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Expired European patentEurope

Phase measuring scanning optical microscope

EP 0502005 B1 · Applicant: Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland

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Overview

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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 20, 1990 and granted September 6, 1995. A European patent lasts at most 20 years from filing, so its term ended November 20, 2010.
  • 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 May 20, 2016.
  • 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 20, 1990
PublishedSeptember 9, 1992
GrantedSeptember 6, 1995
Term endedNovember 20, 2010
Application numberEP 90916789
Classification (CPC)G02B27/50 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedNov 20, 1990PublishedSep 9, 1992Patent grantedSep 6, 1995Term endedNov 20, 2010

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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