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Expired European patentEurope

Bifocal intraocular lens with spherical aberration correction

EP 0578739 B1 · Applicant: ALCON SURGICAL, INC.,

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Overview

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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 March 16, 1992 and granted December 23, 1998. A European patent lasts at most 20 years from filing, so its term ended March 16, 2012.
  • 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 September 16, 2017.
  • 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.
FiledMarch 16, 1992
PublishedJanuary 19, 1994
GrantedDecember 23, 1998
Term endedMarch 16, 2012
Application numberEP 92909909
Classification (CPC)A61F2/1637 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMarch 16, 1992PublishedJan 19, 1994Patent grantedDec 23, 1998Term endedMarch 16, 2012

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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