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Hypromellose Acetate Succinate For Use As Hot-Melt Extrusion Carrier, Hot-Melt Extrusion Composition, And Method For Producing Hot-Melt Extrudate - EP2837391

The patent EP2837391 was granted to Shin Etsu Chemical on May 10, 2017. The application was originally filed on Jul 29, 2014 under application number EP14178879A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP2837391

SHIN ETSU CHEMICAL
Application Number
EP14178879A
Filing Date
Jul 29, 2014
Status
Opposition Rejected
Mar 25, 2022
Publication Date
May 10, 2017
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

Patent Oppositions (2)

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

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HERCULESFeb 12, 2018HOFFMANN EITLEWITHDRAWN
THE DOW CHEMICALFeb 5, 2018N&H EMEAADMISSIBLE

Patent Citations (19) New

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

Citation PhasePublication Number
DESCRIPTIONJP2011516612
DESCRIPTIONJPH04290817
DESCRIPTIONJPS5461282
DESCRIPTIONWO03077827
DESCRIPTIONWO2009129300
OPPOSITIONEP2368544
OPPOSITIONEP2647648
OPPOSITIONJPH04290817
OPPOSITIONUS2008260657
OPPOSITIONUS2009269403
OPPOSITIONWO2009129300
OPPOSITIONWO2009132208
OPPOSITIONWO2012074042
OPPOSITIONWO2012122279
OPPOSITIONWO2012138529
OPPOSITIONWO2012152440
SEARCHUS2009269403
SEARCHWO2008138755
SEARCHWO2010114928

Dossier Documents

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