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Expired European patentEurope

Optical coupling structure, method of realizing such a structure and related positioning means

EP 0683409 B1 · Applicant: ALCATEL

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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 May 18, 1994 and granted August 14, 2002. A European patent lasts at most 20 years from filing, so its term ended May 18, 2014.
  • 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 November 18, 2019.
  • 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.
FiledMay 18, 1994
PublishedNovember 22, 1995
GrantedAugust 14, 2002
Term endedMay 18, 2014
Application numberEP 94201401
Classification (CPC)G02B6/3873 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 18, 1994PublishedNov 22, 1995Patent grantedAug 14, 2002Term endedMay 18, 2014

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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