Biaxially Oriented Porous Membranes, Composites, And Methods Of Manufacture And Use

Patent No. EP2544841 (titled "Biaxially Oriented Porous Membranes, Composites, And Methods Of Manufacture And Use") was filed by Celgard on Mar 11, 2011. The application was issued on Jul 7, 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
TREOFAN GERMANY	Oct 16, 2018	MAI BESIER

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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Jun 10, 2021
Decision to maintain the European patent in amended form
Jun 7, 2021
Termination of the opposition proceedings with maintenance of patent
May 25, 2021
(Electronic) Receipt
May 25, 2021
Filing of the translation of the amended claims
May 25, 2021
French translation of claims
May 25, 2021
German translation of the claims
May 25, 2021
Letter accompanying subsequently filed items
Apr 6, 2021
Communication of bibliographic data
Apr 6, 2021
Communication with request to file translations
Mar 30, 2021
Maintenance of the patent with the documents specified in the final decision
Dec 11, 2020
(Electronic) Receipt
Dec 11, 2020
Advice of delivery
Dec 11, 2020
Letter accompanying subsequently filed items
Dec 8, 2020
Annex to the communication - opposition
Dec 8, 2020
Druckexemplar in opposition procedure
Dec 8, 2020
Grounds for the decision (Annex) - opposition
Dec 8, 2020
Interlocutory decision in opposition proceedings
Dec 8, 2020
Internal form - Opposition/addressees
Dec 8, 2020
Internal form - Opposition/addressees
Dec 8, 2020
Means of redress
Dec 8, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 8, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 8, 2020
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 8, 2020
Provision of a copy of the minutes - opposition procedure
Dec 8, 2020
Scanned annex to a communication - opposition procedure
Dec 8, 2020
Transmittal of decision / summons - opposition
Oct 6, 2020
Information about the result of oral proceedings
Sep 23, 2020
(Electronic) Receipt
Sep 23, 2020
Letter accompanying subsequently filed items
Sep 23, 2020
Written submission in preparation to/during oral proceedings
Sep 1, 2020
Request concerning representative opponent
Aug 14, 2020
Communication for party to proceedings/third party
Aug 5, 2020
(Electronic) Receipt
Aug 5, 2020
Auxiliary request during Opposition procedure - 01
Aug 5, 2020
Auxiliary request during Opposition procedure - 02
Aug 5, 2020
Letter accompanying subsequently filed items
Aug 5, 2020
Main request during Opposition procedure
Aug 5, 2020
Written submission in preparation to/during oral proceedings
Jul 13, 2020
Notification concerning the date of oral proceedings
Oct 31, 2019
Notification concerning the date of oral proceedings
Oct 25, 2019
Brief communication - Opposition proceedings
Oct 25, 2019
Brief communication - Opposition proceedings
Oct 23, 2019
Withdrawal of an opposition
Oct 21, 2019
Withdrawal of an opposition
Sep 4, 2019
(Electronic) Receipt
Sep 4, 2019
Advice of delivery
Sep 4, 2019
Letter accompanying subsequently filed items
Aug 30, 2019
Advice of delivery
Aug 29, 2019
Advice of delivery
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
Jun 13, 2019
Brief communication - Opposition proceedings
Jun 5, 2019
Withdrawal of a request for oral proceedings
Mar 14, 2019
Brief communication - Opposition proceedings
Mar 8, 2019
(Electronic) Receipt
Mar 8, 2019
Auxiliary request during Opposition procedure
Mar 8, 2019
Letter accompanying subsequently filed items
Mar 8, 2019
Reply of the patent proprietor to the notice(s) of opposition
Oct 29, 2018
Communication of a notice of opposition and request to file observations
Oct 29, 2018
Notice of further oppositions to opponent(s)
Oct 24, 2018
Communication of a notice of opposition - first information to patent proprietor
Oct 19, 2018
Non-patent literature cited during the opposition procedure
Oct 19, 2018
Non-patent literature cited during the opposition procedure
Oct 19, 2018
Notice of opposition
Oct 19, 2018
Notice of opposition
