Polymer Polyols Having Improved Quality

Patent No. EP2890726 (titled "Polymer Polyols Having Improved Quality") was filed by Bayer Materialscience on Aug 22, 2013. The application was issued on Mar 24, 2021.

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
ARKEMA FRANCE	Jan 3, 2022	BANDPAY & GREUTER
REPSOL	Dec 23, 2021	ZBM PATENTS ZEA

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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Jan 24, 2024
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jan 24, 2024
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jan 24, 2024
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Oct 10, 2023
Advice of delivery
Oct 10, 2023
Annex to the communication - opposition
Oct 10, 2023
Decision revoking the European patent
Oct 10, 2023
Decision revoking the European patent
Oct 10, 2023
Decision revoking the European patent
Oct 10, 2023
Grounds for the decision (Annex) - opposition
Oct 10, 2023
Means of redress
Oct 10, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 10, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 10, 2023
Provision of a copy of the minutes - opposition procedure
Oct 10, 2023
Provision of a copy of the minutes - opposition procedure
Oct 10, 2023
Provision of a copy of the minutes - opposition procedure
Oct 10, 2023
Scanned annex to a communication - opposition procedure
Oct 10, 2023
Transmittal of decision / summons - opposition
Oct 10, 2023
Transmittal of decision / summons - opposition
Oct 10, 2023
Transmittal of decision / summons - opposition
Oct 6, 2023
Decision of the Opposition Division and instruction
Sep 14, 2023
Information about the result of oral proceedings
Jul 21, 2023
Brief communication - Opposition proceedings
Jul 21, 2023
Brief communication - Opposition proceedings
Jul 21, 2023
Brief communication - Opposition proceedings
Jul 21, 2023
Brief communication - Opposition proceedings
Jul 17, 2023
Brief communication - Opposition proceedings
Jul 17, 2023
Brief communication - Opposition proceedings
Jul 14, 2023
(Electronic) Receipt
Jul 14, 2023
Letter accompanying subsequently filed items
Jul 14, 2023
Request for interpreters during oral proceedings
Jul 14, 2023
Written submission in preparation to/during oral proceedings
Jul 13, 2023
(Electronic) Receipt
Jul 13, 2023
Citation in opposition procedure - 068
Jul 13, 2023
Consolidated list of cited opposition documents
Jul 13, 2023
Letter accompanying subsequently filed items
Jul 13, 2023
Written submission in preparation to/during oral proceedings
Jul 7, 2023
(Electronic) Receipt
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure
Jul 7, 2023
Auxiliary request during Opposition procedure - 01
Jul 7, 2023
Auxiliary request during Opposition procedure - 02
Jul 7, 2023
Auxiliary request during Opposition procedure - 03
Jul 7, 2023
Auxiliary request during Opposition procedure - 04
Jul 7, 2023
Auxiliary request during Opposition procedure - 05
Jul 7, 2023
Auxiliary request during Opposition procedure - 06
Jul 7, 2023
Auxiliary request during Opposition procedure - 07
Jul 7, 2023
Auxiliary request during Opposition procedure - 08
Jul 7, 2023
Auxiliary request during Opposition procedure - 09
Jul 7, 2023
Auxiliary request during Opposition procedure - 10
Jul 7, 2023
Auxiliary request during Opposition procedure - 11
Jul 7, 2023
Auxiliary request during Opposition procedure - 12
Jul 7, 2023
Auxiliary request during Opposition procedure - 13
Jul 7, 2023
Auxiliary request during Opposition procedure - 14
Jul 7, 2023
Auxiliary request during Opposition procedure - 15
Jul 7, 2023
Auxiliary request during Opposition procedure - 16
Jul 7, 2023
Auxiliary request during Opposition procedure - 17
Jul 7, 2023
Letter accompanying subsequently filed items
Jul 7, 2023
Written submission in preparation to/during oral proceedings
Jul 3, 2023
Brief communication - Opposition proceedings
Jul 3, 2023
Brief communication - Opposition proceedings
Jun 30, 2023
Communication of amended entries
Jun 30, 2023
Communication of amended entries
Jun 26, 2023
(Electronic) Receipt
Jun 26, 2023
