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Expired European patentEurope

Method in mobile telephone systems in which a subscriber identity module (sim) is allocated at least two identities which are selectively activated by the user

EP 0579655 B1 · Applicant: COMVIK GSM AB

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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.

Why it's free to use

  • Filed April 8, 1992 and granted March 5, 1997. A European patent lasts at most 20 years from filing, so its term ended April 8, 2012.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by October 8, 2017.
  • 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 8, 1992
PublishedJanuary 26, 1994
GrantedMarch 5, 1997
Term endedApril 8, 2012
Application numberEP 92907791
Classification (CPC)H04W4/24 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedApril 8, 1992PublishedJan 26, 1994Patent grantedMarch 5, 1997Term endedApril 8, 2012

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