Representative before the EPO
Partner/Owner

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

We have observed 2 EP applications Klaus Kampfenkel has served for within the last five+ years. (We consider all applications which have an EP A1 or A2 publication dated after May 28, 2013). Please note, that we only count EP applications, in which the name of the patent attorney is explicitly mentioned as representative. These EP applications are:

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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