opposition procedure - 10
Nov 6, 2019
Auxiliary request during Opposition procedure - 11
Nov 6, 2019
Auxiliary request during Opposition procedure - 12
Nov 6, 2019
Auxiliary request during Opposition procedure - 13
Nov 6, 2019
Letter accompanying subsequently filed items
Nov 6, 2019
Reply of the patent proprietor to the notice(s) of opposition
Jul 22, 2019
Communication of a notice of opposition and request to file observations
Jul 22, 2019
Notice of further oppositions to opponent(s)
Jul 15, 2019
Communication of a notice of opposition - first information to patent proprietor
Jul 9, 2019
(Electronic) Receipt
Jul 9, 2019
Citation in opposition procedure - 001
Jul 9, 2019
Citation in opposition procedure - 001
Jul 9, 2019
Citation in opposition procedure - 002
Jul 9, 2019
Citation in opposition procedure - 002
Jul 9, 2019
Citation in opposition procedure - 003
Jul 9, 2019
Citation in opposition procedure - 003
Jul 9, 2019
Citation in opposition procedure - 004
Jul 9, 2019
Citation in opposition procedure - 004
Jul 9, 2019
Citation in opposition procedure - 005
Jul 9, 2019
Citation in opposition procedure - 005
Jul 9, 2019
Citation in opposition procedure - 006
Jul 9, 2019
Citation in opposition procedure - 007
Jul 9, 2019
Citation in opposition procedure - 008
Jul 9, 2019
Citation in opposition procedure - 009
Jul 9, 2019
Citation in opposition procedure - 009
Jul 9, 2019
Citation in opposition procedure - 010
Jul 9, 2019
Citation in opposition procedure - 011
Jul 9, 2019
Notice of opposition
Jul 9, 2019
Notice of opposition
Oct 22, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 13, 2018
Decision to grant a European patent
Aug 28, 2018
(Electronic) Receipt
Aug 28, 2018
Filing of the translations of the claims
Aug 28, 2018
French translation of claims
Aug 28, 2018
German translation of the claims
Aug 28, 2018
Letter accompanying subsequently filed items
Apr 18, 2018
Bibliographic data of the European patent application
Apr 18, 2018
Communication about intention to grant a European patent
Apr 18, 2018
Intention to grant (signatures)
Apr 18, 2018
Text intended for grant (clean copy)
Apr 18, 2018
Text intended for grant (version for approval)
Mar 20, 2018
Examination started
Dec 14, 2017
Notification regarding date of start of examination with possibility to withdraw
Apr 15, 2015
Reply to Written Opinion prepared by the EPO
Jan 13, 2015
Communication to designated inventor
Jan 8, 2015
Notification on forthcoming publication of bibliographic data
Dec 31, 2014
Letter concerning the inventor
Dec 22, 2014
Letter concerning the inventor
Dec 19, 2014
Invitation to indicate correct address of inventor
Dec 11, 2014
Letter which had not been notified
Dec 1, 2014
Invitation to indicate correct address of inventor
Nov 24, 2014
Letter which had not been notified
Nov 4, 2014
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Oct 31, 2014
Communication to designated inventor
Oct 31, 2014
Communication to designated inventor
Oct 31, 2014
Communication to designated inventor
Oct 14, 2014
Copy of the international preliminary report on patentability
Sep 22, 2014
Payment of fees and costs
Sep 22, 2014
Request for entry into the European phase
Aug 8, 2014
Information on entry into European phase
Oct 22, 2013
Priority document (electronically transmitted)
Oct 3, 2013
Copy of the international search report
Oct 3, 2013
Published international application - A1
Sep 3, 2013
Written opinion of the ISA, boxes No. I to VIII
Sep 3, 2013
Written opinion of the ISA, cover sheet
Sep 3, 2013
Written opinion of the ISA, supplemental box
May 27, 2013
Abstract
May 27, 2013
Claims
May 27, 2013
Description
May 27, 2013
Drawings

EP2831121

DOW

Application Number: EP13724915A
Filing Date: Mar 12, 2013
Status: Granted And Under Opposition; Sep 7, 2018
Publication Date: Oct 10, 2018
External Links: Slate, Register , Google Patents

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A Process Of Preparing An Ester Of A Cellulose Ether

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Dossier Documents

EP2831121