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Expired European patentEurope

Hearing aid with oscillation detector and method for detecting oscillations in a hearing aid

EP 1052881 B1 · Applicant: Siemens Audiologische Technik GmbH

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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 April 28, 2000 and granted October 20, 2010. A European patent lasts at most 20 years from filing, so its term ended April 28, 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 October 28, 2025.
  • 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.
FiledApril 28, 2000
PublishedNovember 15, 2000
GrantedOctober 20, 2010
Term endedApril 28, 2020
Application numberEP 00109229
Classification (CPC)H04R25/453

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedApril 28, 2000PublishedNov 15, 2000Patent grantedOct 20, 2010Term endedApril 28, 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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