IP Verse

Novel Esterified Cellulose Ethers Of High Molecular Weight And Homogeneity - EP2888290

The patent EP2888290 was granted to DOW on Dec 26, 2018. The application was originally filed on Aug 15, 2013 under application number EP13752793A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP2888290

DOW
Application Number
EP13752793A
Filing Date
Aug 15, 2013
Status
Opposition Rejected
Oct 1, 2021
Publication Date
Dec 26, 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

Get instant alerts for new oppositions and patent status changes

SHIN ETSU CHEMICALSep 26, 2019GRUNECKER PATENTADMISSIBLE

Patent Citations (7) New

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

Citation PhasePublication Number
INTERNATIONAL-SEARCH-REPORTWO2006082518
OPPOSITIONEP2476439
OPPOSITIONJPH05339301
OPPOSITIONUS2001053778
OPPOSITIONWO2005115330
OPPOSITIONWO2013164121
OPPOSITIONWO2014031446

Non-Patent Literature (NPL) Citations (3) New

NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.

Citation PhaseReference Text
EXAMINATION- FUKASAWA MIYUKI ET AL, "Molecular weight determination of hypromellose acetate succinate (HPMCAS) using size exclusion chromatography with a multi-angle laser light scattering detector.", CHEMICAL & PHARMACEUTICAL BULLETIN NOV 2004, (200411), vol. 52, no. 11, ISSN 0009-2363, pages 1391 - 1393
OPPOSITION- S.H.W. WU et al., "Chapter 11: Chemistry and applications of cellulosic polymers for enteric coatings of solid dosage forms", S.H.W. WU et al., James W. McGinity, AQUEOUS POLYMERIC COATINGS FOR PHARMACEUTICAL DOSAGE FORMS, New York, Marcel Dekker, (19970000), vol. 79, pages 385 - 418, XP009184512
OPPOSITION- R. CHEN et al., "Absolute molecular weight determination of hypromellose acetate succinate by size exclusion chromatography: Use of a multi angle laser light scattering detector and a mixed solvent", Journal of Pharmaceutical and Biomedical Analysis, (20110000), vol. 56, pages 743 - 748, XP028269943

Download Citation Report

Get a free citation report including examiner, opposition, and international search citations.

Get Citation Report

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

  • Get instant alerts for new documents