Novel Esterified Cellulose Ethers Of High Molecular Weight And Homogeneity

Patent No. EP2888290 (titled "Novel Esterified Cellulose Ethers Of High Molecular Weight And Homogeneity") was filed by DOW on Aug 15, 2013. The application was issued on Dec 26, 2018.

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	Sep 26, 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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Sep 30, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Sep 30, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Sep 27, 2021
Termination of the opposition proceedings with maintenance of patent
Jul 21, 2021
Advice of delivery
Jul 21, 2021
Communication about missing advice of delivery
Jun 25, 2021
Advice of delivery
Jun 16, 2021
Annex to the communication - opposition
Jun 16, 2021
Decision of the Opposition Division and instruction
Jun 16, 2021
Decision rejecting the opposition
Jun 16, 2021
Grounds for the decision (Annex) - opposition
Jun 16, 2021
Internal form - Opposition/addressees
Jun 16, 2021
Internal form - Opposition/addressees
Jun 16, 2021
Means of redress
Jun 16, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 16, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 16, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 16, 2021
Provision of a copy of the minutes - opposition procedure
Jun 16, 2021
Transmittal of decision / summons - opposition
Jun 16, 2021
Transmittal of decision / summons - opposition
Jun 1, 2021
Information about the result of oral proceedings
Mar 12, 2021
Brief communication - Opposition proceedings
Mar 9, 2021
(Electronic) Receipt
Mar 9, 2021
Auxiliary request during Opposition procedure
Mar 9, 2021
Auxiliary request during Opposition procedure
Mar 9, 2021
Auxiliary request during Opposition procedure - 04
Mar 9, 2021
Auxiliary request during Opposition procedure - 07
Mar 9, 2021
Letter accompanying subsequently filed items
Mar 9, 2021
Written submission in preparation to/during oral proceedings
Feb 25, 2021
Notification concerning the date of oral proceedings
Feb 25, 2021
Notification concerning the date of oral proceedings
Sep 29, 2020
Advice of delivery
Sep 28, 2020
Advice of delivery
Sep 21, 2020
Acknowledgement of a document
Sep 21, 2020
Acknowledgement of a document
Sep 21, 2020
Annex to the communication - opposition
Sep 21, 2020
Summons to attend oral proceedings
Sep 21, 2020
Summons to attend oral proceedings
Sep 16, 2020
Brief communication - Opposition proceedings
Sep 11, 2020
(Electronic) Receipt
Sep 11, 2020
Letter accompanying subsequently filed items
Sep 11, 2020
Written submission in preparation to/during oral proceedings
Sep 7, 2020
Notification concerning the date of oral proceedings
Sep 7, 2020
Notification concerning the date of oral proceedings
Aug 28, 2020
Brief communication - Opposition proceedings
Aug 25, 2020
(Electronic) Receipt
Aug 25, 2020
Letter accompanying subsequently filed items
Aug 25, 2020
Oral proceedings: reply to date proposed
Mar 16, 2020
Advice of delivery
Mar 16, 2020
Advice of delivery
Mar 11, 2020
Acknowledgement of a document
Mar 11, 2020
Acknowledgement of a document
Mar 11, 2020
Annex to the communication - opposition
Mar 11, 2020
Information concerning oral proceedings
Mar 11, 2020
Summons to attend oral proceedings
Mar 11, 2020
Summons to attend oral proceedings
Feb 24, 2020
Brief communication - Opposition proceedings
Feb 19, 2020
(Electronic) Receipt
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure
Feb 19, 2020
Auxiliary request during Opposition procedure - 01
Feb 19, 2020
Auxiliary request during Opposition procedure - 02
Feb 19, 2020
Auxiliary request during Opposition procedure - 03
Feb 19, 2020
Auxiliary request during Opposition procedure - 04
Feb 19, 2020
Auxiliary request during Opposition procedure - 05
Feb 19, 2020
Auxiliary request during Opposition procedure - 06
Feb 19, 2020
Auxiliary request during Opposition procedure - 07
Feb 19, 2020
Letter accompanying subsequently filed items
Feb 19, 2020
Reply of the patent proprietor to the notice(s) of opposition
Oct 9, 2019
Communication of a notice of opposition and request to file observations
Oct 9, 2019
Notice of further oppositions to opponent(s)
Oct 4, 2019
Communication of a notice of opposition - first information to patent proprietor
Sep 30, 2019
Consolidated list of cited opposition documents
Sep 26, 2019
(Electronic) Receipt
Sep 26, 2019
