IP Verse

Preparation Of Polyurethane Foam

Patent No. EP3677610 (titled "Preparation Of Polyurethane Foam") was filed by Evonik Operations on Jan 7, 2019. The application was issued on Sep 22, 2021.

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
MOMENTIVE PERFORMANCE MATERIALSJun 22, 2022GILLE HRABAL PARTNERSCHAFTSGESELLSCHAFT MBB PATENTANWALTE

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

EP3677610

EVONIK OPERATIONS
Application Number
EP19150465A
Filing Date
Jan 7, 2019
Status
Granted And Under Opposition
Aug 20, 2021
Publication Date
Sep 22, 2021
External Links
Slate, EP3677610B1, Google Patents