Water Absorbent Resin And Method For Producing Same

Patent No. EP2615117 (titled "Water Absorbent Resin And Method For Producing Same") was filed by Sumitomo Seika Chemicals on Sep 2, 2011. The application was issued on Dec 27, 2023.

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 DateRepresentative
NIPPON SHOKUBAIDec 16, 2021DR SCHON

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

EP2615117

SUMITOMO SEIKA CHEMICALS
Application Number
EP11823500A
Filing Date
Sep 2, 2011
Status
Patent Maintained As Amended
Nov 24, 2023
Publication Date
Dec 27, 2023