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IP Verse

Cellulose Acetate And Cellulose Acetate Composition - EP4026851

The patent EP4026851 was granted to Daicel on Dec 13, 2023. The application was filed on Oct 21, 2020 under application number EP20955471A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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

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 DateRepresentativeOpposition Status
CERDIASep 13, 2024MEISSNER BOLTE PARTNERSCHAFT MBBADMISSIBLE
ACETATESep 10, 2024SIMMONS & SIMMONS MUNICHADMISSIBLE

Patent Citations (19) New

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

Citation PhasePublication Number
DESCRIPTIONJP2002265501
DESCRIPTIONJP2015224256
DESCRIPTIONJP2018500416
INTERNATIONAL-SEARCH-REPORTCN102585297
INTERNATIONAL-SEARCH-REPORTJP2002030182
INTERNATIONAL-SEARCH-REPORTJP2018024803
INTERNATIONAL-SEARCH-REPORTJP2018500416
INTERNATIONAL-SEARCH-REPORTJP2020515682
INTERNATIONAL-SEARCH-REPORTWO2019198307
INTERNATIONAL-SEARCH-REPORTWO2020035964
OPPOSITIONJP2009019123
OPPOSITIONJP2015224256
OPPOSITIONUS2020017647
OPPOSITIONUS5720803
SEARCHCN102585297
SEARCHEP3031847
SEARCHJP2002030182
SEARCHJP2002265501
SEARCHJP2015224256

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.

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    Description

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