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 19, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Non-patent literature cited during the opposition procedure
Oct 16, 2018
Notice of opposition
Oct 16, 2018
Notice of opposition
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Oct 16, 2018
Patent document cited during the opposition procedure
Feb 2, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 21, 2017
Decision to grant a European patent
Dec 13, 2017
Bibliographic data of the European patent application
Dec 13, 2017
Information about intention to grant a patent
Dec 13, 2017
Intention to grant (signatures)
Dec 13, 2017
Text intended for grant (clean copy)
Dec 13, 2017
Text intended for grant (version for approval)
Dec 12, 2017
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Nov 30, 2017
(Electronic) Receipt
Nov 30, 2017
Amended claims with annotations
Nov 30, 2017
Claims
Nov 30, 2017
French translation of claims
Nov 30, 2017
German translation of the claims
Nov 30, 2017
Letter accompanying subsequently filed items
Nov 30, 2017
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Aug 17, 2017
Bibliographic data of the European patent application
Aug 17, 2017
Communication about intention to grant a European patent
Aug 17, 2017
Intention to grant (signatures)
Aug 17, 2017
Text intended for grant (clean copy)
Aug 17, 2017
Text intended for grant (version for approval)
Mar 22, 2017
(Electronic) Receipt
Mar 22, 2017
Amended claims with annotations
Mar 22, 2017
Claims
Mar 22, 2017
Letter accompanying subsequently filed items
Mar 22, 2017
Reply to communication from the Examining Division
Nov 22, 2016
Annex to the communication
Nov 22, 2016
Communication from the Examining Division
Oct 26, 2016
(Electronic) Receipt
Oct 26, 2016
Amended description with annotations
Oct 26, 2016
Description
Oct 26, 2016
Letter accompanying subsequently filed items
Oct 26, 2016
Reply to communication from the Examining Division
Jul 1, 2016
Annex to the communication
Jul 1, 2016
Communication from the Examining Division
Jun 23, 2016
Communication of amended entries concerning the representative
Jun 17, 2016
Submission concerning change of applicant's representative
May 13, 2016
Examination started
Jan 26, 2016
(Electronic) Receipt
Jan 26, 2016
Amended claims filed after receipt of (European) search report
Jan 26, 2016
Amended claims with annotations
Jan 26, 2016
Amendments received before examination
Jan 26, 2016
Letter accompanying subsequently filed items
Aug 18, 2015
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jul 31, 2015
Communication regarding the transmission of the European search report
Jul 31, 2015
European search opinion
Jul 31, 2015
Supplementary European search report
Jul 22, 2015
Search started
Dec 19, 2012
Notification on forthcoming publication of bibliographic data
Oct 19, 2012
Communication regarding possible amendment of the application/payment of claims fee
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 17, 2012
Communication to designated inventor
Oct 16, 2012
Copy of the international preliminary examination report
Oct 4, 2012
(Electronic) Receipt
Oct 4, 2012
Amended claims filed after receipt of (European) search report
Oct 4, 2012
Amended description filed after receipt of (European) search report
Oct 4, 2012
Amendments received before examination
Oct 4, 2012
Request for entry into the European phase
Jul 20, 2012
Information on entry into European phase
Oct 6, 2011
Priority document (electronically transmitted)
Oct 6, 2011
Priority document (electronically transmitted)
Sep 19, 2011
Notification of election of EPO
Sep 15, 2011
Copy of the international search report
Sep 15, 2011
Published international application - A1

EP2544841

CELGARD

Application Number: EP11754128A
Filing Date: Mar 11, 2011
Status: Patent Maintained As Amended; Jun 12, 2021
Publication Date: Jul 7, 2021
External Links: Slate, Register , Google Patents

IP Verse

Biaxially Oriented Porous Membranes, Composites, And Methods Of Manufacture And Use

Patent Summary

Patent Family

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Dossier Documents

EP2544841