Water-Soluble Esterified Cellulose Ethers Having A Low Degree Of Neutralization

Patent No. EP3270971 (titled "Water-Soluble Esterified Cellulose Ethers Having A Low Degree Of Neutralization") was filed by DOW on Mar 8, 2016. The application was issued on Jan 9, 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	Oct 9, 2019	TER MEER STEINMEISTER & PARTNER

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 15, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Jun 15, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jun 10, 2021
Termination of the opposition proceedings with maintenance of patent
Mar 15, 2021
Advice of delivery
Mar 8, 2021
Advice of delivery
Mar 1, 2021
Annex to the communication - opposition
Mar 1, 2021
Decision of the Opposition Division and instruction
Mar 1, 2021
Decision rejecting the opposition
Mar 1, 2021
Grounds for the decision (Annex) - opposition
Mar 1, 2021
Internal form - Opposition/addressees
Mar 1, 2021
Internal form - Opposition/addressees
Mar 1, 2021
Means of redress
Mar 1, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 1, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 1, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Mar 1, 2021
Provision of a copy of the minutes - opposition procedure
Mar 1, 2021
Transmittal of decision / summons - opposition
Mar 1, 2021
Transmittal of decision / summons - opposition
Jan 26, 2021
Information about the result of oral proceedings
Dec 23, 2020
Brief communication - Opposition proceedings
Dec 18, 2020
(Electronic) Receipt
Dec 18, 2020
Letter accompanying subsequently filed items
Dec 18, 2020
Written submission in preparation to/during oral proceedings
Dec 2, 2020
Brief communication - Opposition proceedings
Nov 30, 2020
Notification concerning the date of oral proceedings
Nov 30, 2020
Notification concerning the date of oral proceedings
Nov 26, 2020
(Electronic) Receipt
Nov 26, 2020
Letter accompanying subsequently filed items
Nov 26, 2020
Request for interpreters during oral proceedings
Nov 24, 2020
Brief communication - Opposition proceedings
Nov 24, 2020
Brief communication - Opposition proceedings
Nov 19, 2020
(Electronic) Receipt
Nov 19, 2020
Letter accompanying subsequently filed items
Nov 19, 2020
Oral proceedings: reply to date proposed
Nov 18, 2020
(Electronic) Receipt
Nov 18, 2020
Citation in opposition procedure - 011
Nov 18, 2020
Consolidated list of cited opposition documents
Nov 18, 2020
Letter accompanying subsequently filed items
Nov 18, 2020
Written submission in preparation to/during oral proceedings
Jun 23, 2020
Advice of delivery
Jun 18, 2020
Advice of delivery
Jun 15, 2020
Acknowledgement of a document
Jun 15, 2020
Acknowledgement of a document
Jun 15, 2020
Annex to the communication - opposition
Jun 15, 2020
Information concerning oral proceedings
Jun 15, 2020
Summons to attend oral proceedings
Jun 15, 2020
Summons to attend oral proceedings
Mar 5, 2020
Brief communication - Opposition proceedings
Feb 28, 2020
(Electronic) Receipt
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure
Feb 28, 2020
Auxiliary request during Opposition procedure - 01
Feb 28, 2020
Auxiliary request during Opposition procedure - 02
Feb 28, 2020
Auxiliary request during Opposition procedure - 03
Feb 28, 2020
Auxiliary request during Opposition procedure - 04
Feb 28, 2020
Auxiliary request during Opposition procedure - 05
Feb 28, 2020
Auxiliary request during Opposition procedure - 06
Feb 28, 2020
Auxiliary request during Opposition procedure - 07
Feb 28, 2020
Auxiliary request during Opposition procedure - 08
Feb 28, 2020
Auxiliary request during Opposition procedure - 09
Feb 28, 2020
Citation in opposition procedure - 010
Feb 28, 2020
Letter accompanying subsequently filed items
Feb 28, 2020
Reply of the patent proprietor to the notice(s) of opposition
Dec 12, 2019
Brief communication - Opposition proceedings
Dec 12, 2019
Communication of amended entries
Dec 12, 2019
Communication of amended entries
Dec 6, 2019
(Electronic) Receipt
Dec 6, 2019
Letter accompanying subsequently filed items
Dec 6, 2019
Request for change of opponent's representative
Dec 4, 2019
(Electronic) Receipt
Dec 4, 2019
Letter accompanying subsequently filed items
Dec 4, 2019
Request for change of opponent's representative
Oct 21, 2019
Communication of a notice of opposition and request to file observations
Oct 21, 2019
Notice of further oppositions to opponent(s)
