Aqueous Solution Of An Esterified Cellulose Ether

Patent No. EP3270973 (titled "Aqueous Solution Of An Esterified Cellulose Ether") 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 8, 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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Jul 29, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Jul 29, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jul 26, 2021
Termination of the opposition proceedings with maintenance of patent
Apr 21, 2021
Advice of delivery
Apr 21, 2021
Advice of delivery
Apr 14, 2021
Annex to the communication - opposition
Apr 14, 2021
Decision of the Opposition Division and instruction
Apr 14, 2021
Decision rejecting the opposition
Apr 14, 2021
Grounds for the decision (Annex) - opposition
Apr 14, 2021
Internal form - Opposition/addressees
Apr 14, 2021
Internal form - Opposition/addressees
Apr 14, 2021
Means of redress
Apr 14, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 14, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 14, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 14, 2021
Provision of a copy of the minutes - opposition procedure
Apr 14, 2021
Scanned annex to a communication - opposition procedure
Apr 14, 2021
Scanned annex to a communication - opposition procedure
Apr 14, 2021
Transmittal of decision / summons - opposition
Apr 14, 2021
Transmittal of decision / summons - opposition
Mar 4, 2021
Brief communication - Opposition proceedings
Mar 4, 2021
Brief communication - Opposition proceedings
Mar 4, 2021
Information about the result of oral proceedings
Feb 11, 2021
Brief communication - Opposition proceedings
Feb 4, 2021
(Electronic) Receipt
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure
Feb 4, 2021
Auxiliary request during Opposition procedure - 01
Feb 4, 2021
Auxiliary request during Opposition procedure - 05
Feb 4, 2021
Auxiliary request during Opposition procedure - 06
Feb 4, 2021
Auxiliary request during Opposition procedure - 07
Feb 4, 2021
Auxiliary request during Opposition procedure - 08
Feb 4, 2021
Auxiliary request during Opposition procedure - 09
Feb 4, 2021
Auxiliary request during Opposition procedure - 10
Feb 4, 2021
Auxiliary request during Opposition procedure - 11
Feb 4, 2021
Auxiliary request during Opposition procedure - 12
Feb 4, 2021
Auxiliary request during Opposition procedure - 13
Feb 4, 2021
Auxiliary request during Opposition procedure - 14
Feb 4, 2021
Citation in opposition procedure - 001
Feb 4, 2021
Citation in opposition procedure - 009
Feb 4, 2021
Consolidated list of cited opposition documents
Feb 4, 2021
Letter accompanying subsequently filed items
Feb 4, 2021
Written submission in preparation to/during oral proceedings
Feb 2, 2021
(Electronic) Receipt
Jan 22, 2021
(Electronic) Receipt
Jan 15, 2021
Brief communication - Opposition proceedings
Jan 4, 2021
(Electronic) Receipt
Jan 4, 2021
Citation in opposition procedure - 008
Jan 4, 2021
Letter accompanying subsequently filed items
Jan 4, 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
Written submission in preparation to/during oral proceedings
Dec 11, 2020
Notification concerning the date of oral proceedings
Dec 11, 2020
Notification concerning the date of oral proceedings
Jun 5, 2020
Advice of delivery
Jun 4, 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
Scanned annex to a communication - opposition procedure
May 28, 2020
Summons to attend oral proceedings
May 28, 2020
Summons to attend oral proceedings
Mar 4, 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 - 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
Citation in opposition procedure - 006
Feb 28, 2020
Citation in opposition procedure - 007
Feb 28, 2020
Citation in opposition procedure - 007
Feb 28, 2020
Letter accompanying subsequently filed items
Feb 28, 2020
Reply of the patent proprietor to the notice(s) of opposition
Oct 24, 2019
Communication of a notice of opposition and request to file observations
Oct 24, 2019
Notice of further oppositions to opponent(s)
Oct 14, 2019
Communication of a notice of opposition - first information to patent proprietor
Oct 8, 2019
(Electronic) Receipt
Oct 8, 2019
Citation in opposition procedure - 001
Oct 8, 2019
Citation in opposition procedure - 002
Oct 8, 2019
Citation in opposition procedure - 003
Oct 8, 2019
Citation in opposition procedure - 004
Oct 8, 2019
Citation in opposition procedure - 005
Oct 8, 2019
International publication (Pamphlet)
Oct 8, 2019
Notice of opposition
Oct 8, 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 20, 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
Feb 8, 2017
Annex to International preliminary examination report
Feb 8, 2017
International preliminary examination report
Feb 8, 2017
International preliminary examination report - free text sheet
Feb 8, 2017
International preliminary examination report - points I-VIII
Feb 8, 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
Sep 27, 2016
Notification of election of EPO
Sep 22, 2016
Copy of the international search report
Sep 22, 2016
Published international application - A1
Aug 15, 2016
Amendments of documents (Article 19 PCT) (without attachments)
Aug 10, 2016
Notification of receipt of demand
Aug 6, 2016
PCT demand form
Aug 6, 2016
PCT(IPEA): Amended sheet - claims
Aug 6, 2016
PCT(IPEA): Amended sheet - claims
Aug 6, 2016
Payment of fees and costs
Aug 6, 2016
Reply to International Search Opinion
Aug 6, 2016
Submission concerning representation
Aug 4, 2016
PCT demand form
Aug 4, 2016
PCT(IPEA): Amended sheet - claims
Aug 4, 2016
PCT(IPEA): Amended sheet - claims
Aug 4, 2016
Payment of fees and costs
Aug 4, 2016
Payment of fees and costs
Aug 4, 2016
Reply to International Search Opinion
Aug 4, 2016
Submission concerning representation
Jun 10, 2016
Written opinion of the ISA, boxes No. I to VIII
Jun 10, 2016
Written opinion of the ISA, cover sheet
Jun 10, 2016
Written opinion of the ISA, supplemental box

EP3270973

DOW

Application Number: EP16714625A
Filing Date: Mar 8, 2016
Status: Opposition Rejected; Jul 30, 2021
Publication Date: Jan 9, 2019
External Links: Slate, Register , Google Patents

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Aqueous Solution Of An Esterified Cellulose Ether

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Dossier Documents

EP3270973