The weekly litigation news digest is live. Subscribe now

IP Verse

Antitumor T Cell Response Enhancer - EP2578231

The patent EP2578231 was granted to Chugai Seiyaku Kabushiki Kaisha on Oct 26, 2022. The application was filed on May 27, 2011 under application number EP11786748A. The patent is currently recorded with a legal status of "Revoked".

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

Patent Summary

Patent Family

Patent Family

Patent Oppositions

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.

CompanyOpposition DateRepresentativeOpposition Status
GEDEON RICHTER PHARMAJul 25, 2023MAIWALDADMISSIBLE

Patent Citations (52) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONEP0058481
DESCRIPTIONEP0125023
DESCRIPTIONEP0133988
DESCRIPTIONEP0239400
DESCRIPTIONEP0325474
DESCRIPTIONEP0411946
DESCRIPTIONJPH0159878B
DESCRIPTIONJPH03139293
DESCRIPTIONJPH03155795
DESCRIPTIONJPH03219894
DESCRIPTIONJPH08291199
DESCRIPTIONUS3773919
DESCRIPTIONUS5571513
DESCRIPTIONWO0010607
DESCRIPTIONWO0203492
DESCRIPTIONWO02080969
DESCRIPTIONWO2009041621
DESCRIPTIONWO2009148148
DESCRIPTIONWO9201047
DESCRIPTIONWO9203918
DESCRIPTIONWO9219759
DESCRIPTIONWO9220791
DESCRIPTIONWO9306213
DESCRIPTIONWO9311236
DESCRIPTIONWO9312227
DESCRIPTIONWO9319172
DESCRIPTIONWO9402602
DESCRIPTIONWO9411523
DESCRIPTIONWO9425585
DESCRIPTIONWO9501438
DESCRIPTIONWO9515388
DESCRIPTIONWO9611020
DESCRIPTIONWO9612503
DESCRIPTIONWO9617869
DESCRIPTIONWO9618648
DESCRIPTIONWO9630394
DESCRIPTIONWO9633735
DESCRIPTIONWO9634096
DESCRIPTIONWO9842377
DESCRIPTIONWO9947170
EXAMINATIONEP2305306
EXAMINATIONWO2009148148
INTERNATIONAL-SEARCH-REPORTJP2010527615
INTERNATIONAL-SEARCH-REPORTWO2009148148
OPPOSITIONEP0800829
OPPOSITIONEP1967209
OPPOSITIONEP2305306
OPPOSITIONUS2010129357
OPPOSITIONWO2007061029
OPPOSITIONWO2009148148
OPPOSITIONWO9620728
SEARCHEP2578233

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

  • Get instant alerts for new documents