IP Verse

Method Of Purifying Protein

Patent No. EP1561756 (titled "Method Of Purifying Protein") was filed by Chugai Seiyaku Kabushiki Kaisha on Sep 11, 2003. The application was issued on Dec 23, 2015.

Patent Summary

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Patent Oppositions (7)

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 DateRepresentative
BAXALTASep 23, 2016HOFFMANN EITLE
GRAF VON STOSCH PATENTANWALTSGESELLSCHAFTSep 23, 2016MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH
MAIWALD PATENTANWALTSSep 23, 2016HUENGES
TAORMINO, JOSEPH PAULSep 23, 2016HOFFMANN EITLE
HOFFMANN EITLESep 22, 2016HOFFMANN EITLE
STRAWMANSep 22, 2016CABINET PLASSERAUD
GLAXO GROUPSep 21, 2016KNIGHT

Dossier Documents

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EP1561756

CHUGAI SEIYAKU KABUSHIKI KAISHA
Application Number
EP03795400A
Filing Date
Sep 11, 2003
Status
Revoked
Sep 10, 2021
Publication Date
Dec 23, 2015
External Links
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