IP Verse

Polymer Of 2-Acrylamido-2-Methylpropane Sulfonic Acid Or The Salts Thereof - EP4211175

The patent EP4211175 was granted to SNF Group on Oct 23, 2024. The application was originally filed on Aug 19, 2021 under application number EP21769773A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP4211175

SNF GROUP
Application Number
EP21769773A
Filing Date
Aug 19, 2021
Status
Granted And Under Opposition
Sep 19, 2024
Grant Date
Oct 23, 2024
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

CLARIANTJul 11, 2025CLARIANT PRODUKTE DEUTSCHLANDADMISSIBLE

Patent Citations (21) New

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

Citation PhasePublication NumberPublication Link
DESCRIPTIONJP2010270168
DESCRIPTIONJP2010270169
DESCRIPTIONJP2010270170
DESCRIPTIONUS2010274048
DESCRIPTIONWO2018172676
EXAMINATIONEP3350159
EXAMINATIONJP2011046612
EXAMINATIONJP2015504441
INTERNATIONAL-SEARCH-REPORTEP3350159
INTERNATIONAL-SEARCH-REPORTJP2010270168
INTERNATIONAL-SEARCH-REPORTJP2010270169
INTERNATIONAL-SEARCH-REPORTJP2010270170
INTERNATIONAL-SEARCH-REPORTWO2018172676
OPPOSITIONJP2010270168
OPPOSITIONJP2010270169
OPPOSITIONJP2010270170
OPPOSITIONJP2011046612
OPPOSITIONUS2006046949
OPPOSITIONUS2010274048
OPPOSITIONUS2013137893
OPPOSITIONWO2017220512

Non-Patent Literature (NPL) Citations (1) 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- K. Kabiri ; M. J. Zohuriaan-Mehr ; H. Mirzadeh ; M. Kheirabadi, "Solvent-, ion and pH-specific swelling of poly(2-acrylamido-2-methylpropane sulfonic acid) superabsorbing gels", Journal of Polymer Research, Kluwer Academic Publishers-Consultants Bureau, NL, NL , (20090519), vol. 17, no. 2, ISSN 1572-8935, pages 203 - 212, XP019771965-

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