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Expired European patentEurope

Optical disk apparatus, focus-value correcting method, and optical disk

EP 1085508 B1 · Applicant: SONY CORPORATION

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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 September 15, 2000 and granted April 23, 2008. A European patent lasts at most 20 years from filing, so its term ended September 15, 2020.
  • 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 March 15, 2026.
  • 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.
FiledSeptember 15, 2000
PublishedMarch 21, 2001
GrantedApril 23, 2008
Term endedSeptember 15, 2020
Application numberEP 00120331
Classification (CPC)G11B7/0945 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedSep 15, 2000PublishedMarch 21, 2001Patent grantedApril 23, 2008Term endedSep 15, 2020

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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