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IP Verse

A Process Of Preparing An Ester Of A Cellulose Ether - EP2831121

The patent EP2831121 was granted to DOW on Oct 10, 2018. The application was filed on Mar 12, 2013 under application number EP13724915A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP2831121

DOW
Application Number
EP13724915A
Filing Date
Mar 12, 2013
Status
Granted And Under Opposition
Sep 7, 2018
Publication Date
Oct 10, 2018
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
SHIN ETSU CHEMICALJul 9, 2019GRUNECKER PATENTWITHDRAWN

Patent Citations (17) New

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

Citation PhasePublication Number
DESCRIPTIONEP0219426
DESCRIPTIONUS2004152886
DESCRIPTIONUS2011091360
DESCRIPTIONUS3435027
DESCRIPTIONUS4226981
DESCRIPTIONWO2005115330
INTERNATIONAL-SEARCH-REPORTEP2295470
INTERNATIONAL-SEARCH-REPORTUS3525735
INTERNATIONAL-SEARCH-REPORTUS4226981
OPPOSITIONEP0219426
OPPOSITIONJPH05339301
OPPOSITIONJPH05339382
OPPOSITIONJPH07185354
OPPOSITIONUS2852508
OPPOSITIONUS3525735
OPPOSITIONUS4226981
OPPOSITIONWO2005115330

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.

  • Date

    Description

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