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IP Verse

Kraft Cooking Method Using Polysulfide Cooking Liquor - EP2751331

The patent EP2751331 was granted to Valmet Aktiebolag on Apr 22, 2020. The application was filed on Aug 30, 2011 under application number EP11871390A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP2751331

VALMET AKTIEBOLAG
Application Number
EP11871390A
Filing Date
Aug 30, 2011
Status
Patent Maintained As Amended
Mar 20, 2020
Publication Date
Apr 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
ANDRITZMar 14, 2018AWA SWEDEN -

Patent Citations (13) New

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

Citation PhasePublication Number
DESCRIPTIONUS2009126883
DESCRIPTIONUS3567572
DESCRIPTIONUS3664919
DESCRIPTIONWO03057979
DESCRIPTIONWO9914423
INTERNATIONAL-SEARCH-REPORTCA2763651
INTERNATIONAL-SEARCH-REPORTUS2009126883
INTERNATIONAL-SEARCH-REPORTUS3567572
INTERNATIONAL-SEARCH-REPORTUS3664919
INTERNATIONAL-SEARCH-REPORTWO03057979
INTERNATIONAL-SEARCH-REPORTWO9914423
OPPOSITIONUS3664919
OPPOSITIONUS7828930

Dossier Documents

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    Description

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