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EP0400362
European procedure
Extract from the Register of European Patents
EP About this file: EP0400362
| EP0400362 - Method for hierarchical key management with partial keys for transmitting digital information [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 04.10.1996 Database last updated on 26.06.2024 | Most recent event Tooltip | 26.04.2002 | Lapse of the patent in a contracting state New state(s): ES | published on 12.06.2002 [2002/24] | Applicant(s) | For all designated states SIEMENS AKTIENGESELLSCHAFT Werner-von-Siemens-Str. 1 DE-80333 München / DE | [N/P] |
| Former [1990/49] | For all designated states SIEMENS AKTIENGESELLSCHAFT Wittelsbacherplatz 2 D-80333 München / DE | Inventor(s) | 01 /
Leclerc, Matthias, Dr. Theresienstrasse 140 D-8000 München 2 / DE | [1990/49] | Application number, filing date | 90108665.2 | 08.05.1990 | [1990/49] | Priority number, date | DE19893917711 | 31.05.1989 Original published format: DE 3917711 | [1990/49] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0400362 | Date: | 05.12.1990 | Language: | DE | [1990/49] | Type: | A3 Search report | No.: | EP0400362 | Date: | 27.05.1992 | Language: | DE | [1992/22] | Type: | B1 Patent specification | No.: | EP0400362 | Date: | 29.11.1995 | Language: | DE | [1995/48] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 03.04.1992 | Classification | IPC: | H04L9/08 | [1990/49] | CPC: |
H04L9/0836 (EP)
| Designated contracting states | BE, DE, DK, ES, FR, GB, GR, IT, LU, NL [1991/05] |
| Former [1990/49] | AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE | Title | German: | Verfahren zur hierarchischen Schlüsselverwaltung mit Teilschlüsseln zur Übermittlung digitalisierter Information | [1990/49] | English: | Method for hierarchical key management with partial keys for transmitting digital information | [1990/49] | French: | Procédé d'administration hiérarchique de clés à clés partielles pour la transmission d'informations numériques | [1990/49] | Examination procedure | 09.06.1990 | Loss of particular rights, legal effect: designated state(s) | 03.09.1990 | Despatch of communication of loss of particular rights: designated state(s) AT, CH, SE | 05.12.1990 | Examination requested [1991/05] | 11.08.1994 | Despatch of a communication from the examining division (Time limit: M04) | 21.11.1994 | Reply to a communication from the examining division | 30.01.1995 | Despatch of communication of intention to grant (Approval: Yes) | 31.05.1995 | Communication of intention to grant the patent | 18.08.1995 | Fee for grant paid | 18.08.1995 | Fee for publishing/printing paid | Opposition(s) | 30.08.1996 | No opposition filed within time limit [1996/47] | Fees paid | Renewal fee | 21.05.1992 | Renewal fee patent year 03 | 19.05.1993 | Renewal fee patent year 04 | 19.05.1994 | Renewal fee patent year 05 | 18.05.1995 | Renewal fee patent year 06 | Penalty fee | Penalty fee Rule 85a EPC 1973 | 04.07.1990 | AT M01 Not yet paid | 04.07.1990 | CH M01 Not yet paid | 04.07.1990 | SE M01 Not yet paid |
| 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 Tooltip | DK | 29.11.1995 | ES | 29.11.1995 | GR | 29.11.1995 | LU | 31.05.1996 | [2002/24] |
| Former [2000/04] | DK | 29.11.1995 | |
| GR | 29.11.1995 | ||
| LU | 31.05.1996 | ||
| Former [1998/15] | DK | 29.11.1995 | Documents cited: | Search | [A]EP0281224 (HEWLETT PACKARD CO [US]) | [X] - PROCEEDINGS OF THE 1986 IEEE SYMPOSIUM ON SECURITY AND PRIVACY, 7-9 April 1986, pages 138 147, Washington DC, US; W.P. LU and M.K. SUNDARESHAN: "A Hierarchical Key Management Scheme For End-to-End Encryption In Internet Environments" |