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IP Verse

Cellulose Acetate And Cellulose Acetate Composition - EP3862388

The patent EP3862388 was granted to Daicel on Jul 26, 2023. The application was originally filed on Dec 9, 2019 under application number EP19888249A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3862388

DAICEL
Application Number
EP19888249A
Filing Date
Dec 9, 2019
Status
Granted And Under Opposition
Jun 23, 2023
Publication Date
Jul 26, 2023
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

Patent Oppositions (3)

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 DateRepresentativeOpposition Status

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ACETATEApr 26, 2024SIMMONS & SIMMONS MUNICHADMISSIBLE
CERDIAApr 26, 2024MEISSNER BOLTEADMISSIBLE
CERDIAApr 26, 2024MEISSNER BOLTE PARTNERSCHAFT MBBADMISSIBLE

Patent Citations (22) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONJPH10215892
DESCRIPTIONWO2011093216
DESCRIPTIONWO2016092024
INTERNATIONAL-SEARCH-REPORTJP2009019123
INTERNATIONAL-SEARCH-REPORTJP2009155555
INTERNATIONAL-SEARCH-REPORTJP2018500416
INTERNATIONAL-SEARCH-REPORTWO02072638
OPPOSITIONEP0597478
OPPOSITIONEP0716117
OPPOSITIONEP0783841
OPPOSITIONEP0987276
OPPOSITIONEP2075261
OPPOSITIONEP2883906
OPPOSITIONJP2009091543
OPPOSITIONJPH0479361B
OPPOSITIONUS5288318
OPPOSITIONWO2010043293
OPPOSITIONWO2016092024
OPPOSITIONWO9307771
OPPOSITIONWO9410238
SEARCHEP2075261
SEARCHEP2883906

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

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