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Antitumor T Cell Response Enhancer

Patent No. EP2578231 (titled "Antitumor T Cell Response Enhancer") was filed by Chugai Seiyaku Kabushiki Kaisha on May 27, 2011. The application was issued on Oct 26, 2022.

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
GEDEON RICHTER PHARMA	Jul 25, 2023	MAIWALD

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 17, 2025
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Feb 17, 2025
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Nov 13, 2024
Decision revoking the European patent
Nov 13, 2024
Decision revoking the European patent
Nov 11, 2024
(Electronic) Receipt
Nov 11, 2024
Letter accompanying subsequently filed items
Nov 11, 2024
Request for revocation of patent
Oct 1, 2024
Brief communication - Opposition proceedings
Sep 30, 2024
Brief communication - Opposition proceedings
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
(Electronic) Receipt
Sep 25, 2024
Citation in opposition procedure - 026
Sep 25, 2024
Citation in opposition procedure - 027
Sep 25, 2024
Citation in opposition procedure - 028
Sep 25, 2024
Citation in opposition procedure - 029
Sep 25, 2024
Consolidated list of cited opposition documents
Sep 25, 2024
Letter accompanying subsequently filed items
Sep 25, 2024
Letter accompanying subsequently filed items
Sep 25, 2024
Letter accompanying subsequently filed items
Sep 25, 2024
Request for interpreters during oral proceedings
Sep 25, 2024
Request for interpreters during oral proceedings
Sep 25, 2024
Written submission in preparation to/during oral proceedings
Sep 25, 2024
Written submission in preparation to/during oral proceedings
May 7, 2024
Annex to the communication - opposition
May 7, 2024
Brief communication - Opposition proceedings
May 7, 2024
Brief communication - Opposition proceedings
May 7, 2024
Information concerning oral proceedings
May 7, 2024
Summons to attend oral proceedings
May 7, 2024
Summons to attend oral proceedings
Apr 30, 2024
Notification concerning the date of oral proceedings
Apr 30, 2024
Notification concerning the date of oral proceedings
Apr 24, 2024
Brief communication - Opposition proceedings
Apr 19, 2024
(Electronic) Receipt
Apr 19, 2024
Any annexes (other than citation) to an opposition letter
Apr 19, 2024
Any annexes (other than citation) to an opposition letter
Apr 19, 2024
Letter accompanying subsequently filed items
Apr 19, 2024
Oral proceedings: Request for postponement
Apr 16, 2024
Annex to the communication - opposition
Apr 16, 2024
Brief communication - Opposition proceedings
Apr 16, 2024
Brief communication - Opposition proceedings
Apr 16, 2024
Information concerning oral proceedings
Apr 16, 2024
Scanned annex to a communication - opposition procedure
Apr 16, 2024
Summons to attend oral proceedings
Apr 16, 2024
Summons to attend oral proceedings
Feb 14, 2024
Brief communication - Opposition proceedings
Feb 8, 2024
(Electronic) Receipt
Feb 8, 2024
Citation in opposition procedure - 022
Feb 8, 2024
Citation in opposition procedure - 023
Feb 8, 2024
Citation in opposition procedure - 024
Feb 8, 2024
Citation in opposition procedure - 025
Feb 8, 2024
Letter accompanying subsequently filed items
Feb 8, 2024
Reply from the opponent to submission of proprietor
Dec 21, 2023
Brief communication - Opposition proceedings
Dec 18, 2023
(Electronic) Receipt
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure
Dec 18, 2023
Auxiliary request during Opposition procedure - 01
Dec 18, 2023
Auxiliary request during Opposition procedure - 02
Dec 18, 2023
Auxiliary request during Opposition procedure - 03
Dec 18, 2023
Auxiliary request during Opposition procedure - 04
Dec 18, 2023
Auxiliary request during Opposition procedure - 05
Dec 18, 2023
Auxiliary request during Opposition procedure - 06
Dec 18, 2023
Auxiliary request during Opposition procedure - 07
Dec 18, 2023
Auxiliary request during Opposition procedure - 08
Dec 18, 2023
Citation in opposition procedure - 019
Dec 18, 2023
Citation in opposition procedure - 020
Dec 18, 2023
Citation in opposition procedure - 021
Dec 18, 2023
Letter accompanying subsequently filed items
Dec 18, 2023
Reply of the patent proprietor to the notice(s) of opposition
Dec 5, 2023
Communication of amended entries concerning the representative
Nov 24, 2023
Annexes in respect of a client data request
Nov 24, 2023
Letter accompanying subsequently filed items
Nov 24, 2023
Submission concerning change of applicant's representative
Aug 9, 2023
Communication of a notice of opposition and request to file observations
Aug 9, 2023
Notice of further oppositions to opponent(s)
