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IP Verse

A Silver-Catalyst Composition, A Process For Preparing The Catalyst Composition And A Use Of The Catalyst Composition For The Epoxidation Of Ethylene - EP1641559

The patent EP1641559 was granted to Shell Internationale Research Maatschappij on Jan 22, 2020. The application was filed on Mar 30, 2004 under application number EP04758662A. The patent is currently recorded with a legal status of "Revoked".

EP1641559

SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ
Application Number
EP04758662A
Filing Date
Mar 30, 2004
Status
Revoked
Sep 30, 2022
Publication Date
Jan 22, 2020
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
BASFOct 21, 2020REITSTOTTER KINZEBACH -

Patent Citations (11) New

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

Citation PhasePublication Number
EXAMINATIONUS4916243
INTERNATIONAL-SEARCH-REPORTEP0266015
INTERNATIONAL-SEARCH-REPORTUS4766105
INTERNATIONAL-SEARCH-REPORTUS5380697
OPPOSITIONUS4766105
OPPOSITIONUS4916243
OPPOSITIONUS5100859
OPPOSITIONUS5187140
OPPOSITIONUS5703253
OPPOSITIONUS5705661
OPPOSITIONWO9740933

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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