Method For Working Up Alkaline Polyether Polyols

Patent No. EP3083757 (titled "Method For Working Up Alkaline Polyether Polyols") was filed by Covestro on Dec 16, 2014. The application was issued on Aug 23, 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
REPSOLJun 15, 2021ABG LAW

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

EP3083757

COVESTRO
Application Number
EP14812257A
Filing Date
Dec 16, 2014
Status
Patent Maintained As Amended
Jul 21, 2023
Publication Date
Aug 23, 2023