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IP Verse

Hydroxyalkyl Alkyl Cellulose, Method For Producing The Same, And Solid Preparation - EP3309179

The patent EP3309179 was granted to Shin Etsu Chemical on Feb 23, 2022. The application was filed on Oct 6, 2017 under application number EP17195310A. The patent is currently recorded with a legal status of "Revoked".

EP3309179

SHIN ETSU CHEMICAL
Application Number
EP17195310A
Filing Date
Oct 6, 2017
Status
Revoked
Feb 21, 2025
Publication Date
Feb 23, 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
DUPONT NUTRITION BIOSCIENCES APSNov 23, 2022F & E PATENTADMISSIBLE

Patent Citations (17) New

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

Citation PhasePublication Number
DESCRIPTIONJP2010254756
DESCRIPTIONJP2010523688
DESCRIPTIONJP2014510137
DESCRIPTIONJP2015166453
DESCRIPTIONJPH06316535
DESCRIPTIONWO2008127794
DESCRIPTIONWO2012138529
OPPOSITIONEP2754673
OPPOSITIONEP2837638
OPPOSITIONEP2907508
OPPOSITIONEP3308774
SEARCHGB1139519
SEARCHUS4734285
SEARCHUS6235893
SEARCHWO0032637
SEARCHWO2012138532
SEARCHWO2014052213

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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