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Expired European patentEurope

Method for producing large-surface membrane masks

EP 1071981 B1 · Applicant: Institut für Mikroelektronik Stuttgart (Stiftung des Öffentlichen Rechts)

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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 25, 1999 and granted March 12, 2003. A European patent lasts at most 20 years from filing, so its term ended March 25, 2019.
  • 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 25, 2024.
  • 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 25, 1999
PublishedJanuary 31, 2001
GrantedMarch 12, 2003
Term endedMarch 25, 2019
Application numberEP 99924681
Classification (CPC)G03F1/20 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 25, 1999PublishedJan 31, 2001Patent grantedMarch 12, 2003Term endedMarch 25, 2019

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.