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Expired European patentEurope

Circuit package for headphone

EP 1185136 B1 · Applicant: Sennheiser electronic GmbH & Co. KG

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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 August 11, 2001 and granted June 22, 2011. A European patent lasts at most 20 years from filing, so its term ended August 11, 2021.
  • 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.
FiledAugust 11, 2001
PublishedMarch 6, 2002
GrantedJune 22, 2011
Term endedAugust 11, 2021
Application numberEP 01119401
Classification (CPC)H04R1/1041

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedAug 11, 2001PublishedMarch 6, 2002Patent grantedJune 22, 2011Term endedAug 11, 2021

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.