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Expired European patentEurope

Catadioptric optical system and projection exposure apparatus equipped with the same

EP 1069448 B1 · Applicant: NIKON 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 July 13, 2000 and granted March 19, 2003. A European patent lasts at most 20 years from filing, so its term ended July 13, 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 January 13, 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.
FiledJuly 13, 2000
PublishedJanuary 17, 2001
GrantedMarch 19, 2003
Term endedJuly 13, 2020
Application numberEP 00305938
Classification (CPC)G03F7/70225 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedJuly 13, 2000PublishedJan 17, 2001Patent grantedMarch 19, 2003Term endedJuly 13, 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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