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IP Verse

Porous Water-Soluble Nonionic Cellulose Ether Having Excellent Solubility And Method For Producing The Same - EP3205671

The patent EP3205671 was granted to Shin Etsu Chemical on Apr 29, 2020. The application was originally filed on Oct 24, 2016 under application number EP16195370A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP3205671

SHIN ETSU CHEMICAL
Application Number
EP16195370A
Filing Date
Oct 24, 2016
Status
Opposition Rejected
Apr 11, 2025
Publication Date
Apr 29, 2020
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
DUPONT NUTRITION BIOSCIENCES APSDec 11, 2020F & EADMISSIBLE
DUPONT NUTRITION BIOSCIENCES APSDec 11, 2020F & E PATENTADMISSIBLE

Patent Citations (14) New

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

Citation PhasePublication Number
DESCRIPTIONJP2000063565
DESCRIPTIONJPH06166026
DESCRIPTIONJPS426674B
DESCRIPTIONJPS486622B
OPPOSITIONEP2837638
OPPOSITIONUS2001025101
OPPOSITIONWO2012015400
SEARCHEP1642922
SEARCHEP2075259
SEARCHEP2722354
SEARCHEP2754673
SEARCHEP2837638
SEARCHJPH11322801
SEARCHUS2015258002

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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