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Expired European patentEurope

Apparatus and method of initializing phase-change optical disk

EP 1669990 B1 · Applicant: Electronics and Telecommunications Research Institute

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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 28, 2005 and granted November 4, 2009. A European patent lasts at most 20 years from filing, so its term ended November 28, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 28, 2005
PublishedJune 14, 2006
GrantedNovember 4, 2009
Term endedNovember 28, 2025
Application numberEP 05111378
Classification (CPC)G11B7/268

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedNov 28, 2005PublishedJune 14, 2006Patent grantedNov 4, 2009Term endedNov 28, 2025

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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