Process For Preparing A Mixture Of A Cellulose Derivative And A Liquid Diluent

Patent No. EP3077098 (titled "Process For Preparing A Mixture Of A Cellulose Derivative And A Liquid Diluent") was filed by DOW on Dec 1, 2014. The application was issued on Mar 7, 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	Dec 7, 2018	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 22, 2021
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Jul 22, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jul 19, 2021
Termination of the opposition proceedings with maintenance of patent
Apr 13, 2021
Advice of delivery
Apr 7, 2021
Annex to the communication - opposition
Apr 7, 2021
Decision of the Opposition Division and instruction
Apr 7, 2021
Decision rejecting the opposition
Apr 7, 2021
Grounds for the decision (Annex) - opposition
Apr 7, 2021
Internal form - Opposition/addressees
Apr 7, 2021
Internal form - Opposition/addressees
Apr 7, 2021
Means of redress
Apr 7, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 7, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 7, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 7, 2021
Provision of a copy of the minutes - opposition procedure
Apr 7, 2021
Transmittal of decision / summons - opposition
Apr 7, 2021
Transmittal of decision / summons - opposition
Feb 9, 2021
Information about the result of oral proceedings
Jan 11, 2021
(Electronic) Receipt
Jan 11, 2021
Letter accompanying subsequently filed items
Jan 11, 2021
Oral proceedings: reply to date proposed
Dec 21, 2020
Letter accompanying subsequently filed items
Dec 11, 2020
Notification concerning the date of oral proceedings
Dec 11, 2020
Notification concerning the date of oral proceedings
Dec 9, 2020
(Electronic) Receipt
Dec 9, 2020
Letter accompanying subsequently filed items
Dec 9, 2020
Request for interpreters during oral proceedings
Dec 4, 2020
(Electronic) Receipt
Dec 4, 2020
Letter accompanying subsequently filed items
Dec 4, 2020
Oral proceedings: reply to date proposed
Oct 15, 2020
Advice of delivery
Apr 24, 2020
Advice of delivery
Apr 23, 2020
Advice of delivery
Apr 20, 2020
Acknowledgement of a document
Apr 20, 2020
Acknowledgement of a document
Apr 20, 2020
Annex to the communication - opposition
Apr 20, 2020
Information concerning oral proceedings
Apr 20, 2020
Summons to attend oral proceedings
Apr 20, 2020
Summons to attend oral proceedings
Mar 27, 2020
Notification concerning the date of oral proceedings
Mar 27, 2020
Notification concerning the date of oral proceedings
Mar 24, 2020
Brief communication - Opposition proceedings
Mar 17, 2020
Letter regarding the opposition procedure (no time limit)
Feb 13, 2020
Brief communication - Opposition proceedings
Feb 6, 2020
Letter regarding the opposition procedure (no time limit)
Jan 27, 2020
Brief communication - Opposition proceedings
Jan 17, 2020
(Electronic) Receipt
Jan 17, 2020
Letter accompanying subsequently filed items
Jan 17, 2020
Written submission in preparation to/during oral proceedings
Nov 5, 2019
Advice of delivery
Oct 2, 2019
Advice of delivery
Sep 5, 2019
Advice of delivery
Aug 30, 2019
Advice of delivery
Aug 27, 2019
Acknowledgement of a document
Aug 27, 2019
Acknowledgement of a document
Aug 27, 2019
Annex to the communication - opposition
Aug 27, 2019
Information concerning oral proceedings
Aug 27, 2019
Summons to attend oral proceedings
Aug 27, 2019
Summons to attend oral proceedings
Aug 15, 2019
Advice of delivery
Aug 1, 2019
Advice of delivery
Jul 23, 2019
Notification concerning the date of oral proceedings
Jul 23, 2019
Notification concerning the date of oral proceedings
Jul 16, 2019
Brief communication - Opposition proceedings
Jul 10, 2019
(Electronic) Receipt
Jul 10, 2019
Advice of delivery
Jul 10, 2019
Any annexes (other than citation) to an opposition letter
Jul 10, 2019
Letter accompanying subsequently filed items
Jul 10, 2019
Written submission in preparation to/during oral proceedings
Jul 9, 2019
Advice of delivery
Jul 3, 2019
Acknowledgement of a document
Jul 3, 2019
Acknowledgement of a document
Jul 3, 2019
Annex to the communication - opposition
Jul 3, 2019
Information concerning oral proceedings
Jul 3, 2019
Summons to attend oral proceedings
Jul 3, 2019
Summons to attend oral proceedings
Apr 29, 2019
Brief communication - Opposition proceedings
Apr 24, 2019
(Electronic) Receipt
Apr 24, 2019
Amended claims with annotations
Apr 24, 2019
Amended claims with annotations
Apr 24, 2019
Claims
Apr 24, 2019
Claims
Apr 24, 2019
Letter accompanying subsequently filed items
Apr 24, 2019
Reply of the patent proprietor to the notice(s) of opposition
