Novel Esterified Cellulose Ethers Of Very High Molecular Weight

Patent No. EP2964203 (titled "Novel Esterified Cellulose Ethers Of Very High Molecular Weight") was filed by DOW on Feb 28, 2014. The application was issued on Apr 3, 2019.

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	Jan 3, 2020	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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Oct 14, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Oct 14, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Oct 11, 2021
Termination of the opposition proceedings with maintenance of patent
Aug 6, 2021
Advice of delivery
Aug 3, 2021
Communication about missing advice of delivery
Jul 7, 2021
Advice of delivery
Jun 29, 2021
Annex to the communication - opposition
Jun 29, 2021
Decision of the Opposition Division and instruction
Jun 29, 2021
Decision rejecting the opposition
Jun 29, 2021
Grounds for the decision (Annex) - opposition
Jun 29, 2021
Internal form - Opposition/addressees
Jun 29, 2021
Internal form - Opposition/addressees
Jun 29, 2021
Means of redress
Jun 29, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 29, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 29, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 29, 2021
Provision of a copy of the minutes - opposition procedure
Jun 29, 2021
Transmittal of decision / summons - opposition
Jun 29, 2021
Transmittal of decision / summons - opposition
Jun 9, 2021
Information about the result of oral proceedings
May 10, 2021
Brief communication - Opposition proceedings
May 4, 2021
(Electronic) Receipt
May 4, 2021
Letter accompanying subsequently filed items
May 4, 2021
Written submission in preparation to/during oral proceedings
Apr 15, 2021
Document concerning representation
Apr 12, 2021
Brief communication - Opposition proceedings
Apr 7, 2021
(Electronic) Receipt
Apr 7, 2021
Written submission in preparation to/during oral proceedings
Mar 26, 2021
Brief communication - Opposition proceedings
Mar 25, 2021
(Electronic) Receipt
Mar 23, 2021
(Electronic) Receipt
Mar 23, 2021
Advice of delivery
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure
Mar 23, 2021
Auxiliary request during Opposition procedure - 01
Mar 23, 2021
Auxiliary request during Opposition procedure - 02
Mar 23, 2021
Auxiliary request during Opposition procedure - 03
Mar 23, 2021
Auxiliary request during Opposition procedure - 04
Mar 23, 2021
Auxiliary request during Opposition procedure - 05
Mar 23, 2021
Letter accompanying subsequently filed items
Mar 23, 2021
Written submission in preparation to/during oral proceedings
Jan 27, 2021
Notification concerning the date of oral proceedings
Jan 27, 2021
Notification concerning the date of oral proceedings
Oct 22, 2020
Advice of delivery
Oct 21, 2020
Advice of delivery
Oct 14, 2020
Acknowledgement of a document
Oct 14, 2020
Acknowledgement of a document
Oct 14, 2020
Annex to the communication - opposition
Oct 14, 2020
Information concerning oral proceedings
Oct 14, 2020
Summons to attend oral proceedings
Oct 14, 2020
Summons to attend oral proceedings
Jun 3, 2020
Brief communication - Opposition proceedings
May 28, 2020
(Electronic) Receipt
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure
May 28, 2020
Auxiliary request during Opposition procedure - 01
May 28, 2020
Auxiliary request during Opposition procedure - 02
May 28, 2020
Auxiliary request during Opposition procedure - 03
May 28, 2020
Auxiliary request during Opposition procedure - 04
May 28, 2020
Auxiliary request during Opposition procedure - 05
May 28, 2020
Auxiliary request during Opposition procedure - 06
May 28, 2020
Letter accompanying subsequently filed items
May 28, 2020
Reply of the patent proprietor to the notice(s) of opposition
Jan 21, 2020
Communication of a notice of opposition and request to file observations
Jan 21, 2020
Notice of further oppositions to opponent(s)
Jan 10, 2020
Communication of a notice of opposition - first information to patent proprietor
Jan 3, 2020
(Electronic) Receipt
Jan 3, 2020
Citation in opposition procedure - 001
Jan 3, 2020
Citation in opposition procedure - 002
Jan 3, 2020
Citation in opposition procedure - 003
Jan 3, 2020
Consolidated list of cited opposition documents
Jan 3, 2020
International publication (Pamphlet)
Jan 3, 2020
Notice of opposition
Jan 3, 2020
Notice of opposition
Apr 15, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 7, 2019
Decision to grant a European patent
Feb 20, 2019
Bibliographic data of the European patent application
Feb 20, 2019
Information about intention to grant a patent
Feb 20, 2019
Intention to grant (signatures)
Feb 20, 2019
Text intended for grant (clean copy)
Feb 20, 2019
Text intended for grant (version for approval)
Jan 23, 2019
(Electronic) Receipt
Jan 23, 2019
Amended claims with annotations
Jan 23, 2019
Claims
Jan 23, 2019
French translation of claims
Jan 23, 2019
German translation of the claims
Jan 23, 2019
Letter accompanying subsequently filed items
Jan 23, 2019
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Sep 14, 2018
Bibliographic data of the European patent application
Sep 14, 2018
Communication about intention to grant a European patent
Sep 14, 2018
Intention to grant (signatures)
Sep 14, 2018
Text intended for grant (clean copy)
Sep 14, 2018
Text intended for grant (version for approval)
Aug 16, 2018
(Electronic) Receipt
Aug 16, 2018
Amended description with annotations
Aug 16, 2018
Description
Aug 16, 2018
Letter accompanying subsequently filed items
Aug 16, 2018
Reply to communication from the Examining Division
Apr 30, 2018
Annex to the communication
Apr 30, 2018
Communication from the Examining Division
Apr 16, 2018
Examination started
Jan 16, 2018
Notification regarding date of start of examination with possibility to withdraw
Mar 3, 2016
Amended claims filed after receipt of (European) search report
Mar 3, 2016
Amended claims with annotations
Mar 3, 2016
Amendments received before examination
Jan 19, 2016
Communication to designated inventor
Dec 21, 2015
Letter concerning the inventor
Dec 16, 2015
Notification on forthcoming publication of bibliographic data
Dec 10, 2015
Invitation to indicate correct address of inventor
Dec 8, 2015
Communication to designated inventor
Dec 3, 2015
Letter which had not been notified
Nov 30, 2015
Letter concerning the inventor
Nov 23, 2015
Invitation to indicate correct address of inventor
Nov 16, 2015
Letter which had not been notified
Oct 14, 2015
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Oct 12, 2015
Communication to designated inventor
Oct 12, 2015
Communication to designated inventor
Oct 12, 2015
Communication to designated inventor
Sep 22, 2015
Copy of the international preliminary report on patentability
Sep 9, 2015
Payment of fees and costs
Sep 9, 2015
Request for entry into the European phase
Jul 17, 2015
Information on entry into European phase
Oct 1, 2014
Priority document (electronically transmitted)
Sep 12, 2014
Copy of the international search report
Sep 12, 2014
Published international application - A1
Jun 16, 2014
Written opinion of the ISA, boxes No. I to VIII
Jun 16, 2014
Written opinion of the ISA, cover sheet
Jun 16, 2014
Written opinion of the ISA, supplemental box
Mar 17, 2014
Abstract
Mar 17, 2014
Annex
Mar 17, 2014
Claims
Mar 17, 2014
Description

EP2964203

DOW

Application Number: EP14711076A
Filing Date: Feb 28, 2014
Status: Opposition Rejected; Oct 15, 2021
Publication Date: Apr 3, 2019
External Links: Slate, Register , Google Patents

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Novel Esterified Cellulose Ethers Of Very High Molecular Weight

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Dossier Documents

EP2964203