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Expired European patentEurope

Process for producing an image using a first minimum bottom antireflective coating composition

EP 1845415 B1 · Applicant: AZ Electronic Materials USA Corp.

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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 January 3, 2003 and granted April 30, 2014. A European patent lasts at most 20 years from filing, so its term ended January 3, 2023.
  • 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.
FiledJanuary 3, 2003
PublishedOctober 17, 2007
GrantedApril 30, 2014
Term endedJanuary 3, 2023
Application numberEP 07009942
Classification (CPC)G03F7/091 +1 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedJan 3, 2003PublishedOct 17, 2007Patent grantedApril 30, 2014Term endedJan 3, 2023

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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