Process For Preparing Polyolefin

Patent No. EP2531533 (titled "Process For Preparing Polyolefin") was filed by Totalenergies Onetech Belgium on Feb 3, 2011. The application was issued on Mar 26, 2025.

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
CHEVRON PHILLIPS CHEMICAL LP	May 19, 2022	ABEL & IMRAY

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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Feb 27, 2025
Decision to maintain the European patent in amended form
Feb 27, 2025
Decision to maintain the European patent in amended form
Jun 13, 2024
(Electronic) Receipt
Jun 13, 2024
Filing of the translation of the amended claims
Jun 13, 2024
French translation of claims
Jun 13, 2024
German translation of the claims
Jun 13, 2024
Letter accompanying subsequently filed items
Jun 3, 2024
Communication of bibliographic data
Jun 3, 2024
Communication to opponent concerning maintenance
Jun 3, 2024
Communication with request to file translations
May 28, 2024
Maintenance of the patent with the documents specified in the final decision
Feb 26, 2024
Annex to the communication - opposition
Feb 26, 2024
Brief communication - Opposition proceedings
Feb 26, 2024
Brief communication - Opposition proceedings
Feb 26, 2024
Decision of the Opposition Division and instruction
Feb 26, 2024
Druckexemplar in opposition procedure
Feb 26, 2024
Grounds for the decision (Annex) - opposition
Feb 26, 2024
Interlocutory decision in opposition proceedings
Feb 26, 2024
Interlocutory decision in opposition proceedings
Feb 26, 2024
Means of redress
Feb 26, 2024
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 26, 2024
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 26, 2024
Provision of a copy of the minutes - opposition procedure
Feb 26, 2024
Provision of a copy of the minutes - opposition procedure
Feb 26, 2024
Scanned annex to a communication - opposition procedure
Feb 26, 2024
Scanned annex to a communication - opposition procedure
Jan 30, 2024
Information about the result of oral proceedings
Dec 7, 2023
Brief communication - Opposition proceedings
Dec 6, 2023
Brief communication - Opposition proceedings
Dec 5, 2023
Brief communication - Opposition proceedings
Dec 1, 2023
(Electronic) Receipt
Dec 1, 2023
Letter accompanying subsequently filed items
Dec 1, 2023
Request for interpreters during oral proceedings
Nov 30, 2023
(Electronic) Receipt
Nov 30, 2023
(Electronic) Receipt
Nov 30, 2023
Letter accompanying subsequently filed items
Nov 30, 2023
Letter accompanying subsequently filed items
Nov 30, 2023
Written submission in preparation to/during oral proceedings
Nov 30, 2023
Written submission in preparation to/during oral proceedings
Jan 30, 2023
Advice of delivery
Jan 25, 2023
Advice of delivery
Jan 25, 2023
Annex to the communication - opposition
Jan 25, 2023
Information concerning oral proceedings
Jan 25, 2023
Scanned annex to a communication - opposition procedure
Jan 25, 2023
Summons to attend oral proceedings
Jan 25, 2023
Summons to attend oral proceedings
Jan 25, 2023
Transmittal of decision / summons - opposition
Jan 25, 2023
Transmittal of decision / summons - opposition
Oct 24, 2022
Brief communication - Opposition proceedings
Oct 24, 2022
Communication concerning the filing of a power of attorney
Oct 24, 2022
Communication of amended entries concerning the representative
Oct 17, 2022
Brief communication - Opposition proceedings
Oct 12, 2022
(Electronic) Receipt
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure
Oct 12, 2022
Auxiliary request during Opposition procedure - 01
Oct 12, 2022
Auxiliary request during Opposition procedure - 02
Oct 12, 2022
Auxiliary request during Opposition procedure - 03
Oct 12, 2022
Auxiliary request during Opposition procedure - 04
Oct 12, 2022
Auxiliary request during Opposition procedure - 05
Oct 12, 2022
Auxiliary request during Opposition procedure - 06
Oct 12, 2022
General authorisation
Oct 12, 2022
Letter accompanying subsequently filed items
Oct 12, 2022
Reply of the patent proprietor to the notice(s) of opposition
Oct 6, 2022
Brief communication - Opposition proceedings
Oct 6, 2022
Brief communication - Opposition proceedings
Oct 6, 2022
Communication of the registration of a transfer or change of name and/or address
Oct 3, 2022
(Electronic) Receipt
Oct 3, 2022
Annexes in respect of a client data request
Oct 3, 2022
Annexes in respect of a client data request
Oct 3, 2022
Annexes in respect of a client data request
Oct 3, 2022
Consolidated list of cited opposition documents
Oct 3, 2022
Letter accompanying subsequently filed items
Oct 3, 2022
Submission concerning change of proprietor's name
Jun 13, 2022
Communication of a notice of opposition and request to file observations
Jun 13, 2022
Notice of further oppositions to opponent(s)
May 25, 2022
Communication of a notice of opposition - first information to patent proprietor
May 19, 2022
(Electronic) Receipt
May 19, 2022
Citation in opposition procedure - 001
May 19, 2022
Citation in opposition procedure - 002
May 19, 2022
Citation in opposition procedure - 003
May 19, 2022
Citation in opposition procedure - 004
May 19, 2022
Citation in opposition procedure - 005
May 19, 2022
Citation in opposition procedure - 006
May 19, 2022
Citation in opposition procedure - 007
May 19, 2022
Notice of opposition
May 19, 2022
Notice of opposition
Sep 7, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 29, 2021
Decision to grant a European patent
Jul 16, 2021
(Electronic) Receipt
Jul 16, 2021
Filing of the translations of the claims
Jul 16, 2021
French translation of claims
Jul 16, 2021
German translation of the claims
Jul 16, 2021
Letter accompanying subsequently filed items
Mar 30, 2021
