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EP3662770

DAICEL
Application Number
EP18875018A
Filing Date
Oct 25, 2018
Status
Granted And Under Opposition
Jan 22, 2021
Grant Date
Feb 24, 2021
External Links
Slate, Register, Google Patents

Biblio Summary

The patent EP3662770B1 was granted on Feb 24, 2021 by Daicel The patent is currently Granted And Under Opposition.

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 DateOpposition Status

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CERDIANov 24, 2021ADMISSIBLE
EASTMAN CHEMICALNov 24, 2021ADMISSIBLE
CELANESENov 19, 2021ADMISSIBLE

The table below shows the patents of Daicel that have been opposed by other companies.

Patent NumberTitleGrant DateOpposition Count
EP3653765Cellulose Acetate Tow Band, And Method For Producing Cellulose Acetate Tow BandJun 19, 20243
EP4085770Tow Band For Smoking Article, Filter For Smoking Article, Smoking Article, And Cartridge For Smoking ArticleMar 20, 20242
EP3508301Metal Molded Body Surface Roughening MethodDec 13, 20231

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.