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Extract from the Register of European Patents

EP About this file: EP0635956

EP0635956 - Encryption apparatus, communication system using the same and method therefor [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  27.08.2004
Database last updated on 21.08.2024
Most recent event   Tooltip28.12.2007Lapse of the patent in a contracting state
New state(s): IT, PT		published on 30.01.2008  [2008/05]
Applicant(s)For all designated states
CANON KABUSHIKI KAISHA
30-2, 3-chome, Shimomaruko, Ohta-ku
Tokyo / JP
[N/P]
Former [1995/04]For all designated states
CANON KABUSHIKI KAISHA
30-2, 3-chome, Shimomaruko, Ohta-ku
Tokyo / JP
Inventor(s)01 / Iwamura, Keiichi, c/o Canon Kabushiki Kaisha
30-2, 3-chome, Shimomaruko
Ohta-ku, Tokyo / JP
02 / Yamamoto, Takahisa, c/o Canon Kabushiki Kaisha
30-2, 3-chome, Shimomaruko
Ohta-ku, Tokyo / JP
[1995/04]
Representative(s)Beresford, Keith Denis Lewis, et al
Beresford Crump LLP
16 High Holborn
London WC1V 6BX / GB
[N/P]
Former [1995/04]Beresford, Keith Denis Lewis, et al
BERESFORD & Co. 2-5 Warwick Court High Holborn
London WC1R 5DJ / GB
Application number, filing date94305221.715.07.1994
[1995/04]
Priority number, dateJP1993017923220.07.1993         Original published format: JP 17923293
JP1993017924120.07.1993         Original published format: JP 17924193
[1995/04]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0635956
Date:25.01.1995
Language:EN
[1995/04]
Type: A3 Search report 
No.:EP0635956
Date:06.12.1995
Language:EN
[1995/49]
Type: B1 Patent specification 
No.:EP0635956
Date:22.10.2003
Language:EN
[2003/43]
Search report(s)(Supplementary) European search report - dispatched on:EP18.10.1995
ClassificationIPC:H04L9/22
[1995/04]
CPC:
H04L9/0668 (EP,US); H04L2209/12 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   NL,   PT,   SE [1995/04]
TitleGerman:Verfahren und Kommunikationssystem unter Verwendung einer Verschlüsselungseinrichtung[1995/04]
English:Encryption apparatus, communication system using the same and method therefor[1995/04]
French:Procédé et système de communication utilisant un dispositif cryptographique[1995/04]
Examination procedure17.04.1996Examination requested  [1996/24]
20.05.1996Despatch of a communication from the examining division (Time limit: M06)
24.03.1997Reply to a communication from the examining division
11.02.1998Despatch of a communication from the examining division (Time limit: M06)
21.08.1998Reply to a communication from the examining division
06.05.1999Despatch of a communication from the examining division (Time limit: M06)
20.12.1999Reply to a communication from the examining division
10.07.2000Despatch of a communication from the examining division (Time limit: M06)
28.02.2001Reply to a communication from the examining division
03.12.2001Despatch of a communication from the examining division (Time limit: M04)
04.04.2002Reply to a communication from the examining division
12.06.2002Despatch of communication of intention to grant (Approval: Yes)
14.01.2003Communication of intention to grant the patent
27.03.2003Fee for grant paid
27.03.2003Fee for publishing/printing paid
Opposition(s)23.07.2004No opposition filed within time limit [2004/42]
Request for further processing for:28.02.2001Request for further processing filed
28.02.2001Full payment received (date of receipt of payment)
Request deemed not to be filed
12.03.2001Decision despatched
20.12.1999Request for further processing filed
20.12.1999Full payment received (date of receipt of payment)
Request granted
30.03.2000Decision despatched
24.03.1997Request for further processing filed
24.03.1997Full payment received (date of receipt of payment)
Request deemed not to be filed
15.04.1997Decision despatched
Fees paidRenewal fee
24.07.1996Renewal fee patent year 03
23.07.1997Renewal fee patent year 04
23.07.1998Renewal fee patent year 05
21.07.1999Renewal fee patent year 06
18.07.2000Renewal fee patent year 07
23.07.2001Renewal fee patent year 08
19.07.2002Renewal fee patent year 09
23.07.2003Renewal fee patent year 10
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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  TooltipAT22.10.2003
BE22.10.2003
CH22.10.2003
ES22.10.2003
IT22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
PT22.03.2004
IE15.07.2004
LU15.07.2004
[2008/05]
Former [2007/16]AT22.10.2003
BE22.10.2003
CH22.10.2003
ES22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
IE15.07.2004
LU15.07.2004
Former [2005/46]AT22.10.2003
BE22.10.2003
CH22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
IE15.07.2004
LU15.07.2004
Former [2005/23]AT22.10.2003
BE22.10.2003
CH22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
LU15.07.2004
Former [2004/52]AT22.10.2003
BE22.10.2003
CH22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
Former [2004/41]AT22.10.2003
CH22.10.2003
LI22.10.2003
NL22.10.2003
DK22.01.2004
GR22.01.2004
SE22.01.2004
Former [2004/33]AT22.10.2003
CH22.10.2003
LI22.10.2003
NL22.10.2003
GR22.01.2004
SE22.01.2004
Former [2004/31]AT22.10.2003
SE22.01.2004
Former [2004/24]SE22.01.2004
Documents cited:Search[A]DE1549067  (SIEMENS AG) [A] 5* page 6, line 3 - line 16 *;
 [A]DE2706421  (LICENTIA GMBH) [A] 1,3 * column 3, line 61 - column 4, line 60 *;
 [YA]US4369434  (MUELLER KURT H [CH]) [Y] 1,2,12,14,17 * column 1, line 43 - line 51 * * column 3, line 36 - line 45 * * column 4, line 21 - line 28 * [A] 3;
 [XY]US4860353  (BROWN DAVID S [US]) [X] 1,12,13,17-19 * column 1, line 11 - line 23 * * sentence 38 - sentence 41 * * column 2, line 13 - line 19 * * column 3, line 20 - column 4, line 2 * * column 5, line 44 - column 6, line 35 * * column 7, line 62 - column 8, line 10 * [Y] 1,2,12,14,17;
 [A]US5073935  (PASTOR JOSE [US]) [A] 1 * column A * * column 2, line 48 - column 3, line 38 *
 [DA]  - B. CHOR ET AL., "RSA/Rabin least significant bits are 1/2 + 1/poly (log N) secure", PROCEEDINGS OF CRYPTO '84, NEW YORK, (1984), pages 303 - 313 [DA] 9 * abstract *
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.