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Expired European patentEurope

Method for detecting calls and corresponding units

EP 1502448 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 April 30, 2003 and granted March 16, 2011. A European patent lasts at most 20 years from filing, so its term ended April 30, 2023.
  • 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.
FiledApril 30, 2003
PublishedFebruary 2, 2005
GrantedMarch 16, 2011
Term endedApril 30, 2023
Application numberEP 03749839
Classification (CPC)H04L65/1069 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedApril 30, 2003PublishedFeb 2, 2005Patent grantedMarch 16, 2011Term endedApril 30, 2023

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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