IP Verse

Polyacrylic Acid (Polyacrylate) Superabsorbent Polymer Powder - EP3520978

The patent EP3520978 was granted to Nippon Shokubai on Nov 4, 2020. The application was originally filed on Aug 28, 2014 under application number EP19165778A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3520978

NIPPON SHOKUBAI
Application Number
EP19165778A
Filing Date
Aug 28, 2014
Status
Granted And Under Opposition
Oct 2, 2020
Grant Date
Nov 4, 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

Get instant alerts for new oppositions and patent status changes

EVONIK SUPERABSORBERJul 28, 2021VOLLMERADMISSIBLE
STOCKHAUSEN SUPERABSORBERJul 28, 2021OFFICE FREYLINGERADMISSIBLE

Patent Citations (59) New

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

Citation PhasePublication NumberPublication Link
DESCRIPTIONEP0349240
DESCRIPTIONEP0574260
DESCRIPTIONEP1594556
DESCRIPTIONJP2000302876
DESCRIPTIONJPH06107800
DESCRIPTIONUS2005048221
DESCRIPTIONUS2005070671
DESCRIPTIONUS2005215734
DESCRIPTIONUS2005288182
DESCRIPTIONUS2006073969
DESCRIPTIONUS2006247351
DESCRIPTIONUS2007106013
DESCRIPTIONUS2009239966
DESCRIPTIONUS4783510
DESCRIPTIONUS4893999
DESCRIPTIONUS5562646
DESCRIPTIONUS5669894
DESCRIPTIONUS6071976
DESCRIPTIONUS6140395
DESCRIPTIONUS6228930
DESCRIPTIONUS6241928
DESCRIPTIONUS6254990
DESCRIPTIONUS6562879
DESCRIPTIONUS6565768
DESCRIPTIONUS6599989
DESCRIPTIONUS6605673
DESCRIPTIONUS6620889
DESCRIPTIONUS6710141
DESCRIPTIONUS6906159
DESCRIPTIONUS6987171
DESCRIPTIONUS7091253
DESCRIPTIONUS7098284
DESCRIPTIONUS7157141
DESCRIPTIONUS7473739
DESCRIPTIONUS7638570
DESCRIPTIONUS7694900
DESCRIPTIONWO2005016393
DESCRIPTIONWO2006062258
DESCRIPTIONWO2006082188
DESCRIPTIONWO2006082189
DESCRIPTIONWO2006082197
DESCRIPTIONWO2006111402
DESCRIPTIONWO2006111403
DESCRIPTIONWO2006111404
DESCRIPTIONWO2007121037
DESCRIPTIONWO2008009842
DESCRIPTIONWO2008009843
DESCRIPTIONWO2008090961
DESCRIPTIONWO2009016055
DESCRIPTIONWO2009048160
DESCRIPTIONWO2011034147
DESCRIPTIONWO2011078298
DESCRIPTIONWO2011126079
EXAMINATIONUS6254990
OPPOSITIONUS6562879
SEARCHEP2565219
SEARCHEP3040362
SEARCHUS2011313113
SEARCHUS2013026412

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 TextLink
OPPOSITION- ANONYMOUS, "RECOMMENDED TEST METHOD: Superabsorbent materials - Polyacrylate superabsorbent powders GRAVIMETRIC DETERMINATION OF DENSITY", EDANA DENSITY 460.2-02, (2002), pages 325 - 331, XP055833500-
OPPOSITION- Anonymous, "RECOMMENDED TEST METHOD: Superabsorbent materials - Polyacrylate superabsorbent powders MOISTURE CONTENT - WEIGHT LOSS UPON HEATINGS", edana moisture content 430.2-02, (2002), pages 291 - 295, XP055833493-
OPPOSITION- Anonymous, "Standard Bottles Catalogue English 2020", Nihon Yamamura Co., Ltd., pages 1 - 74, URL: https://wwwv.yamamura.co.jp/english/business/pdf/Standard_Bottles_Catalogue_2020.pdf, XP055833495-

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