Partner/Owner

Representative before the EPO

Employment test 11 - 50 employees
Company dna blumbach zinngrebe patent und rechtsanwalte gbr
operating since 1934
Headquarter in Wiesbaden, Berlin and 1 office
active in Legal Services and IP Consulting

Klaus Kampfenkel has worked on the following 2 EPO patent applications which have been published in the last five years:

EP14001540

Optical transmission network and optical network elements for transmitting WDM signals

IPC classification:
H04J 14/02
Applicant:
Deutsche Telekom AG
Agent:
Klaus Kampfenkel, Blumbach Zinngrebe Patent-und Rechtsanwälte GbR patentConsult
Status:
EXAMINATION REQUESTED
EP12001169

Method and telecommunications system for user login to a secure IPTV service

IPC classification:
H04L 29/06, H04N 21/254, H04N 21/258, H04N 21/61, H04N 21/643, H04W 12/06
Applicant:
Deutsche Telekom AG
Agent:
Klaus Kampfenkel, Blumbach Zinngrebe Patent-und Rechtsanwälte GbR patentConsult
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT

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