Oct 15, 2019
Communication of a notice of opposition - first information to patent proprietor
Oct 9, 2019
(Electronic) Receipt
Oct 9, 2019
Citation in opposition procedure - 001
Oct 9, 2019
Citation in opposition procedure - 002
Oct 9, 2019
Citation in opposition procedure - 002
Oct 9, 2019
Citation in opposition procedure - 003
Oct 9, 2019
Citation in opposition procedure - 003
Oct 9, 2019
Citation in opposition procedure - 004
Oct 9, 2019
Citation in opposition procedure - 005
Oct 9, 2019
Citation in opposition procedure - 006
Oct 9, 2019
Citation in opposition procedure - 007
Oct 9, 2019
Citation in opposition procedure - 008
Oct 9, 2019
Citation in opposition procedure - 008
Oct 9, 2019
Citation in opposition procedure - 009
Oct 9, 2019
International publication (Pamphlet)
Oct 9, 2019
Notice of opposition
Oct 9, 2019
Notice of opposition
Jan 21, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 13, 2018
Decision to grant a European patent
Nov 28, 2018
(Electronic) Receipt
Nov 28, 2018
Filing of the translations of the claims
Nov 28, 2018
French translation of claims
Nov 28, 2018
German translation of the claims
Nov 28, 2018
Letter accompanying subsequently filed items
Jul 26, 2018
Bibliographic data of the European patent application
Jul 26, 2018
Communication about intention to grant a European patent
Jul 26, 2018
Intention to grant (signatures)
Jul 26, 2018
Text intended for grant (clean copy)
Jul 26, 2018
Text intended for grant (version for approval)
Jun 15, 2018
Examination started
Jan 4, 2018
Notification on forthcoming publication of bibliographic data
Dec 4, 2017
(Electronic) Receipt
Dec 4, 2017
Letter accompanying subsequently filed items
Dec 4, 2017
Matter concerning the application
Oct 24, 2017
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Oct 20, 2017
Communication to designated inventor
Oct 20, 2017
Communication to designated inventor
Oct 20, 2017
Communication to designated inventor
Sep 25, 2017
Copy of the international preliminary examination report
Aug 21, 2017
(Electronic) Receipt
Aug 21, 2017
Amended claims filed after receipt of (European) search report
Aug 21, 2017
Amended claims with annotations
Aug 21, 2017
Amendments received before examination
Aug 21, 2017
Request for entry into the European phase
Jul 26, 2017
Information on entry into European phase
Mar 10, 2017
International preliminary examination report
Mar 10, 2017
International preliminary examination report - free text sheet
Mar 10, 2017
International preliminary examination report - points I-VIII
Mar 10, 2017
Transmittal of International Preliminary Examination Report
Oct 11, 2016
Priority document (electronically transmitted)
Oct 7, 2016
Notification of the recording of a change
Oct 7, 2016
Notification of the recording of a change
Oct 7, 2016
Notification of the recording of a change
Sep 22, 2016
Copy of the international search report
Sep 22, 2016
Published international application - A1
Aug 10, 2016
Notification of receipt of demand
Aug 6, 2016
Document concerning fees and payments
Aug 6, 2016
PCT demand form
Aug 6, 2016
Reply to International Search Opinion
Aug 6, 2016
Submission concerning representation
Aug 4, 2016
Document concerning fees and payments
Aug 4, 2016
PCT demand form
Aug 4, 2016
Payment of fees and costs
Aug 4, 2016
Reply to International Search Opinion
Aug 4, 2016
Submission concerning representation
Jun 8, 2016
ISR: cited documents
Jun 7, 2016
Written opinion of the ISA, boxes No. I to VIII
Jun 7, 2016
Written opinion of the ISA, cover sheet
Jun 7, 2016
Written opinion of the ISA, supplemental box
Apr 11, 2016
Notification of receipt of Search copy
Mar 17, 2016
Abstract
Mar 17, 2016
Annex
Mar 17, 2016
Claims
Mar 17, 2016
Description
Mar 17, 2016
Drawings
Mar 17, 2016
Fee calculation sheet for an international application
Mar 17, 2016
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Mar 17, 2016
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Mar 17, 2016
Request form for international application (copy for ISA/EP)

EP3270971

DOW

Application Number: EP16711737A
Filing Date: Mar 8, 2016
Status: Opposition Rejected; Jun 11, 2021
Publication Date: Jan 9, 2019
External Links: Slate, Register , Google Patents

IP Verse

Water-Soluble Esterified Cellulose Ethers Having A Low Degree Of Neutralization

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Dossier Documents

EP3270971