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Expired European patentEurope

A method for position-finding and apparatus herefor

EP 0187809 B1 · Applicant: STIFTELSEN INSTITUTET FÖR MIKROVÄGSTEKNIK VID TEKNISKA HÖGSKOLAN I STOCKHOLM

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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 June 26, 1985 and granted June 5, 1991. A European patent lasts at most 20 years from filing, so its term ended June 26, 2005.
  • 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 December 26, 2010.
  • 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.
FiledJune 26, 1985
PublishedJuly 23, 1986
GrantedJune 5, 1991
Term endedJune 26, 2005
Application numberEP 85903431
Classification (CPC)G01S13/82

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJune 26, 1985PublishedJuly 23, 1986Patent grantedJune 5, 1991Term endedJune 26, 2005

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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