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Expired European patentEurope

Method and system for securely timestamping digital data

EP 1282263 B1 · Applicant: Chrysalis- ITS 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 August 1, 2002 and granted November 30, 2005. A European patent lasts at most 20 years from filing, so its term ended August 1, 2022.
  • 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.
FiledAugust 1, 2002
PublishedFebruary 5, 2003
GrantedNovember 30, 2005
Term endedAugust 1, 2022
Application numberEP 02078166
Classification (CPC)H04L9/3297

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedAug 1, 2002PublishedFeb 5, 2003Patent grantedNov 30, 2005Term endedAug 1, 2022

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.