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IP Verse

Preparation Containing Tetracyclic Compound At High Dose - EP3135287

The patent EP3135287 was granted to Chugai Seiyaku Kabushiki Kaisha on Nov 20, 2024. The application was filed on Apr 24, 2015 under application number EP15783124A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3135287

CHUGAI SEIYAKU KABUSHIKI KAISHA
Application Number
EP15783124A
Filing Date
Apr 24, 2015
Status
Granted And Under Opposition
Oct 18, 2024
Publication Date
Nov 20, 2024
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

Patent Oppositions (3)

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
ELKINGTON AND FIFEAug 20, 2025ELKINGTON AND FIFEADMISSIBLE
MANSKEAug 20, 2025WISCHMEYERADMISSIBLE
TEVA PHARMACEUTICALSAug 19, 2025KRAUS & LEDERER PARTGMBBADMISSIBLE

Patent Citations (7) New

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

Citation PhasePublication Number
INTERNATIONAL-SEARCH-REPORTJP4918630B
INTERNATIONAL-SEARCH-REPORTJPH02223522
INTERNATIONAL-SEARCH-REPORTJPH09202728
INTERNATIONAL-SEARCH-REPORTWO2012043709
OPPOSITIONEP2441753
OPPOSITIONEP2606886
SEARCHEP2606886

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.

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    Description

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