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Expired European patentEurope

Device for controlling the intensity of light especially of a pocket light

EP 0818944 B1 · Applicant: Thalhofer, Augustin

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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 28, 1997 and granted November 13, 2002. A European patent lasts at most 20 years from filing, so its term ended June 28, 2017.
  • 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 28, 2022.
  • 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 28, 1997
PublishedJanuary 14, 1998
GrantedNovember 13, 2002
Term endedJune 28, 2017
Application numberEP 97110609
Classification (CPC)H05B39/044

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJune 28, 1997PublishedJan 14, 1998Patent grantedNov 13, 2002Term endedJune 28, 2017

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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