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Expired European patentEurope

Method of checking the authenticity of an electric circuit arrangement

EP 0954822 B1 · Applicant: Koninklijke Philips Electronics N.V.

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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 August 27, 1998 and granted November 24, 2004. A European patent lasts at most 20 years from filing, so its term ended August 27, 2018.
  • 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 February 27, 2024.
  • 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.
FiledAugust 27, 1998
PublishedNovember 10, 1999
GrantedNovember 24, 2004
Term endedAugust 27, 2018
Application numberEP 98938846
Classification (CPC)G06Q20/341 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedAug 27, 1998PublishedNov 10, 1999Patent grantedNov 24, 2004Term endedAug 27, 2018

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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