Water-Soluble Esterified Cellulose Ethers

Patent No. EP3271404 (titled "Water-Soluble Esterified Cellulose Ethers") 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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Aug 6, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Aug 6, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Aug 3, 2021
Termination of the opposition proceedings with maintenance of patent
Apr 30, 2021
Advice of delivery
Apr 29, 2021
Advice of delivery
Apr 22, 2021
Annex to the communication - opposition
Apr 22, 2021
Decision of the Opposition Division and instruction
Apr 22, 2021
Decision rejecting the opposition
Apr 22, 2021
Grounds for the decision (Annex) - opposition
Apr 22, 2021
Internal form - Opposition/addressees
Apr 22, 2021
Internal form - Opposition/addressees
Apr 22, 2021
Means of redress
Apr 22, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 22, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 22, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 22, 2021
Provision of a copy of the minutes - opposition procedure
Apr 22, 2021
Transmittal of decision / summons - opposition
Apr 22, 2021
Transmittal of decision / summons - opposition
Mar 16, 2021
Information about the result of oral proceedings
Feb 9, 2021
Brief communication - Opposition proceedings
Feb 4, 2021
(Electronic) Receipt
Feb 4, 2021
Citation in opposition procedure
Feb 4, 2021
Letter accompanying subsequently filed items
Feb 4, 2021
Written submission in preparation to/during oral proceedings
Jan 18, 2021
Brief communication - Opposition proceedings
Jan 13, 2021
(Electronic) Receipt
Jan 13, 2021
(Electronic) Receipt
Jan 13, 2021
Citation in opposition procedure - 009
Jan 13, 2021
Consolidated list of cited opposition documents
Jan 13, 2021
Letter accompanying subsequently filed items
Jan 13, 2021
Letter accompanying subsequently filed items
Jan 13, 2021
Request for interpreters during oral proceedings
Jan 13, 2021
Written submission in preparation to/during oral proceedings
Dec 21, 2020
Brief communication - Opposition proceedings
Dec 15, 2020
(Electronic) Receipt
Dec 15, 2020
Letter accompanying subsequently filed items
Dec 15, 2020
Oral proceedings: reply to date proposed
Dec 11, 2020
Notification concerning the date of oral proceedings
Dec 11, 2020
Notification concerning the date of oral proceedings
Jun 22, 2020
Advice of delivery
Jun 18, 2020
Advice of delivery
Jun 12, 2020
Acknowledgement of a document
Jun 12, 2020
Acknowledgement of a document
Jun 12, 2020
Information concerning oral proceedings
Jun 12, 2020
Summons to attend oral proceedings
Jun 12, 2020
Summons to attend oral proceedings
Jun 9, 2020
Brief communication - Opposition proceedings
Jun 9, 2020
Notification concerning the date of oral proceedings
Jun 9, 2020
Notification concerning the date of oral proceedings
Jun 5, 2020
Advice of delivery
Jun 4, 2020
(Electronic) Receipt
Jun 4, 2020
(Electronic) Receipt
Jun 4, 2020
Any annexes (other than citation) to an opposition letter
Jun 4, 2020
Letter accompanying subsequently filed items
Jun 4, 2020
Letter accompanying subsequently filed items
Jun 4, 2020
Oral proceedings: Request for postponement
Jun 4, 2020
Oral proceedings: Request for postponement
Jun 2, 2020
Advice of delivery
May 28, 2020
Acknowledgement of a document
May 28, 2020
Acknowledgement of a document
May 28, 2020
Annex to the communication - opposition
May 28, 2020
Information concerning oral proceedings
May 28, 2020
Summons to attend oral proceedings
May 28, 2020
Summons to attend oral proceedings
Mar 2, 2020
Brief communication - Opposition proceedings
Feb 26, 2020
(Electronic) Receipt
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure
Feb 26, 2020
Auxiliary request during Opposition procedure - 01
Feb 26, 2020
Auxiliary request during Opposition procedure - 02
Feb 26, 2020
Auxiliary request during Opposition procedure - 03
Feb 26, 2020
Auxiliary request during Opposition procedure - 04
Feb 26, 2020
Auxiliary request during Opposition procedure - 05
Feb 26, 2020
Auxiliary request during Opposition procedure - 06
Feb 26, 2020
Auxiliary request during Opposition procedure - 07
Feb 26, 2020