Dec 21, 2018
Communication of a notice of opposition and request to file observations
Dec 21, 2018
Notice of further oppositions to opponent(s)
Dec 12, 2018
Communication of a notice of opposition - first information to patent proprietor
Dec 7, 2018
(Electronic) Receipt
Dec 7, 2018
Citation in opposition procedure
Dec 7, 2018
Non-patent literature cited during the opposition procedure
Dec 7, 2018
Non-patent literature cited during the opposition procedure
Dec 7, 2018
Non-patent literature cited during the opposition procedure
Dec 7, 2018
Non-patent literature cited during the opposition procedure
Dec 7, 2018
Non-patent literature cited during the opposition procedure
Dec 7, 2018
Notice of opposition
Dec 7, 2018
Notice of opposition
Dec 7, 2018
Patent document cited during the opposition procedure
Dec 7, 2018
Patent document cited during the opposition procedure
Dec 7, 2018
Patent document cited during the opposition procedure
Dec 7, 2018
Patent document cited during the opposition procedure
Dec 7, 2018
Patent document cited during the opposition procedure
Dec 7, 2018
Translation of the evidence during Opposition procedure
Dec 7, 2018
Translation of the evidence during Opposition procedure
Dec 7, 2018
Translation of the evidence during Opposition procedure
Mar 19, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Feb 8, 2018
Decision to grant a European patent
Jan 26, 2018
(Electronic) Receipt
Jan 26, 2018
Filing of the translations of the claims
Jan 26, 2018
French translation of claims
Jan 26, 2018
German translation of the claims
Jan 26, 2018
Letter accompanying subsequently filed items
Sep 18, 2017
Bibliographic data of the European patent application
Sep 18, 2017
Communication about intention to grant a European patent
Sep 18, 2017
Intention to grant (signatures)
Sep 18, 2017
Text intended for grant (clean copy)
Sep 18, 2017
Text intended for grant (version for approval)
Sep 5, 2017
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Jul 26, 2017
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Jul 11, 2017
(Electronic) Receipt
Jul 11, 2017
Amended claims with annotations
Jul 11, 2017
Claims
Jul 11, 2017
Letter accompanying subsequently filed items
Jul 11, 2017
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
May 19, 2017
Bibliographic data of the European patent application
May 19, 2017
Communication about intention to grant a European patent
May 19, 2017
Intention to grant (signatures)
May 19, 2017
Text intended for grant (clean copy)
May 19, 2017
Text intended for grant (version for approval)
Mar 22, 2017
Examination started
Jan 23, 2017
Amended claims filed after receipt of (European) search report
Jan 23, 2017
Amended claims with annotations
Jan 23, 2017
Amendments received before examination
Jan 19, 2017
Amended claims filed after receipt of (European) search report
Jan 19, 2017
Amended claims with annotations
Jan 19, 2017
Amendments received before examination
Jan 19, 2017
Letter accompanying subsequently filed items
Jan 19, 2017
Letter accompanying subsequently filed items
Sep 14, 2016
Notification on forthcoming publication of bibliographic data
Sep 5, 2016
Communication to designated inventor
Aug 20, 2016
Letter concerning the inventor
Aug 12, 2016
Invitation to indicate correct address of inventor
Aug 4, 2016
Letter which had not been notified
Jul 12, 2016
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jul 8, 2016
Communication to designated inventor
Jul 8, 2016
Communication to designated inventor
Jul 8, 2016
Communication to designated inventor
Jul 8, 2016
Communication to designated inventor
Jun 20, 2016
Copy of the international preliminary report on patentability
Mar 31, 2016
Payment of fees and costs
Mar 31, 2016
Request for entry into the European phase
Jun 29, 2015
Priority document (electronically transmitted)
Jun 11, 2015
Copy of the international search report
Jun 11, 2015
Published international application - A1
Mar 4, 2015
Written opinion of the ISA, boxes No. I to VIII
Mar 4, 2015
Written opinion of the ISA, cover sheet
Mar 4, 2015
Written opinion of the ISA, supplemental box
Dec 15, 2014
Abstract
Dec 15, 2014
Annex
Dec 15, 2014
Claims
Dec 15, 2014
Description

EP3077098

DOW

Application Number: EP14815535A
Filing Date: Dec 1, 2014
Status: Opposition Rejected; Jul 23, 2021
Publication Date: Mar 7, 2018
External Links: Slate, Register , Google Patents

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Process For Preparing A Mixture Of A Cellulose Derivative And A Liquid Diluent

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Dossier Documents

EP3077098