Gelling Esterified Cellulose Ethers

Patent No. EP3270970 (titled "Gelling 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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Mar 2, 2021
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Feb 25, 2021
Termination of the opposition proceedings with maintenance of patent
Nov 16, 2020
Decision to discontinue the opposition proceedings
Nov 16, 2020
Notification concerning the date of oral proceedings
Nov 11, 2020
Brief communication - Opposition proceedings
Nov 11, 2020
Brief communication - Opposition proceedings
Nov 5, 2020
(Electronic) Receipt
Nov 5, 2020
Letter accompanying subsequently filed items
Nov 5, 2020
Withdrawal of an opposition
Apr 14, 2020
Advice of delivery
Apr 7, 2020
Advice of delivery
Apr 2, 2020
Acknowledgement of a document
Apr 2, 2020
Acknowledgement of a document
Apr 2, 2020
Annex to the communication - opposition
Apr 2, 2020
Information concerning oral proceedings
Apr 2, 2020
Summons to attend oral proceedings
Apr 2, 2020
Summons to attend oral proceedings
Mar 2, 2020
Brief communication - Opposition proceedings
Feb 25, 2020
(Electronic) Receipt
Feb 25, 2020
Amended claims with annotations
Feb 25, 2020
Amended claims with annotations
Feb 25, 2020
Amended claims with annotations
Feb 25, 2020
Citation in opposition procedure - 006
Feb 25, 2020
Citation in opposition procedure - 007
Feb 25, 2020
Claims
Feb 25, 2020
Claims
Feb 25, 2020
Claims
Feb 25, 2020
Consolidated list of cited opposition documents
Feb 25, 2020
Letter accompanying subsequently filed items
Feb 25, 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 - 001
Oct 9, 2019
Citation in opposition procedure - 002
Oct 9, 2019
Citation in opposition procedure - 003
Oct 9, 2019
Citation in opposition procedure - 004
Oct 9, 2019
Citation in opposition procedure - 004
Oct 9, 2019
Citation in opposition procedure - 005
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 27, 2018
Bibliographic data of the European patent application
Jul 27, 2018
Communication about intention to grant a European patent
Jul 27, 2018
Intention to grant (signatures)
Jul 27, 2018
Text intended for grant (clean copy)
Jul 27, 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
Sep 25, 2017
Annexes to the international preliminary examination report
Sep 25, 2017
Annexes to the international preliminary examination report
Sep 25, 2017
Copy of the international preliminary examination report
Sep 25, 2017
Copy of the international preliminary examination report
Sep 25, 2017
Transmission of a document (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 17, 2017
Annex to International preliminary examination report
Mar 17, 2017
International preliminary examination report
Mar 17, 2017
International preliminary examination report - free text sheet
Mar 17, 2017
International preliminary examination report - points I-VIII
Mar 17, 2017
Transmittal of International Preliminary Examination Report
Oct 11, 2016
Priority document (electronically transmitted)
Sep 22, 2016
Copy of the international search report
Sep 22, 2016
Published international application - A1
Sep 14, 2016
Amendments of documents (Article 19 PCT) (without attachments)
Sep 7, 2016
Notification of receipt of demand
Sep 3, 2016
Document concerning fees and payments
Sep 3, 2016
PCT demand form
Sep 3, 2016
PCT(IPEA): Amended sheet - claims
Sep 3, 2016
PCT(IPEA): Amended sheet - claims
Sep 3, 2016
Reply to International Search Opinion
Sep 3, 2016
Submission concerning representation
Sep 1, 2016
Document concerning fees and payments
Sep 1, 2016
PCT demand form
Sep 1, 2016
PCT(IPEA): Amended sheet - claims
Sep 1, 2016
PCT(IPEA): Amended sheet - claims
Sep 1, 2016
Payment of fees and costs
Sep 1, 2016
Reply to International Search Opinion
Sep 1, 2016
Submission concerning representation
Jul 15, 2016
ISR: cited documents
Jul 14, 2016
Written opinion of the ISA, boxes No. I to VIII
Jul 14, 2016
Written opinion of the ISA, cover sheet
Jul 14, 2016
Written opinion of the ISA, supplemental box
May 18, 2016
Annex
May 18, 2016
Incoming letter related to ISA procedure
May 18, 2016
Substitute sheet (Rule 26) - drawings for ISA/EP
Apr 18, 2016
Communication in Cases for Which No Other Form Is Applicable (copy for ISA/EP)
Apr 11, 2016
Notification of receipt of Search copy
Apr 5, 2016
Notification of the recording of a change
Mar 21, 2016
Abstract
Mar 21, 2016
Annex
Mar 21, 2016
Claims
Mar 21, 2016
Description
Mar 21, 2016
Drawings
Mar 21, 2016
Fee calculation sheet for an international application
Mar 21, 2016
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Mar 21, 2016
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Mar 21, 2016
Request form for international application (copy for ISA/EP)

EP3270970

DOW

Application Number: EP16711736A
Filing Date: Mar 8, 2016
Status: Granted And Under Opposition; Dec 7, 2018
Publication Date: Jan 9, 2019
External Links: Slate, Register , Google Patents

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Gelling Esterified Cellulose Ethers

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Dossier Documents

EP3270970