IP Verse

Zinc Alloy Plated Steel Material Having Excellent Surface Quality And Corrosion Resistance, And Method For Manufacturing Same

Patent No. EP3733921 (titled "Zinc Alloy Plated Steel Material Having Excellent Surface Quality And Corrosion Resistance, And Method For Manufacturing Same") was filed by Posco on Dec 13, 2018. The application was issued on Mar 1, 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
ARCELORMITTALNov 29, 2023LAVOIX

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

EP3733921

POSCO
Application Number
EP18896858A
Filing Date
Dec 13, 2018
Status
Opposition Rejected
Aug 22, 2025
Publication Date
Mar 1, 2023
External Links
Slate, Register , Google Patents