Jul 28, 2023
Communication of a notice of opposition - first information to patent proprietor
Jul 25, 2023
(Electronic) Receipt
Jul 25, 2023
Citation in opposition procedure - 001
Jul 25, 2023
Citation in opposition procedure - 002
Jul 25, 2023
Citation in opposition procedure - 003
Jul 25, 2023
Citation in opposition procedure - 004
Jul 25, 2023
Citation in opposition procedure - 005
Jul 25, 2023
Citation in opposition procedure - 006
Jul 25, 2023
Citation in opposition procedure - 007
Jul 25, 2023
Citation in opposition procedure - 008
Jul 25, 2023
Citation in opposition procedure - 009
Jul 25, 2023
Citation in opposition procedure - 010
Jul 25, 2023
Citation in opposition procedure - 011
Jul 25, 2023
Citation in opposition procedure - 011
Jul 25, 2023
Citation in opposition procedure - 012
Jul 25, 2023
Citation in opposition procedure - 012
Jul 25, 2023
Citation in opposition procedure - 013
Jul 25, 2023
Citation in opposition procedure - 014
Jul 25, 2023
Citation in opposition procedure - 015
Jul 25, 2023
Citation in opposition procedure - 015
Jul 25, 2023
Citation in opposition procedure - 016
Jul 25, 2023
Citation in opposition procedure - 017
Jul 25, 2023
Citation in opposition procedure - 018
Jul 25, 2023
Notice of opposition
Jul 25, 2023
Notice of opposition
Nov 30, 2022
Document concerning representation
Nov 8, 2022
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 29, 2022
Decision to grant a European patent
Sep 20, 2022
(Electronic) Receipt
Sep 20, 2022
Filing of the translations of the claims
Sep 20, 2022
French translation of claims
Sep 20, 2022
German translation of the claims
Jun 2, 2022
Bibliographic data of the European patent application
Jun 2, 2022
Communication about intention to grant a European patent
Jun 2, 2022
Intention to grant (signatures)
Jun 2, 2022
Text intended for grant (clean copy)
Jun 2, 2022
Text intended for grant (version for approval)
Feb 15, 2022
Communication of amended entries concerning the representative
Feb 9, 2022
Letter accompanying subsequently filed items
Feb 9, 2022
Submission concerning change of applicant's representative
Jan 4, 2022
(Electronic) Receipt
Jan 4, 2022
Amended description with annotations
Jan 4, 2022
Description
Jan 4, 2022
Letter accompanying subsequently filed items
Jan 4, 2022
Reply to communication from the Examining Division
Dec 2, 2021
Grant of extension of time limit (examination procedure)
Nov 26, 2021
(Electronic) Receipt
Nov 26, 2021
Letter accompanying subsequently filed items
Nov 26, 2021
Request for extension of time limit to communication from the Examining Division
Nov 17, 2021
Annex to the communication
Nov 17, 2021
Consultation by telephone/in person
Nov 17, 2021
Result of consultation by telephone/in person
Oct 28, 2021
Communication of amended entries concerning the representative
Oct 14, 2021
Annexes in respect of a client data request
Oct 14, 2021
Annexes in respect of a client data request
Oct 14, 2021
Letter accompanying subsequently filed items
Oct 14, 2021
Submission concerning change of applicant's representative
Aug 18, 2021
Annex to the communication
Aug 18, 2021
Communication from the Examining Division
Aug 5, 2021
(Electronic) Receipt
Aug 5, 2021
Amended description with annotations
Aug 5, 2021
Description
Aug 5, 2021
Letter accompanying subsequently filed items
Aug 5, 2021
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jun 4, 2021
Communication of amended entries concerning the representative
May 28, 2021
Annexes in respect of a client data request
May 28, 2021
Letter accompanying subsequently filed items
May 28, 2021
Submission concerning change of applicant's representative
Mar 26, 2021
Bibliographic data of the European patent application
Mar 26, 2021
Communication about intention to grant a European patent
Mar 26, 2021
Intention to grant (signatures)
Mar 26, 2021
Text intended for grant (clean copy)
Mar 26, 2021
Text intended for grant (version for approval)
May 28, 2020
(Electronic) Receipt
May 28, 2020
Amended claims with annotations
May 28, 2020
Claims
May 28, 2020
Letter accompanying subsequently filed items
May 28, 2020
Non-patent literature cited during the examination procedure
May 28, 2020
Reply to communication from the Examining Division
Jan 29, 2020
Grant of extension of time limit (examination procedure)
Jan 24, 2020
(Electronic) Receipt
Jan 24, 2020
Letter accompanying subsequently filed items
Jan 24, 2020
Request for extension of time limit to communication from the Examining Division
Sep 16, 2019
Annex to the communication
Sep 16, 2019
Communication from the Examining Division
May 15, 2019
