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Pentamethylene Diisocyanate, Method For Producing Pentamethylene Diisocyanate, Polyisocyanate Composition, Polyurethane Resin, And Polyurea Resin

Patent No. EP2684867 (titled "Pentamethylene Diisocyanate, Method For Producing Pentamethylene Diisocyanate, Polyisocyanate Composition, Polyurethane Resin, And Polyurea Resin") was filed by Mitsui Chemicals on Mar 7, 2012. The application was issued on Jan 2, 2019.

Patent Summary

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Patent Oppositions

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
COVESTRO DEUTSCHLAND	Oct 2, 2019	DAVEPON

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 7, 2020
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jul 7, 2020
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Jul 2, 2020
Termination of the opposition proceedings with revocation of patent
Mar 9, 2020
Advice of delivery
Mar 6, 2020
Advice of delivery
Mar 5, 2020
Acknowledgement of a document
Mar 5, 2020
Acknowledgement of a document
Mar 5, 2020
Decision revoking the European patent
Mar 5, 2020
Decision revoking the European patent
Feb 24, 2020
Request for revocation of patent
Nov 4, 2019
Brief communication - Opposition proceedings
Oct 25, 2019
Letter regarding the opposition procedure (no time limit)
Oct 15, 2019
Communication of a notice of opposition and request to file observations
Oct 15, 2019
Notice of further oppositions to opponent(s)
Oct 11, 2019
Communication of a notice of opposition - first information to patent proprietor
Oct 2, 2019
(Electronic) Receipt
Oct 2, 2019
Any annexes (other than citation) to an opposition letter
Oct 2, 2019
Any annexes (other than citation) to an opposition letter
Oct 2, 2019
Any annexes (other than citation) to an opposition letter
Oct 2, 2019
Any annexes (other than citation) to an opposition letter
Oct 2, 2019
Any annexes (other than citation) to an opposition letter
Oct 2, 2019
Citation in opposition procedure - 001
Oct 2, 2019
Citation in opposition procedure - 001
Oct 2, 2019
Citation in opposition procedure - 002
Oct 2, 2019
Citation in opposition procedure - 003
Oct 2, 2019
Citation in opposition procedure - 003
Oct 2, 2019
Citation in opposition procedure - 003
Oct 2, 2019
Citation in opposition procedure - 003
Oct 2, 2019
Citation in opposition procedure - 004
Oct 2, 2019
Citation in opposition procedure - 005
Oct 2, 2019
Citation in opposition procedure - 005
Oct 2, 2019
Citation in opposition procedure - 006
Oct 2, 2019
Citation in opposition procedure - 007
Oct 2, 2019
Citation in opposition procedure - 008
Oct 2, 2019
Citation in opposition procedure - 009
Oct 2, 2019
Citation in opposition procedure - 010
Oct 2, 2019
Citation in opposition procedure - 011
Oct 2, 2019
Citation in opposition procedure - 012
Oct 2, 2019
Citation in opposition procedure - 013
Oct 2, 2019
Consolidated list of cited opposition documents
Oct 2, 2019
Notice of opposition
Oct 2, 2019
Notice of opposition
Jan 14, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 6, 2018
Decision to grant a European patent
Nov 23, 2018
(Electronic) Receipt
Nov 23, 2018
Filing of the translations of the claims
Nov 23, 2018
French translation of claims
Nov 23, 2018
German translation of the claims
Nov 23, 2018
Letter accompanying subsequently filed items
Aug 1, 2018
Annex to the communication about intention to grant a European patent
Aug 1, 2018
Bibliographic data of the European patent application
Aug 1, 2018
Communication about intention to grant a European patent
Aug 1, 2018
Intention to grant (signatures)
Aug 1, 2018
Text intended for grant (clean copy)
Aug 1, 2018
Text intended for grant (sequence listing)
Aug 1, 2018
Text intended for grant (version for approval)
Jun 14, 2018
Acknowledgement of receipt of third party observations
Jun 14, 2018
Transmittal of third party observations to applicant
Jun 7, 2018
(Electronic) Receipt
Jun 7, 2018
Citation filed by a third party
Jun 7, 2018
Letter accompanying subsequently filed items
Jun 7, 2018
Observations by third parties
Apr 18, 2018
Amended claims with annotations
Apr 18, 2018
Claims
Apr 18, 2018
Reply to communication from the Examining Division
Jan 15, 2018
Annex to the communication
Jan 15, 2018
Communication from the Examining Division
Dec 7, 2017
Reply to communication to third party
Dec 1, 2017
Acknowledgement of receipt of third party observations
Dec 1, 2017
Transmittal of third party observations to applicant
Nov 27, 2017
(Electronic) Receipt
Nov 27, 2017
Letter accompanying subsequently filed items
Nov 27, 2017
Non-patent literature filed by a third party
Nov 27, 2017
Observations by third parties
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Non-patent literature cited during the examination procedure
Oct 4, 2017
Reply to communication from the Examining Division
Jul 14, 2017
Grant of extension of time limit (examination procedure)
Jul 6, 2017
Request for extension of time limit to communication from the Examining Division
Mar 27, 2017
Annex to the communication
Mar 27, 2017
Communication from the Examining Division
Jan 9, 2017
Acknowledgement of receipt of third party observations
Jan 9, 2017
Transmittal of third party observations to applicant
Dec 22, 2016
(Electronic) Receipt
Dec 22, 2016
Letter accompanying subsequently filed items
Dec 22, 2016
Non-patent literature filed by a third party
Dec 22, 2016
Observations by third parties
Sep 1, 2016
Non-patent literature cited during the examination procedure
Sep 1, 2016
Reply to communication from the Examining Division
May 13, 2016
Annex to the communication
May 13, 2016
Communication from the Examining Division
May 9, 2016
Examination started
Mar 23, 2015
Reply to Written Opinion prepared by the EPO
Sep 26, 2014
Submission concerning representation
Sep 11, 2014
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Aug 25, 2014
Communication regarding the transmission of the European search report
Aug 25, 2014
European search opinion
Aug 25, 2014
Supplementary European search report
Aug 7, 2014
Search started
Dec 18, 2013
Notification of forthcoming publication
Oct 16, 2013
Communication regarding possible amendment of the application/payment of claims fee
Oct 14, 2013
Communication to designated inventor
Oct 14, 2013
Communication to designated inventor
Oct 14, 2013
Communication to designated inventor
Oct 14, 2013
Communication to designated inventor
Sep 24, 2013
Copy of the international preliminary report on patentability
Sep 24, 2013
Translation of the international preliminary report on patentability
Sep 3, 2013
The request for correction will be decided by the Examining Division
Aug 9, 2013
(Electronic) Receipt
Aug 9, 2013
Abstract
Aug 9, 2013
Amended description filed after receipt of (European) search report
Aug 9, 2013
Amendments received before examination
Aug 9, 2013
Claims
Aug 9, 2013
Converted Sequence Listing
Aug 9, 2013
Description
Aug 9, 2013
Drawings
Aug 9, 2013
Request for entry into the European phase
Jul 17, 2013
Information on entry into European phase
Oct 2, 2012
Priority document (electronically transmitted)
Sep 13, 2012
Converted Sequence Listing
Sep 13, 2012
Copy of the international search report
Sep 13, 2012
Copy of the translated international search report
Sep 13, 2012
International publication pamphlet

EP2684867

MITSUI CHEMICALS

Application Number: EP12754970A
Filing Date: Mar 7, 2012
Status: Revoked; Jul 3, 2020
Publication Date: Jan 2, 2019
External Links: Slate, Register , Google Patents