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Cellulose Acetate And Cellulose Acetate Composition

PatentPatent Analysis

EP4026851

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

The patent EP4026851B1 was granted to Daicel on Dec 13, 2023 following the initial filing on Oct 21, 2020 under the application number EP20955471A . The current legal status of the patent is Granted And Under Opposition.

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Patent Oppositions filed by Competitors

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.

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CERDIASep 13, 2024ADMISSIBLE
ACETATESep 10, 2024ADMISSIBLE

Dossier Documents of the Patent

The dossier documents provide a comprehensive record of the patent’s prosecution history, including filings, correspondence, and decisions made by patent offices. These documents are crucial for understanding the patent’s legal journey and any challenges it may have faced during examination. It also includes the oppositions documents filed against the patent.

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