The patent EP2679681 was granted to Chugai Seiyaku Kabushiki Kaisha on Nov 15, 2023. The application was originally filed on Feb 24, 2012 under application number EP12749420A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
Get a free citation report including examiner, opposition, and international search citations.
Get Citation ReportThe 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
Get instant alerts for new documents
Oct 19, 2023
Oct 19, 2023
Oct 13, 2023
Oct 9, 2023
Oct 9, 2023
Oct 9, 2023
Oct 9, 2023
Oct 9, 2023
Jul 18, 2023
Jun 28, 2023
Jun 28, 2023
Jun 28, 2023
Jun 23, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Means of redress
OPPO
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Jan 26, 2022
Jan 21, 2022
Jan 21, 2022
Description
OPPO
Jan 21, 2022
Jan 21, 2022
Jan 19, 2022
Dec 8, 2021
Nov 26, 2021
Nov 24, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 15, 2021
Nov 10, 2021
Nov 10, 2021
Jan 28, 2021
Jan 28, 2021
Jan 28, 2021
Jan 27, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Nov 4, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Jun 17, 2020
Jun 17, 2020
May 13, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
May 6, 2020
Aug 19, 2019
Jul 11, 2019
Decision to grant a European patent
Search/Exam
Jul 4, 2019
Jun 26, 2019
(Electronic) Receipt
Search/Exam
Jun 26, 2019
Filing of the translations of the claims
Search/Exam
Jun 26, 2019
French translation of claims
Search/Exam
Jun 26, 2019
German translation of the claims
Search/Exam
Jun 26, 2019
Letter accompanying subsequently filed items
Search/Exam
May 13, 2019
May 13, 2019
May 13, 2019
Intention to grant (signatures)
Search/Exam
May 13, 2019
Text intended for grant (clean copy)
Search/Exam
May 13, 2019
Text intended for grant (sequence listing)
Search/Exam
May 13, 2019
Apr 25, 2019
Amended description with annotations
Search/Exam
Apr 25, 2019
Description
Search/Exam
Apr 25, 2019
Mar 13, 2019
Mar 13, 2019
Mar 13, 2019
Intention to grant (signatures)
Search/Exam
Mar 13, 2019
Text intended for grant (clean copy)
Search/Exam
Mar 13, 2019
Text intended for grant (sequence listing)
Search/Exam
Mar 13, 2019
Feb 21, 2019
Amended claims with annotations
Search/Exam
Feb 21, 2019
Amended description with annotations
Search/Exam
Feb 21, 2019
Claims
Search/Exam
Feb 21, 2019
Description
Search/Exam
Feb 21, 2019
Oct 11, 2018
Oct 11, 2018
Oct 11, 2018
Intention to grant (signatures)
Search/Exam
Oct 11, 2018
Text intended for grant (clean copy)
Search/Exam
Oct 11, 2018
Text intended for grant (sequence listing)
Search/Exam
Oct 11, 2018
Sep 11, 2018
Amended description with annotations
Search/Exam
Sep 11, 2018
Description
Search/Exam
Sep 11, 2018
May 14, 2018
May 14, 2018
May 14, 2018
Intention to grant (signatures)
Search/Exam
May 14, 2018
Text intended for grant (clean copy)
Search/Exam
May 14, 2018
Text intended for grant (sequence listing)
Search/Exam
May 14, 2018
Mar 13, 2018
Amended description with annotations
Search/Exam
Mar 13, 2018
Description
Search/Exam
Mar 13, 2018
Jan 24, 2018
Jan 10, 2018
Nov 3, 2017
Annex to the communication
Search/Exam
Nov 3, 2017
Communication from the Examining Division
Search/Exam
Oct 13, 2017
Amended claims with annotations
Search/Exam
Oct 13, 2017
Claims
Search/Exam
Oct 13, 2017
Aug 25, 2017
Aug 14, 2017
Apr 6, 2017
Annex to the communication
Search/Exam
Apr 6, 2017
Communication from the Examining Division
Search/Exam
Mar 28, 2017
Examination started
Search/Exam
Jan 11, 2017
Jul 16, 2015
Jul 16, 2015
Amended claims with annotations
Search/Exam
Jul 16, 2015
Amendments received before examination
Search/Exam
Mar 12, 2015
Submission concerning representation
Search/Exam
Jan 23, 2015
Jan 7, 2015
Jan 7, 2015
European search opinion
Search/Exam
Jan 7, 2015
Jan 7, 2015
Supplementary European search report
Search/Exam
Dec 5, 2014
Search started
Search/Exam
Dec 4, 2013
Notification of forthcoming publication
Search/Exam
Nov 8, 2013
Oct 24, 2013
Oct 16, 2013
Note on telephone consultation
Search/Exam
Oct 11, 2013
Notice on debiting of fees
Search/Exam
Oct 8, 2013
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Sep 24, 2013
(Electronic) Receipt
Search/Exam
Sep 24, 2013
Abstract
Search/Exam
Sep 24, 2013
Sep 24, 2013
Amended description with annotations
Search/Exam
Sep 24, 2013
Claims
Search/Exam
Sep 24, 2013
Converted Sequence Listing
Search/Exam
Sep 24, 2013
Description
Search/Exam
Sep 24, 2013
Drawings
Search/Exam
Sep 24, 2013
Sep 24, 2013
Request for entry into the European phase
Search/Exam
Sep 11, 2013
Sep 11, 2013
Jul 5, 2013
Information on entry into European phase
Search/Exam
Sep 18, 2012
Sep 18, 2012
Aug 30, 2012
Converted Sequence Listing
Search/Exam
Aug 30, 2012
Copy of the international search report
Search/Exam
Aug 30, 2012
Aug 30, 2012
International publication pamphlet
Search/Exam