The weekly litigation news digest is live. Subscribe now
The patent EP2154244 was granted to Chugai Seiyaku Kabushiki Kaisha on Apr 12, 2017. The application was filed on Apr 25, 2008 under application number EP08752120A. The patent is currently recorded with a legal status of "Revoked".

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 | Opposition Status |
|---|---|---|---|
| HOFFMANN EITLE | Jan 12, 2018 | HOFFMANN EITLE | ADMISSIBLE |
| NEUEFEIND | Jan 12, 2018 | NEUEFEIND | ADMISSIBLE |
| OETKE | Jan 12, 2018 | OETKE | ADMISSIBLE |
| STORZ | Jan 12, 2018 | MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
| THOMAE | Jan 11, 2018 | WOHLFAHRT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JPH0899902 |
| DESCRIPTION | WO2006006693 |
| EXAMINATION | JP2006296282 |
| EXAMINATION | WO2006050050 |
| INTERNATIONAL-SEARCH-REPORT | JPH01231887 |
| INTERNATIONAL-SEARCH-REPORT | JPH04501660 |
| INTERNATIONAL-SEARCH-REPORT | JPH05252942 |
| OPPOSITION | EP1229125 |
| OPPOSITION | EP2154244 |
| OPPOSITION | EP2351833 |
| OPPOSITION | GB2251249 |
| OPPOSITION | US2003087372 |
| OPPOSITION | US2004229319 |
| OPPOSITION | US2006121568 |
| OPPOSITION | US6048728 |
| OPPOSITION | WO02101019 |
| OPPOSITION | WO2006026408 |
| OPPOSITION | WO2006026445 |
| OPPOSITION | WO2006026447 |
| OPPOSITION | WO2006050050 |
| OPPOSITION | WO2008063892 |
| OPPOSITION | WO9845411 |
| OTHER | EP1132465 |
| OTHER | WO2006026408 |
| SEARCH | DE3734632 |
| SEARCH | EP0481791 |
| SEARCH | EP0513738 |
| SEARCH | EP1132465 |
| SEARCH | US2004229319 |
| SEARCH | US6048728 |
| SEARCH | WO0233109 |
| SEARCH | WO2006026408 |
| SEARCH | WO9112316 |
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
Get instant alerts for new documents
Aug 24, 2022
Jul 29, 2022
Advice of delivery
Appeal
Jul 28, 2022
Advice of delivery
Appeal
Jul 27, 2022
Jul 27, 2022
Jul 27, 2022
Jul 27, 2022
Jul 27, 2022
Jul 27, 2022
Jul 27, 2022
Jun 13, 2022
Jun 13, 2022
May 25, 2022
May 20, 2022
(Electronic) Receipt
Appeal
May 20, 2022
May 20, 2022
May 20, 2022
May 18, 2022
(Electronic) Receipt
Appeal
May 18, 2022
May 18, 2022
May 18, 2022
May 18, 2022
May 17, 2022
(Electronic) Receipt
Appeal
May 17, 2022
May 17, 2022
May 17, 2022
May 16, 2022
May 11, 2022
(Electronic) Receipt
Appeal
May 11, 2022
May 11, 2022
May 10, 2022
(Electronic) Receipt
Appeal
May 10, 2022
May 10, 2022
May 5, 2022
(Electronic) Receipt
Appeal
May 5, 2022
May 5, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 3, 2022
(Electronic) Receipt
Appeal
May 3, 2022
(Electronic) Receipt
Appeal
May 3, 2022
(Electronic) Receipt
Appeal
May 3, 2022
May 3, 2022
May 3, 2022
May 3, 2022
May 3, 2022
May 3, 2022
May 3, 2022
Apr 29, 2022
(Electronic) Receipt
Appeal
Apr 29, 2022
Apr 29, 2022
Apr 6, 2022
Apr 6, 2022
Apr 6, 2022
Apr 6, 2022
Apr 6, 2022
Apr 6, 2022
Nov 5, 2021
Aug 12, 2021
Aug 10, 2021
Advice of delivery
Appeal
Aug 9, 2021
(Electronic) Receipt
Appeal
Aug 9, 2021
Aug 9, 2021
Aug 9, 2021
Aug 6, 2021
Advice of delivery
Appeal
Aug 6, 2021
Advice of delivery
Appeal
Aug 4, 2021
Advice of delivery
Appeal