Letter accompanying subsequently filed items (CDR)
Jun 26, 2023
Request for change of opponent's representative
Feb 3, 2023
Notification concerning the date of oral proceedings
Feb 3, 2023
Notification concerning the date of oral proceedings
Feb 3, 2023
Notification concerning the date of oral proceedings
Dec 12, 2022
Brief communication - Opposition proceedings
Dec 12, 2022
Brief communication - Opposition proceedings
Dec 8, 2022
Brief communication - Opposition proceedings
Dec 8, 2022
Brief communication - Opposition proceedings
Dec 2, 2022
(Electronic) Receipt
Dec 2, 2022
Letter accompanying subsequently filed items
Dec 1, 2022
(Electronic) Receipt
Dec 1, 2022
Letter accompanying subsequently filed items
Dec 1, 2022
Letter regarding the opposition procedure (no time limit)
Oct 17, 2022
(Electronic) Receipt
Oct 17, 2022
Advice of delivery
Oct 17, 2022
Letter accompanying subsequently filed items
Oct 14, 2022
Advice of delivery
Oct 10, 2022
Annex to the communication - opposition
Oct 10, 2022
Information concerning oral proceedings
Oct 10, 2022
Scanned annex to a communication - opposition procedure
Oct 10, 2022
Summons to attend oral proceedings
Oct 10, 2022
Summons to attend oral proceedings
Oct 10, 2022
Summons to attend oral proceedings
Oct 10, 2022
Transmittal of decision / summons - opposition
Oct 10, 2022
Transmittal of decision / summons - opposition
Oct 10, 2022
Transmittal of decision / summons - opposition
Jun 2, 2022
Communication for party to proceedings/third party
Jun 2, 2022
Communication for party to proceedings/third party
May 24, 2022
(Electronic) Receipt
May 24, 2022
Auxiliary request during Opposition procedure
May 24, 2022
Auxiliary request during Opposition procedure
May 24, 2022
Auxiliary request during Opposition procedure
May 24, 2022
Auxiliary request during Opposition procedure
May 24, 2022
Auxiliary request during Opposition procedure
May 24, 2022
Auxiliary request during Opposition procedure - 01
May 24, 2022
Auxiliary request during Opposition procedure - 02
May 24, 2022
Auxiliary request during Opposition procedure - 03
May 24, 2022
Auxiliary request during Opposition procedure - 04
May 24, 2022
Auxiliary request during Opposition procedure - 05
May 24, 2022
Letter accompanying subsequently filed items
May 24, 2022
Main request during Opposition procedure
May 24, 2022
Main request during Opposition procedure
May 24, 2022
Reply of the patent proprietor to the notice(s) of opposition
Jan 19, 2022
Communication of a notice of opposition and request to file observations
Jan 19, 2022
Notice of further oppositions to opponent(s)
Jan 19, 2022
Notice of further oppositions to opponent(s)
Jan 17, 2022
Communication of a notice of opposition - first information to patent proprietor
Jan 17, 2022
Communication of a notice of opposition - first information to patent proprietor
Jan 3, 2022
(Electronic) Receipt
Jan 3, 2022
Citation in opposition procedure
Jan 3, 2022
Citation in opposition procedure
Jan 3, 2022
Citation in opposition procedure
Jan 3, 2022
Citation in opposition procedure - 060
Jan 3, 2022
Citation in opposition procedure - 061
Jan 3, 2022
Citation in opposition procedure - 062
Jan 3, 2022
Citation in opposition procedure - 063
Jan 3, 2022
Citation in opposition procedure - 064
Jan 3, 2022
Citation in opposition procedure - 065
Jan 3, 2022
Citation in opposition procedure - 066
Jan 3, 2022
Citation in opposition procedure - 067
Jan 3, 2022
Notice of opposition
Jan 3, 2022
Notice of opposition
Dec 23, 2021
(Electronic) Receipt
Dec 23, 2021
Any annexes (other than citation) to an opposition letter
Dec 23, 2021
Citation in opposition procedure - 001
Dec 23, 2021
Citation in opposition procedure - 001
Dec 23, 2021
Citation in opposition procedure - 001
Dec 23, 2021
Citation in opposition procedure - 001
Dec 23, 2021
Citation in opposition procedure - 002
Dec 23, 2021
Citation in opposition procedure - 002
Dec 23, 2021
Citation in opposition procedure - 003
Dec 23, 2021
Citation in opposition procedure - 004
Dec 23, 2021
Citation in opposition procedure - 005
Dec 23, 2021