(Electronic) Receipt
May 15, 2019
Amended claims with annotations
May 15, 2019
Claims
May 15, 2019
Letter accompanying subsequently filed items
May 15, 2019
Reply to communication from the Examining Division
May 13, 2019
Grant of extension of time limit (examination procedure)
Apr 18, 2019
(Electronic) Receipt
Apr 18, 2019
Letter accompanying subsequently filed items
Apr 18, 2019
Request for extension of time limit to communication from the Examining Division
Feb 22, 2019
Grant of extension of time limit (examination procedure)
Feb 19, 2019
(Electronic) Receipt
Feb 19, 2019
Letter accompanying subsequently filed items
Feb 19, 2019
Request for extension of time limit to communication from the Examining Division
Dec 28, 2018
Submission concerning representation
Dec 21, 2018
Submission concerning representation
Oct 10, 2018
Annex to the communication
Oct 10, 2018
Communication from the Examining Division
Oct 9, 2018
Response to enquiry for communication from the Examining Division
Sep 25, 2018
(Electronic) Receipt
Sep 25, 2018
Enquiry as to the processing of the file
Sep 25, 2018
Letter accompanying subsequently filed items
Mar 2, 2017
Amended claims with annotations
Mar 2, 2017
Claims
Mar 2, 2017
Reply to communication from the Examining Division
Jan 2, 2017
Grant of extension of time limit (examination procedure)
Dec 14, 2016
Request for extension of time limit to communication from the Examining Division
Sep 5, 2016
Annex to the communication
Sep 5, 2016
Communication from the Examining Division
Feb 5, 2016
Amended claims with annotations
Feb 5, 2016
Claims
Feb 5, 2016
Reply to communication from the Examining Division
Dec 16, 2015
Grant of extension of time limit (examination procedure)
Dec 9, 2015
Request for extension of time limit to communication from the Examining Division
Jul 31, 2015
Annex to the communication
Jul 31, 2015
Communication from the Examining Division
Jan 12, 2015
Amended claims with annotations
Jan 12, 2015
Claims
Jan 12, 2015
Description
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Non-patent literature cited during the examination procedure
Jan 12, 2015
Reply to communication from the Examining Division
Nov 18, 2014
Grant of extension of time limit (examination procedure)
Nov 11, 2014
Request for extension of time limit to communication from the Examining Division
Jul 2, 2014
Annex to the communication
Jul 2, 2014
Communication from the Examining Division
Apr 28, 2014
(Electronic) Receipt
Apr 28, 2014
Amended claims filed after receipt of (European) search report
Apr 28, 2014
Amended claims with annotations
Apr 28, 2014
Amendments received before examination
Apr 28, 2014
Letter accompanying subsequently filed items
Apr 28, 2014
Letter concerning the priority
Apr 28, 2014
Translation of priority document
Oct 18, 2013
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 18, 2013
Invitation to file a translation of the previous application
Oct 2, 2013
Communication regarding the transmission of the European search report
Oct 2, 2013
European search opinion
Oct 2, 2013
Supplementary European search report
Sep 5, 2013
Search started
Jul 15, 2013
Amended claims filed after receipt of (European) search report
Jul 15, 2013
Amended claims with annotations
Jul 15, 2013
Amendments received before examination
Mar 13, 2013
Notification of forthcoming publication
Feb 4, 2013
Communication to designated inventor
Jan 29, 2013
Letter concerning the inventor
Jan 28, 2013
Letter concerning the inventor
Jan 22, 2013
Translation of the international preliminary report on patentability
Jan 15, 2013
Deficiencies in designation of inventor
Jan 8, 2013
Communication regarding possible amendment of the application/payment of claims fee
Jan 2, 2013
Copy of the international preliminary report on patentability
Dec 6, 2012
(Electronic) Receipt
Dec 6, 2012
Abstract
Dec 6, 2012
Claims
Dec 6, 2012
Description
Dec 6, 2012
Drawings
Dec 6, 2012
Request for entry into the European phase
Oct 8, 2012
Information on entry into European phase
Dec 27, 2011
Priority document (electronically transmitted)
Dec 1, 2011
Copy of the international search report
Dec 1, 2011
Copy of the translated international search report
Dec 1, 2011
International publication pamphlet

EP2578231

CHUGAI SEIYAKU KABUSHIKI KAISHA

Application Number: EP11786748A
Filing Date: May 27, 2011
Status: Revoked; Feb 14, 2025
Publication Date: Oct 26, 2022
External Links: Slate, Register, Google Patents

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Antitumor T Cell Response Enhancer

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Dossier Documents

EP2578231