IP Verse

Cellulose Acetate And Cellulose Acetate Composition

Patent No. EP4026851 (titled "Cellulose Acetate And Cellulose Acetate Composition") was filed by Daicel on Oct 21, 2020. The application was issued on Dec 13, 2023.

Patent Summary

Patent Family

Patent Family

Patent Oppositions (2)

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
CERDIASep 13, 2024MEISSNER BOLTE PARTNERSCHAFT MBB
ACETATESep 10, 2024SIMMONS & SIMMONS MUNICH

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

EP4026851

DAICEL
Application Number
EP20955471A
Filing Date
Oct 21, 2020
Status
Granted And Under Opposition
Nov 10, 2023
Publication Date
Dec 13, 2023
External Links
Slate, Register , Google Patents