Polyisocyanate Mixtures

Patent No. EP2596042 (titled "Polyisocyanate Mixtures") was filed by Bayer on Jul 15, 2011. The application was issued on May 13, 2015.

Patent Family

Statuses, jurisdictions and citation links are shared on request.

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
MITSUI CHEMICALS	Feb 12, 2016	MEWBURN ELLIS

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

Sep 30, 2026
Brief communication - opposition proceedings
Sep 28, 2026
Brief communication - Opposition proceedings
Sep 28, 2026
Communication of the registration of a transfer or change of name and/or address
Sep 23, 2026
(Electronic) Receipt
Sep 23, 2026
Amended description with annotations
Sep 23, 2026
Description
Sep 23, 2026
Letter accompanying subsequently filed items
Sep 23, 2026
Reply to an examination report in opposition proceedings
Sep 22, 2026
(Electronic) Receipt
Sep 22, 2026
Annexes in respect of a client data request
Sep 22, 2026
Annexes in respect of a client data request
Sep 22, 2026
Annexes in respect of a client data request
Sep 22, 2026
Letter accompanying subsequently filed items
Sep 22, 2026
Letter concerning fees and payments
Sep 22, 2026
Submission concerning a transfer of rights (proprietor)
May 26, 2026
Annex to the communication - opposition
May 26, 2026
Communication inviting the parties to file observations
May 26, 2026
Communication inviting the parties to file observations
Nov 17, 2021
Advice of delivery
Nov 16, 2021
Decision of the Board of Appeal
Nov 16, 2021
F3032 Notification(s) of the decision
Nov 16, 2021
F3032 Notification(s) of the decision
Oct 27, 2021
F3013 Oral Proceedings: Forwarding minutes
Oct 27, 2021
F3013 Oral Proceedings: Forwarding minutes
Oct 27, 2021
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Aug 31, 2021
Oral proceedings: change of venue
Aug 31, 2021
Oral proceedings: change of venue
Aug 25, 2021
F3345 Forwarding of submissions to parties
Aug 20, 2021
(Electronic) Receipt
Aug 20, 2021
Letter accompanying subsequently filed items
Aug 20, 2021
Oral proceedings: reply to date proposed
Jul 30, 2021
F3345 Forwarding of submissions to parties
Jul 26, 2021
(Electronic) Receipt
Jul 26, 2021
Letter accompanying subsequently filed items
Jul 26, 2021
Letter dealing with oral proceedings during the appeal procedure
Jul 14, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jul 14, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 10, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 10, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 9, 2020
(Electronic) Receipt
Dec 9, 2020
Advice of delivery
Dec 9, 2020
Letter accompanying subsequently filed items
Nov 18, 2020
Advice of delivery
Nov 16, 2020
F3011.1 Oral Proceedings: summons
Nov 16, 2020
F3011.1 Oral Proceedings: summons
Nov 11, 2020
F3010 Oral proceedings: order for summons
Aug 12, 2020
Communication of the registration of a transfer or change of name and/or address
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Annexes in respect of a client data request
Jun 19, 2020
Letter accompanying subsequently filed items
Jun 19, 2020
Submission concerning a transfer of rights (applicant)
Jan 8, 2019
F3345 Forwarding of submissions to parties
Dec 24, 2018
(Electronic) Receipt
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Cited document during appeal procedure
Dec 24, 2018
Letter accompanying subsequently filed items
Dec 24, 2018
Reply to appeal
Dec 14, 2018
Request for change of opponent's representative
Dec 13, 2018
Request for change of opponent's representative
Nov 21, 2018
Composition of the board (T)
Aug 16, 2018
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Aug 9, 2018
(Electronic) Receipt
Aug 9, 2018
Auxiliary request during appeals procedure - 01
Aug 9, 2018
Auxiliary request during appeals procedure - 01
Aug 9, 2018
Auxiliary request during appeals procedure - 02
Aug 9, 2018
Auxiliary request during appeals procedure - 02
Aug 9, 2018
Auxiliary request during appeals procedure - 03
Aug 9, 2018
Auxiliary request during appeals procedure - 03
Aug 9, 2018
Letter accompanying subsequently filed items
Aug 9, 2018
Main request during Opposition procedure
Aug 9, 2018
Main request during Opposition procedure
Aug 9, 2018
Statement of grounds of appeal
Jul 10, 2018
F3345 Forwarding of submissions to parties
Jul 5, 2018
(Electronic) Receipt
Jul 5, 2018
Letter accompanying subsequently filed items