Citation in opposition procedure - 001
Sep 26, 2019
Citation in opposition procedure - 002
Sep 26, 2019
Citation in opposition procedure - 003
Sep 26, 2019
Citation in opposition procedure - 004
Sep 26, 2019
Citation in opposition procedure - 005
Sep 26, 2019
Citation in opposition procedure - 005
Sep 26, 2019
Citation in opposition procedure - 006
Sep 26, 2019
Citation in opposition procedure - 007
Sep 26, 2019
Citation in opposition procedure - 008
Sep 26, 2019
Citation in opposition procedure - 009
Sep 26, 2019
Notice of opposition
Sep 26, 2019
Notice of opposition
Jan 9, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 29, 2018
Decision to grant a European patent
Nov 12, 2018
(Electronic) Receipt
Nov 12, 2018
Filing of the translations of the claims
Nov 12, 2018
French translation of claims
Nov 12, 2018
German translation of the claims
Nov 12, 2018
Letter accompanying subsequently filed items
Jul 4, 2018
Bibliographic data of the European patent application
Jul 4, 2018
Communication about intention to grant a European patent
Jul 4, 2018
Intention to grant (signatures)
Jul 4, 2018
Text intended for grant (clean copy)
Jul 4, 2018
Text intended for grant (version for approval)
May 23, 2018
Examination started
Feb 15, 2018
Notification regarding date of start of examination with possibility to withdraw
Sep 14, 2015
Non-patent literature cited during the examination procedure
Sep 14, 2015
Reply to Written Opinion prepared by the EPO
Jun 10, 2015
Communication to designated inventor
Jun 10, 2015
Communication to designated inventor
Jun 3, 2015
Notification on forthcoming publication of bibliographic data
May 20, 2015
Letter concerning the inventor
May 18, 2015
Letter concerning the inventor
May 13, 2015
Invitation to indicate correct address of inventor
May 13, 2015
Letter concerning the inventor
May 8, 2015
Invitation to indicate correct address of inventor
May 4, 2015
Letter which had not been notified
Apr 23, 2015
Letter which had not been notified
Mar 31, 2015
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Mar 27, 2015
Communication to designated inventor
Mar 27, 2015
Communication to designated inventor
Mar 27, 2015
Communication to designated inventor
Mar 27, 2015
Communication to designated inventor
Mar 7, 2015
Payment of fees and costs
Mar 7, 2015
Request for entry into the European phase
Mar 5, 2015
Annexes to the international preliminary examination report
Mar 5, 2015
Copy of the international preliminary examination report
Jan 8, 2015
Information on entry into European phase
Dec 22, 2014
Annex to International preliminary examination report
Dec 22, 2014
International preliminary examination report
Dec 22, 2014
International preliminary examination report - free text sheet
Dec 22, 2014
International preliminary examination report - points I-VIII
Dec 22, 2014
Transmittal of International Preliminary Examination Report
Sep 27, 2014
Non-patent literature cited during the examination procedure
Sep 27, 2014
PCT(IPEA): Amended sheet - claims
Sep 27, 2014
PCT(IPEA): Amended sheet - claims
Sep 27, 2014
Reply to communication PCT/IPEA/408
Aug 8, 2014
Written opinion
Aug 8, 2014
Written opinion - free text sheet
Aug 8, 2014
Written opinion - points I-VIII
Jun 17, 2014
Notification of election of EPO
Jun 4, 2014
Amendments of documents (Article 19 PCT)
May 23, 2014
Priority document (electronically transmitted)
May 22, 2014
Notification of receipt of demand
May 10, 2014
PCT demand form
May 10, 2014
PCT(IPEA): Amended sheet - claims
May 10, 2014
PCT(IPEA): Amended sheet - claims
May 10, 2014
Payment of fees and costs
May 10, 2014
Reply to International Search Opinion
May 10, 2014
Submission concerning representation
Mar 19, 2014
CDS Clean up - amended applicant details
Feb 27, 2014
Copy of the international search report
Feb 27, 2014
Published international application - A1
Nov 18, 2013
Written opinion of the ISA, boxes No. I to VIII
Nov 18, 2013
Written opinion of the ISA, cover sheet
Nov 18, 2013
Written opinion of the ISA, supplemental box

EP2888290

DOW

Application Number: EP13752793A
Filing Date: Aug 15, 2013
Status: Opposition Rejected; Oct 1, 2021
Publication Date: Dec 26, 2018
External Links: Slate, Register , Google Patents

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Novel Esterified Cellulose Ethers Of High Molecular Weight And Homogeneity

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Dossier Documents

EP2888290