Expired European patentEurope
Communication system for interactive services with a packet switching interaction channel over a narrow-band circuit switching network, as well as a device for application in such a communication system
EP 1814352 B1 · Applicant: Koninklijke KPN N.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed September 9, 1996 and granted June 8, 2016. A European patent lasts at most 20 years from filing, so its term ended September 9, 2016.
- 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 March 9, 2022.
- 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.
FiledSeptember 9, 1996
PublishedAugust 1, 2007
GrantedJune 8, 2016
Term endedSeptember 9, 2016
Application numberEP 07006827
Classification (CPC)H04Q11/0478
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.