Jul 5, 2018
Letter relating to Appeal Procedure
Jun 7, 2018
Advice of delivery
Jun 4, 2018
F3045 Inadmissibility of the appeal: missing address / missing name
Jun 4, 2018
F3204 Communication of the file number to the parties
Jun 4, 2018
F3204 Communication of the file number to the parties
Jun 4, 2018
F3345 Forwarding of submissions to parties
May 30, 2018
Processing of an appeal
May 29, 2018
(Electronic) Receipt
May 29, 2018
Letter accompanying subsequently filed items
May 29, 2018
Notice of appeal
May 23, 2018
Advice of delivery
May 17, 2018
(Electronic) Receipt
May 17, 2018
Letter accompanying subsequently filed items
May 17, 2018
Letter regarding the opposition procedure (no time limit)
May 16, 2018
(Electronic) Receipt
May 16, 2018
Advice of delivery
May 16, 2018
Letter accompanying subsequently filed items
Apr 30, 2018
Communication about missing advice of delivery
Apr 17, 2018
Advice of delivery
Apr 16, 2018
(Electronic) Receipt
Apr 16, 2018
Advice of delivery
Apr 16, 2018
Letter accompanying subsequently filed items
Apr 10, 2018
Acknowledgement of a document
Apr 10, 2018
Acknowledgement of a document
Apr 10, 2018
Annex to the communication - opposition
Apr 10, 2018
Decision of the Opposition Division and instruction
Apr 10, 2018
Decision revoking the European patent
Apr 10, 2018
Grounds for the decision (Annex) - opposition
Apr 10, 2018
Internal form - Opposition/addressees
Apr 10, 2018
Internal form - Opposition/addressees
Apr 10, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 10, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 10, 2018
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 10, 2018
Provision of a copy of the minutes - opposition procedure
Apr 10, 2018
Scanned annex to a communication - opposition procedure
Apr 10, 2018
Scanned annex to a communication - opposition procedure
Apr 10, 2018
Scanned annex to a communication - opposition procedure
Mar 14, 2018
Information about the result of oral proceedings
Mar 2, 2018
Brief communication - Opposition proceedings
Mar 2, 2018
Brief communication - Opposition proceedings
Mar 2, 2018
Cover sheet for fax transmission
Feb 28, 2018
(Electronic) Receipt
Feb 28, 2018
Any annexes (other than citation) to an opposition letter
Feb 28, 2018
Written submission in preparation to/during oral proceedings
Feb 27, 2018
(Electronic) Receipt
Feb 27, 2018
Letter accompanying subsequently filed items
Feb 27, 2018
Letter dealing with oral proceedings
Jan 22, 2018
Brief communication - Opposition proceedings
Jan 15, 2018
Letter regarding the opposition procedure (no time limit)
Jan 15, 2018
Request for interpreters during oral proceedings
Jan 31, 2017
Brief communication - Opposition proceedings
Jan 31, 2017
Brief communication - Opposition proceedings
Jan 31, 2017
Information about the result of oral proceedings
Jan 31, 2017
Summons to attend oral proceedings
Jan 31, 2017
Summons to attend oral proceedings
Jan 26, 2017
Letter regarding the opposition procedure (no time limit)
Jan 5, 2017
Advice of delivery
Dec 30, 2016
Advice of delivery
Dec 23, 2016
Advice of delivery
Dec 14, 2016
Acknowledgement of a document
Dec 14, 2016
Acknowledgement of a document
Dec 14, 2016
Annex to the communication - opposition
Dec 14, 2016
Information about the result of oral proceedings
Dec 14, 2016
Information concerning oral proceedings
Dec 14, 2016
Preparation for oral proceedings
Dec 14, 2016
Summons to attend oral proceedings
Dec 14, 2016
Summons to attend oral proceedings
Oct 20, 2016
Brief communication - Opposition proceedings
Oct 10, 2016
Submission concerning representation
Sep 30, 2016
Claims
Sep 30, 2016
Claims
Sep 30, 2016
Claims
Sep 30, 2016
Claims
Sep 30, 2016
Reply of the patent proprietor to the notice(s) of opposition
Jul 26, 2016
Grant of extension of time limit (opposition procedure)
Jul 4, 2016
Communication of amended entries concerning the representative
Jul 4, 2016
Communication of the registration of a transfer or change of name and/or address
Jun 30, 2016
Annexes in respect of a client data request
Jun 30, 2016
Letter regarding the opposition procedure (no time limit)
Jun 30, 2016
Payment of fees and costs
Jun 28, 2016
Annexes in respect of a client data request
Jun 28, 2016
Payment of fees and costs
Jun 28, 2016
Payment of fees and costs
Jun 28, 2016
Payment of fees and costs
Jun 28, 2016
Submission concerning representation