Citation in opposition procedure - 006
Dec 23, 2021
Citation in opposition procedure - 007
Dec 23, 2021
Citation in opposition procedure - 008
Dec 23, 2021
Citation in opposition procedure - 009
Dec 23, 2021
Citation in opposition procedure - 010
Dec 23, 2021
Citation in opposition procedure - 011
Dec 23, 2021
Citation in opposition procedure - 013
Dec 23, 2021
Citation in opposition procedure - 027
Dec 23, 2021
Citation in opposition procedure - 027
Dec 23, 2021
Citation in opposition procedure - 029
Dec 23, 2021
Citation in opposition procedure - 057
Dec 23, 2021
Citation in opposition procedure - 057
Dec 23, 2021
Notice of opposition
Dec 23, 2021
Notice of opposition
Apr 6, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Feb 25, 2021
Decision to grant a European patent
Feb 15, 2021
(Electronic) Receipt
Feb 15, 2021
Filing of the translations of the claims
Feb 15, 2021
French translation of claims
Feb 15, 2021
German translation of the claims
Feb 15, 2021
Letter accompanying subsequently filed items
Dec 4, 2020
Bibliographic data of the European patent application
Dec 4, 2020
Communication about intention to grant a European patent
Dec 4, 2020
Intention to grant (signatures)
Dec 4, 2020
Text intended for grant (clean copy)
Dec 4, 2020
Text intended for grant (version for approval)
Sep 19, 2017
(Electronic) Receipt
Sep 19, 2017
Amended claims with annotations
Sep 19, 2017
Claims
Sep 19, 2017
Letter accompanying subsequently filed items
Sep 19, 2017
Reply to communication from the Examining Division
Jul 27, 2017
Annex to the communication
Jul 27, 2017
Communication from the Examining Division
Jul 14, 2017
Examination started
Oct 10, 2016
Submission concerning representation
Oct 6, 2016
(Electronic) Receipt
Oct 6, 2016
Abstract
Oct 6, 2016
Abstract
Oct 6, 2016
Amended claims filed after receipt of (European) search report
Oct 6, 2016
Amended claims with annotations
Oct 6, 2016
Amended description filed after receipt of (European) search report
Oct 6, 2016
Amended description with annotations
Oct 6, 2016
Amendments received before examination
Oct 6, 2016
Letter accompanying subsequently filed items
Mar 31, 2016
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Mar 10, 2016
Communication regarding the transmission of the European search report
Mar 10, 2016
European search opinion
Mar 10, 2016
Information on Search Strategy
Mar 10, 2016
Supplementary European search report
Mar 1, 2016
Search started
Sep 25, 2015
Communication of amended entries concerning the representative
Sep 25, 2015
Communication of the registration of a transfer or change of name and/or address
Sep 17, 2015
Letter relating to the automatic debiting procedure
Sep 11, 2015
Submission concerning change of applicant's name
Sep 1, 2015
Confirmation of revocation of automatic debit order
Aug 17, 2015
Letter relating to the automatic debiting procedure
Jun 11, 2015
CDS Clean up - amended data concerning the representative of the applicant (Association)
Jun 10, 2015
Notification on forthcoming publication of bibliographic data
Apr 13, 2015
Communication regarding possible amendment of the application/payment of claims fee
Apr 9, 2015
Communication to designated inventor
Apr 9, 2015
Communication to designated inventor
Apr 9, 2015
Communication to designated inventor
Mar 17, 2015
Copy of the international preliminary report on patentability
Jan 28, 2015
(Electronic) Receipt
Jan 28, 2015
Request for entry into the European phase
Jan 9, 2015
Information on entry into European phase
Mar 25, 2014
Priority document (electronically transmitted)
Mar 11, 2014
Notification of the recording of a change
Mar 6, 2014
Copy of the international search report
Mar 6, 2014
Published international application - A1

EP2890726

BAYER MATERIALSCIENCE

Application Number: EP13832458A
Filing Date: Aug 22, 2013
Status: Revoked; Jan 26, 2024
Publication Date: Mar 24, 2021
External Links: Slate, Register , Google Patents

IP Verse

Polymer Polyols Having Improved Quality

Patent Summary

Patent Family

Patent Oppositions (2)

Dossier Documents

EP2890726