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

Patent No. EP2837391 (titled "Hypromellose Acetate Succinate For Use As Hot-Melt Extrusion Carrier, Hot-Melt Extrusion Composition, And Method For Producing Hot-Melt Extrudate") was filed by Shin Etsu Chemical on Jul 29, 2014. The application was issued on May 10, 2017.

Patent Summary

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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 DateRepresentative
HERCULESFeb 12, 2018HOFFMANN EITLE
THE DOW CHEMICALFeb 5, 2018N&H EMEA

Dossier Documents

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EP2837391

SHIN ETSU CHEMICAL
Application Number
EP14178879A
Filing Date
Jul 29, 2014
Status
Opposition Rejected
Mar 25, 2022
Publication Date
May 10, 2017