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Expired European patentEurope

Illuminated pushbutton keyboard

EP 0508563 B1 · Applicant: NOKIA MOBILE PHONES LTD.

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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 January 27, 1992 and granted September 4, 1996. A European patent lasts at most 20 years from filing, so its term ended January 27, 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 July 27, 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.
FiledJanuary 27, 1992
PublishedOctober 14, 1992
GrantedSeptember 4, 1996
Term endedJanuary 27, 2012
Application numberEP 92300693
Classification (CPC)G06F3/0219 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJan 27, 1992PublishedOct 14, 1992Patent grantedSep 4, 1996Term endedJan 27, 2012

Sources & verification