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Aug 3, 2021
Jul 29, 2021
Oct 20, 2020
May 7, 2020
Apr 30, 2020
Apr 30, 2020
Apr 29, 2020
(Electronic) Receipt
Appeal
Apr 29, 2020
Apr 29, 2020
Reply to appeal
Appeal
Apr 27, 2020
(Electronic) Receipt
Appeal
Apr 27, 2020
Apr 27, 2020
Reply to appeal
Appeal
Apr 22, 2020
(Electronic) Receipt
Appeal
Apr 22, 2020
Apr 22, 2020
Reply to appeal
Appeal
Apr 20, 2020
Apr 20, 2020
Apr 15, 2020
(Electronic) Receipt
Appeal
Apr 15, 2020
(Electronic) Receipt
Appeal
Apr 15, 2020
Apr 15, 2020
Apr 15, 2020
Reply to appeal
Appeal
Apr 15, 2020
Reply to appeal
Appeal
Dec 19, 2019
Dec 13, 2019
(Electronic) Receipt
Appeal
Dec 13, 2019
Dec 13, 2019
Dec 13, 2019
Dec 13, 2019
Dec 13, 2019
Dec 13, 2019
Claims
Appeal
Dec 13, 2019
Claims
Appeal
Dec 13, 2019
Claims
Appeal
Dec 13, 2019
Claims
Appeal
Dec 13, 2019
Dec 13, 2019
Nov 18, 2019
Nov 13, 2019
Nov 4, 2019
Oct 29, 2019
(Electronic) Receipt
Appeal
Oct 29, 2019
Oct 29, 2019
Oct 24, 2019
Oct 15, 2019
(Electronic) Receipt
Appeal
Oct 15, 2019
Oct 15, 2019
Notice of appeal
Appeal
Aug 14, 2019
Aug 12, 2019
Aug 9, 2019
Aug 9, 2019
Aug 9, 2019
Aug 9, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 6, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Means of redress
OPPO
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Jul 4, 2019
Jul 4, 2019
Jul 4, 2019
Jul 4, 2019
Jul 4, 2019
Jul 3, 2019
Jul 2, 2019
Jul 1, 2019
Jul 1, 2019
Jul 1, 2019
Jul 1, 2019
Jul 1, 2019
Jun 28, 2019
Jun 12, 2019
Jun 12, 2019
Jun 12, 2019
Jun 12, 2019
Jun 12, 2019
Jun 11, 2019
Jun 11, 2019
Jun 11, 2019
Jun 11, 2019
Jun 11, 2019
Jun 6, 2019
Jun 6, 2019
Jun 6, 2019
Jun 4, 2019
Jun 4, 2019
Jun 4, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 7, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 6, 2019
May 2, 2019
May 2, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 30, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 29, 2019
Apr 26, 2019
Apr 26, 2019
Apr 26, 2019
Apr 26, 2019
Apr 26, 2019
Apr 26, 2019
Apr 26, 2019
Feb 25, 2019
Feb 25, 2019
Feb 25, 2019
Feb 25, 2019
Feb 25, 2019
Feb 19, 2019
Feb 19, 2019
Feb 19, 2019
Nov 7, 2018
Nov 6, 2018
Nov 6, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 5, 2018
Nov 2, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 31, 2018
Oct 18, 2018
Oct 18, 2018
Oct 18, 2018
Oct 18, 2018
Oct 18, 2018
Oct 15, 2018
Oct 15, 2018
Oct 12, 2018
Oct 12, 2018
Sep 20, 2018
Sep 19, 2018
Sep 18, 2018
Sep 17, 2018
Sep 17, 2018
Sep 17, 2018
Sep 14, 2018
Sep 14, 2018
Sep 14, 2018
Sep 14, 2018
Sep 14, 2018
Sep 13, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Sep 12, 2018
Jul 3, 2018
Jul 3, 2018
Jul 3, 2018
Jul 3, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Jun 8, 2018
Jun 8, 2018
May 3, 2018
May 3, 2018
May 3, 2018
May 3, 2018
May 3, 2018
May 3, 2018
Apr 20, 2018
Jan 29, 2018
Jan 29, 2018
Jan 29, 2018
Jan 29, 2018
Jan 29, 2018
Jan 29, 2018
Jan 18, 2018
Jan 18, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 12, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Apr 12, 2017
Mar 16, 2017
Decision to grant a European patent
Search/Exam
Feb 28, 2017