Bibliographic data of the European patent application
Mar 30, 2021
Communication about intention to grant a European patent
Mar 30, 2021
Intention to grant (signatures)
Mar 30, 2021
Text intended for grant (clean copy)
Mar 30, 2021
Text intended for grant (version for approval)
Feb 26, 2021
(Electronic) Receipt
Feb 26, 2021
Letter concerning fees and payments
Aug 7, 2018
(Electronic) Receipt
Aug 7, 2018
Letter accompanying subsequently filed items
Aug 7, 2018
Reply to communication from the Examining Division
May 25, 2018
Grant of extension of time limit (examination procedure)
May 18, 2018
(Electronic) Receipt
May 18, 2018
Letter accompanying subsequently filed items
May 18, 2018
Request for extension of time limit to communication from the Examining Division
Jan 31, 2018
Annex to the communication
Jan 31, 2018
Communication from the Examining Division
Sep 22, 2017
(Electronic) Receipt
Sep 22, 2017
Amended claims with annotations
Sep 22, 2017
Claims
Sep 22, 2017
Letter accompanying subsequently filed items
Sep 22, 2017
Reply to communication from the Examining Division
May 15, 2017
Annex to the communication
May 15, 2017
Communication from the Examining Division
Jan 5, 2016
(Electronic) Receipt
Jan 5, 2016
Amended claims with annotations
Jan 5, 2016
Claims
Jan 5, 2016
Letter accompanying subsequently filed items
Jan 5, 2016
Reply to communication from the Examining Division
Dec 22, 2015
Submission concerning change of applicant's representative
Dec 22, 2015
Submission concerning change of applicant's representative
Dec 21, 2015
Communication of amended entries concerning the representative
Dec 15, 2015
Submission concerning change of applicant's representative
Dec 15, 2015
Submission concerning change of applicant's representative
Sep 4, 2015
Communication of amended entries concerning the representative
Aug 31, 2015
Annex to the communication
Aug 31, 2015
Communication from the Examining Division
Aug 21, 2015
Submission concerning change of applicant's representative
Aug 21, 2015
Submission concerning change of applicant's representative
Aug 19, 2015
Submission concerning change of applicant's representative
Aug 20, 2014
(Electronic) Receipt
Aug 20, 2014
Description
Aug 20, 2014
Letter accompanying subsequently filed items
Aug 20, 2014
Reply to communication from the Examining Division
Jul 2, 2014
Annex to the communication
Jul 2, 2014
Communication from the Examining Division
Feb 15, 2014
Submission concerning change of applicant's representative
Feb 13, 2014
Communication of amended entries concerning the representative
Feb 10, 2014
Submission concerning change of applicant's representative
Jan 30, 2014
(Electronic) Receipt
Jan 30, 2014
Amended claims with annotations
Jan 30, 2014
Claims
Jan 30, 2014
Letter accompanying subsequently filed items
Jan 30, 2014
Reply to communication from the Examining Division
Dec 2, 2013
Grant of extension of time limit (examination procedure)
Nov 26, 2013
(Electronic) Receipt
Nov 26, 2013
Letter accompanying subsequently filed items
Nov 26, 2013
Request for extension of time limit to communication from the Examining Division
Jul 26, 2013
Annex to the communication
Jul 26, 2013
Communication from the Examining Division
Jul 12, 2013
Examination started
Apr 2, 2013
(Electronic) Receipt
Apr 2, 2013
Letter accompanying subsequently filed items
Apr 2, 2013
Reply to Written Opinion prepared by the EPO
Nov 14, 2012
Notification on forthcoming publication of bibliographic data
Oct 15, 2012
Communication to designated inventor
Oct 9, 2012
(Electronic) Receipt
Oct 9, 2012
Letter accompanying subsequently filed items
Oct 9, 2012
Letter concerning the inventor
Oct 4, 2012
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Oct 4, 2012
Invitation to indicate correct address of inventor
Sep 27, 2012
Letter which had not been notified
Sep 26, 2012
Priority search results copy provided by EPO
Sep 26, 2012
Priority search results copy provided by EPO
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 14, 2012
Communication to designated inventor
Sep 4, 2012
(Electronic) Receipt
Sep 4, 2012
Request for entry into the European phase
Aug 28, 2012
Notification of the recording of a change
Aug 28, 2012
Notification of the recording of a change
Aug 21, 2012
Copy of the international preliminary report on patentability
Jul 23, 2012
Submission concerning change of applicant's name
Jun 15, 2012
Information on entry into European phase
Aug 29, 2011
Priority document (electronically transmitted)
Aug 29, 2011
Priority document (electronically transmitted)
Aug 11, 2011
Copy of the international search report
Aug 11, 2011
Published international application - A1
May 6, 2011
Written opinion of the ISA, boxes No. I to VIII
May 6, 2011
Written opinion of the ISA, cover sheet
May 6, 2011
Written opinion of the ISA, supplemental box
Apr 28, 2011
Notification of the recording of a change
Apr 28, 2011
Notification of the recording of a change
Apr 28, 2011
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
Apr 28, 2011
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
Feb 3, 2011
(Electronic) Receipt
Feb 3, 2011
Abstract
Feb 3, 2011
Claims
Feb 3, 2011
Description
Feb 3, 2011
Drawings
Feb 3, 2011
Priority document (RO-procedure)
Feb 3, 2011
Priority document (RO-procedure)

EP2531533

TOTALENERGIES ONETECH BELGIUM

Application Number: EP11702193A
Filing Date: Feb 3, 2011
Status: Patent Maintained As Amended; Feb 21, 2025
Publication Date: Mar 26, 2025
External Links: Slate, Register , Google Patents

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Process For Preparing Polyolefin

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Dossier Documents

EP2531533