Auxiliary request during Opposition procedure - 08
Feb 26, 2020
Auxiliary request during Opposition procedure - 09
Feb 26, 2020
Auxiliary request during Opposition procedure - 10
Feb 26, 2020
Auxiliary request during Opposition procedure - 11
Feb 26, 2020
Citation in opposition procedure - 007
Feb 26, 2020
Citation in opposition procedure - 008
Feb 26, 2020
Letter accompanying subsequently filed items
Feb 26, 2020
Reply of the patent proprietor to the notice(s) of opposition
Dec 17, 2019
Brief communication - Opposition proceedings
Dec 13, 2019
Communication of amended entries
Dec 13, 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 23, 2019
Communication of a notice of opposition and request to file observations
Oct 23, 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
(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
International publication (Pamphlet)
Oct 9, 2019
Letter accompanying subsequently filed items
Oct 9, 2019
Letter regarding the opposition procedure (no time limit)
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 23, 2018
Bibliographic data of the European patent application
Jul 23, 2018
Communication about intention to grant a European patent
Jul 23, 2018
Intention to grant (signatures)
Jul 23, 2018
Text intended for grant (clean copy)
Jul 23, 2018
Text intended for grant (version for approval)
Jun 22, 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
Reply to Written Opinion prepared by the EPO
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
Sep 25, 2017
Annexes to the international preliminary examination report
Sep 25, 2017
Copy of the international preliminary examination report
Aug 21, 2017
(Electronic) Receipt
Aug 21, 2017
Request for entry into the European phase
Jul 26, 2017
Information on entry into European phase
Mar 23, 2017
Annex to International preliminary examination report
Mar 23, 2017
International preliminary examination report
Mar 23, 2017
International preliminary examination report - free text sheet
Mar 23, 2017
International preliminary examination report - points I-VIII
Mar 23, 2017
Transmittal of International Preliminary Examination Report
Oct 17, 2016
Notification of election of EPO
Oct 11, 2016
Priority document (electronically transmitted)
Oct 5, 2016
Amendments of documents (Article 19 PCT) (without attachments)
Sep 28, 2016
Notification of receipt of demand
Sep 22, 2016
Copy of the international search report
Sep 22, 2016
Published international application - A1
Sep 10, 2016
Document concerning fees and payments
Sep 10, 2016
Non-patent literature cited during the examination procedure
Sep 10, 2016
PCT demand form
Sep 10, 2016
PCT(IPEA): Amended sheet - claims
Sep 10, 2016
PCT(IPEA): Amended sheet - claims
Sep 10, 2016
Reply to International Search Opinion
Sep 10, 2016
Submission concerning representation
Sep 8, 2016
Document concerning fees and payments
Sep 8, 2016
Non-patent literature cited during the examination procedure
Sep 8, 2016
PCT demand form
Sep 8, 2016
PCT(IPEA): Amended sheet - claims
Sep 8, 2016
PCT(IPEA): Amended sheet - claims
Sep 8, 2016
Payment of fees and costs
Sep 8, 2016
Reply to International Search Opinion
Sep 8, 2016
Submission concerning representation
Jun 9, 2016
ISR: cited documents
Jun 8, 2016
Written opinion of the ISA, boxes No. I to VIII
Jun 8, 2016
Written opinion of the ISA, cover sheet
Jun 8, 2016
Written opinion of the ISA, supplemental box
Apr 19, 2016
Notification of receipt of Search copy
Apr 4, 2016
Abstract
Apr 4, 2016
Annex
Apr 4, 2016
Claims
Apr 4, 2016
Description
Apr 4, 2016
Drawings
Apr 4, 2016
Fee calculation sheet for an international application
Apr 4, 2016
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Apr 4, 2016
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Apr 4, 2016
Request form for international application (copy for ISA/EP)

EP3271404

DOW

Application Number: EP16714626A
Filing Date: Mar 8, 2016
Status: Opposition Rejected; Aug 6, 2021
Publication Date: Jan 9, 2019
External Links: Slate, Register , Google Patents

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Water-Soluble Esterified Cellulose Ethers

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Dossier Documents

EP3271404