Mar 22, 2016
Communication of a notice of opposition and request to file observations
Mar 22, 2016
Notice of further oppositions to opponent(s)
Feb 22, 2016
Communication of a notice of opposition - first information to patent proprietor
Feb 12, 2016
Any annexes (other than citation) to an opposition letter
Feb 12, 2016
Non-patent literature cited during the opposition procedure
Feb 12, 2016
Non-patent literature cited during the opposition procedure
Feb 12, 2016
Notice of opposition
Feb 12, 2016
Notice of opposition
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Patent document cited during the opposition procedure
Feb 12, 2016
Translation of the evidence during Opposition procedure
Feb 12, 2016
Translation of the evidence during Opposition procedure
Feb 12, 2016
Translation of the evidence during Opposition procedure
Sep 17, 2015
Letter relating to the automatic debiting procedure
Aug 27, 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)
May 13, 2015
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Apr 16, 2015
Decision to grant a European patent
Apr 2, 2015
(Electronic) Receipt
Apr 2, 2015
English translation of the claims
Apr 2, 2015
Filing of the translations of the claims
Apr 2, 2015
French translation of claims
Apr 2, 2015
Letter accompanying subsequently filed items
Feb 13, 2015
Bibliographic data of the European patent application
Feb 13, 2015
Communication about intention to grant a European patent
Feb 13, 2015
Intention to grant (signatures)
Feb 13, 2015
Text intended for grant
May 21, 2014
Amended description with annotations
May 21, 2014
Description
May 21, 2014
Reply to communication from the Examining Division
May 19, 2014
(Electronic) Receipt
May 19, 2014
Amended description with annotations
May 19, 2014
Description
May 19, 2014
Letter accompanying subsequently filed items
May 19, 2014
Reply to communication from the Examining Division
May 12, 2014
Grant of extension of time limit (examination procedure)
May 8, 2014
Request for extension of time limit to communication from the Examining Division
May 7, 2014
Request for extension of time limit to communication from the Examining Division
Jan 9, 2014
Annex to the communication
Jan 9, 2014
Communication from the Examining Division
Dec 13, 2013
Statement of non-availability of priority search results
Dec 5, 2013
Statement of non-availability of priority search results
Oct 18, 2013
Invitation to file a copy of search results(priority)
Aug 28, 2013
Amended claims filed after receipt of (European) search report
Aug 28, 2013
Amended claims with annotations
Aug 28, 2013
Amendments received before examination
Aug 27, 2013
Amended claims filed after receipt of (European) search report
Aug 27, 2013
Amended claims with annotations
Aug 27, 2013
Amendments received before examination
May 3, 2013
Notification on forthcoming publication of bibliographic data
Mar 1, 2013
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Feb 27, 2013
Communication to designated inventor
Feb 27, 2013
Communication to designated inventor
Feb 27, 2013
Communication to designated inventor
Feb 27, 2013
Communication to designated inventor
Feb 27, 2013
Communication to designated inventor
Feb 6, 2013
Copy of the international preliminary report on patentability
Jan 21, 2013
(Electronic) Receipt
Jan 21, 2013
Annex
Jan 21, 2013
Request for entry into the European phase
Dec 12, 2012
Notification of the recording of a change
Dec 12, 2012
Notification of the recording of a change
Nov 30, 2012
Information on entry into European phase
Feb 14, 2012
Priority document (electronically transmitted)
Jan 26, 2012
Copy of the international search report
Jan 26, 2012
Copy of the international search report
Jan 26, 2012
Published international application - A1
Oct 28, 2011
Written opinion of the ISA, boxes No. I to VIII
Oct 28, 2011
Written opinion of the ISA, cover sheet
Oct 28, 2011
Written opinion of the ISA, supplemental box
Jul 20, 2011
Submission concerning representation
Jul 15, 2011
(Electronic) Receipt
Jul 15, 2011
Abstract
Jul 15, 2011
Claims
Jul 15, 2011
Description

EP2596042

BAYER

Application Number: EP11731403A
Filing Date: Jul 15, 2011
Status: Granted And Under Opposition; Apr 9, 2018
Publication Date: May 13, 2015
External Links: Slate, Register , Google Patents

IP Verse

Polyisocyanate Mixtures

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP2596042