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Extract from the Register of European Patents

EP About this file: EP1286494

EP1286494 - Method for generating an asymmetric cryptographic group-key pair [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  05.01.2007
Database last updated on 02.11.2024
Most recent event   Tooltip12.12.2008Lapse of the patent in a contracting state
New state(s): CY		published on 14.01.2009  [2009/03]
Applicant(s)For all designated states
Deutsche Telekom AG
Friedrich-Ebert-Allee 140
53113 Bonn / DE
[2003/09]
Inventor(s)01 / Martin, Tobias
Spitzengärten 1
35466 Rabenau / DE
02 / Schwenk, Jörg, Dr.
Vereinsstrasse 10
91239 Henfenfeld / DE
 [2003/09]
Representative(s)(deleted)
[2005/48]
Former [2004/14]Puschmann, Heinz H., Dipl.-Ing.(FH), et al
Puschmann & Borchert, Patentanwälte, European Patent Attorneys, Postfach 10 12 31
80086 München / DE
Application number, filing date02017506.306.08.2002
[2003/09]
Priority number, dateDE200114139623.08.2001         Original published format: DE 10141396
[2003/09]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP1286494
Date:26.02.2003
Language:DE
[2003/09]
Type: B1 Patent specification 
No.:EP1286494
Date:01.03.2006
Language:DE
[2006/09]
Search report(s)(Supplementary) European search report - dispatched on:EP27.11.2002
ClassificationIPC:H04L9/08
[2003/09]
CPC:
H04L9/0841 (EP)
Designated contracting statesAT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   MC,   NL,   PT,   SE,   SK,   TR [2003/09]
TitleGerman:Verfahren zur Erzeugung eines asymmetrischen kryptografischen Gruppenschlüsselpaares[2003/09]
English:Method for generating an asymmetric cryptographic group-key pair[2003/09]
French:Méthode de génération d'une paire de clés cryptographiques asymétriques de groupe[2003/09]
Examination procedure26.08.2003Examination requested  [2003/44]
02.10.2003Despatch of a communication from the examining division (Time limit: M06)
19.02.2004Reply to a communication from the examining division
27.08.2004Despatch of a communication from the examining division (Time limit: M04)
22.12.2004Reply to a communication from the examining division
11.08.2005Communication of intention to grant the patent
21.12.2005Fee for grant paid
21.12.2005Fee for publishing/printing paid
Opposition(s)04.12.2006No opposition filed within time limit [2007/06]
Fees paidRenewal fee
31.08.2004Renewal fee patent year 03
31.08.2005Renewal fee patent year 04
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipCY01.03.2006
CZ01.03.2006
EE01.03.2006
FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
TR01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
GR02.06.2006
ES12.06.2006
PT01.08.2006
LU06.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
[2009/03]
Former [2008/37]CZ01.03.2006
EE01.03.2006
FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
TR01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
GR02.06.2006
ES12.06.2006
PT01.08.2006
LU06.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2008/28]CZ01.03.2006
EE01.03.2006
FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
GR02.06.2006
ES12.06.2006
PT01.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2008/22]CZ01.03.2006
FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
GR02.06.2006
ES12.06.2006
PT01.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2008/20]FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
GR02.06.2006
ES12.06.2006
PT01.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2007/38]FI01.03.2006
IE01.03.2006
IT01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
ES12.06.2006
PT01.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2007/30]FI01.03.2006
IE01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
ES12.06.2006
PT01.08.2006
BE31.08.2006
CH31.08.2006
LI31.08.2006
MC31.08.2006
Former [2007/19]FI01.03.2006
IE01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
ES12.06.2006
PT01.08.2006
MC31.08.2006
Former [2007/10]FI01.03.2006
IE01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
DK01.06.2006
SE01.06.2006
ES12.06.2006
PT01.08.2006
Former [2007/03]FI01.03.2006
IE01.03.2006
NL01.03.2006
SK01.03.2006
BG01.06.2006
SE01.06.2006
ES12.06.2006
Former [2006/48]FI01.03.2006
IE01.03.2006
NL01.03.2006
BG01.06.2006
SE01.06.2006
ES12.06.2006
Former [2006/45]FI01.03.2006
NL01.03.2006
SE01.06.2006
ES12.06.2006
Former [2006/36]FI01.03.2006
ES12.06.2006
Former [2006/34]ES12.06.2006
Documents cited:Search[A]WO0106697  (CERTICOM CORP [CA], et al) [A] 1-14 * page 3, line 18 - page 5, line 30 *;
 [A]DE19938198  (DEUTSCHE TELEKOM AG [DE]) [A] 1-14 * ganzes Dokument *;
 [X]  - ATENIESE G ET AL, NEW MULTIPARTY AUTHENTICATION SERVICES AND KEY AGREEMENT PROTOCOLS, IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE INC. NEW YORK, US, VOL. 18, NR. 4, PAGE(S) 628-639, (20000404), ISSN 0733-8716, XP000927584 [X] 1-14 * page 631, paragraph VI - page 632, paragraph A * * page 637, paragraph C *

DOI:   http://dx.doi.org/10.1109/49.839937
 [A]  - BOYD C ET AL, DESIGN AND ANALYSIS OF KEY EXCHANGE PROTOCOLS VIA SECURE CHANNEL IDENTIFICATION, UK, ADVANCES IN CRYPTOLOGY - ASIACRYPT '94. 4TH. INTERNATIONAL CONFERENCE ON THE THEORY AND APPLICATIONS OF CRYPTOLOGY, WOLLONGONG, AUSTRALIA, NOV. 28 - DEC. 1, 1994. PROCEEDINGS, PROCEEDINGS OF THE CONFERENCE ON THE THEORY AND APPLICATIONS OF CRYPTOLOGY, (19941128), ISBN 3-540-59339-X, XP000527595 [A] 1-14 * ganzes Dokument *
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.