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Expired European patentEurope

Method and apparatus to block spam based on spam reports from a community of users

EP 1680728 B1 · Applicant: Cloudmark, Inc.

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed November 3, 2004 and granted February 26, 2014. A European patent lasts at most 20 years from filing, so its term ended November 3, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledNovember 3, 2004
PublishedJuly 19, 2006
GrantedFebruary 26, 2014
Term endedNovember 3, 2024
Application numberEP 04800727
Classification (CPC)H04L51/212

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedNov 3, 2004PublishedJuly 19, 2006Patent grantedFeb 26, 2014Term endedNov 3, 2024

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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