Filing of the translations of the claims
Search/Exam
Feb 28, 2017
French translation of claims
Search/Exam
Feb 28, 2017
German translation of the claims
Search/Exam
Feb 28, 2017
Payment of fees and costs
Search/Exam
Oct 18, 2016
Oct 18, 2016
Oct 18, 2016
Intention to grant (signatures)
Search/Exam
Oct 18, 2016
Text intended for grant (clean copy)
Search/Exam
Oct 18, 2016
Text intended for grant (sequence listing)
Search/Exam
Oct 18, 2016
Sep 20, 2016
Amended claims with annotations
Search/Exam
Sep 20, 2016
Amended claims with annotations
Search/Exam
Sep 20, 2016
Amended description with annotations
Search/Exam
Sep 20, 2016
Claims
Search/Exam
Sep 20, 2016
Description
Search/Exam
Sep 20, 2016
Aug 4, 2016
Jul 28, 2016
Mar 22, 2016
Annex to the communication
Search/Exam
Mar 22, 2016
Communication from the Examining Division
Search/Exam
Jan 25, 2016
Amended claims with annotations
Search/Exam
Jan 25, 2016
Claims
Search/Exam
Jan 25, 2016
Nov 27, 2015
Nov 20, 2015
Jul 16, 2015
Annex to the communication
Search/Exam
Jul 16, 2015
Communication from the Examining Division
Search/Exam
Jul 13, 2015
Jul 13, 2015
Jun 26, 2015
(Electronic) Receipt
Search/Exam
Jun 26, 2015
Letter accompanying subsequently filed items
Search/Exam
Jun 26, 2015
Observations by third parties
Search/Exam
Jun 10, 2015
Amended description with annotations
Search/Exam
Jun 10, 2015
Description
Search/Exam
Jun 10, 2015
Mar 12, 2015
Submission concerning representation
Search/Exam
Feb 6, 2015
Annex to the communication
Search/Exam
Feb 6, 2015
Communication from the Examining Division
Search/Exam
Jan 7, 2015
Jan 14, 2014
Amended claims with annotations
Search/Exam
Jan 14, 2014
Claims
Search/Exam
Jan 14, 2014
Nov 21, 2013
Nov 14, 2013
Jul 4, 2013
Annex to the communication
Search/Exam
Jul 4, 2013
Communication from the Examining Division
Search/Exam
Feb 1, 2013
Amended claims with annotations
Search/Exam
Feb 1, 2013
Claims
Search/Exam
Feb 1, 2013
Oct 30, 2012
Annex to a communication
Search/Exam
Oct 30, 2012
Annex to a communication
Search/Exam
Oct 30, 2012
Sep 21, 2012
Annex to the communication
Search/Exam
Sep 21, 2012
Communication from the Examining Division
Search/Exam
Feb 8, 2012
Feb 8, 2012
Amended claims with annotations
Search/Exam
Feb 8, 2012
Amendments received before examination
Search/Exam
Jul 29, 2011
Jul 12, 2011
Jul 12, 2011
European search opinion
Search/Exam
Jul 12, 2011
Supplementary European search report
Search/Exam
Jan 20, 2010
Notification of forthcoming publication
Search/Exam
Dec 9, 2009
Nov 25, 2009
(Electronic) Receipt
Search/Exam
Nov 25, 2009
Abstract
Search/Exam
Nov 25, 2009
Nov 25, 2009
Claims
Search/Exam
Nov 25, 2009
Description
Search/Exam
Nov 25, 2009
Drawings
Search/Exam
Nov 25, 2009
Request for entry into the European phase
Search/Exam
Nov 25, 2009
Sequence listing
Search/Exam
Nov 25, 2009
Nov 11, 2009
Sep 18, 2009
Information on entry into European phase
Search/Exam
Dec 4, 2008
Nov 13, 2008
Copy of the international search report
Search/Exam
Nov 13, 2008
Nov 13, 2008
International publication pamphlet
Search/Exam
Nov 13, 2008
Sequence listing
Search/Exam