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Biaxially Oriented Porous Membranes, Composites, And Methods Of Manufacture And Use - EP2544841

The patent EP2544841 was granted to Celgard on Jul 7, 2021. The application was filed on Mar 11, 2011 under application number EP11754128A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP2544841

CELGARD
Application Number
EP11754128A
Filing Date
Mar 11, 2011
Status
Patent Maintained As Amended
Jun 12, 2021
Publication Date
Jul 7, 2021
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

Patent Oppositions

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
TREOFAN GERMANYOct 16, 2018MAI BESIERWITHDRAWN

Patent Citations (22) New

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

Citation PhasePublication Number
DESCRIPTIONUS4464238
DESCRIPTIONUS6057061
DESCRIPTIONUS6080507
DESCRIPTIONUS6368742
DESCRIPTIONUS6602593
INTERNATIONAL-SEARCH-REPORTUS2007196638
INTERNATIONAL-SEARCH-REPORTUS2008118827
INTERNATIONAL-SEARCH-REPORTUS6811643
OPPOSITIONEP1291380
OPPOSITIONUS2001038942
OPPOSITIONUS4138459
OPPOSITIONUS4257997
OPPOSITIONUS4298666
OPPOSITIONUS4330499
OPPOSITIONUS5013439
OPPOSITIONUS5051225
OPPOSITIONUS5328760
OPPOSITIONUS5565281
OPPOSITIONUS6602593
OPPOSITIONWO2007098339
SEARCHEP1081775
SEARCHWO02051938

Dossier Documents

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    Description

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