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EP0401971
European procedure
Extract from the Register of European Patents
EP About this file: EP0401971
| EP0401971 - Optical waveguide and method for its manufacture [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.01.1996 Database last updated on 19.10.2024 | Most recent event Tooltip | 24.01.2003 | Change - lapse in a contracting state Updated state(s): NL | published on 12.03.2003 [2003/11] | Applicant(s) | For all designated states Nortel Networks Corporation World Trade Center of Montreal 380 St. Antoine Street West 8th Floor Montreal Quebec H2Y 3Y4 / CA | [N/P] |
| Former [1994/22] | For all designated states NORTHERN TELECOM LIMITED World Trade Center of Montreal, 380 St. Antoine Street West 8th Floor Montreal, Quebec H2Y 3Y4 / CA | ||
| Former [1990/50] | For all designated states NORTHERN TELECOM LIMITED 600 de la Gauchetiere Street West Montreal Quebec H3B 4N7 / CA | Inventor(s) | 01 /
Kalnitsky, Alexander 6800 Arapaho Road, No. 2048/II Dallas, Texas 75248 / US | 02 /
Ellul, Joseph Paul 27 Burnbrook Crescent Nepean, Ontario K2H 9A6 / CA | 03 /
Boothroyd, Albert Roy 13 Erinlea Court Nepean, Ontario K2E 7C8 / CA | [1990/50] | Representative(s) | Laurence, Simon French, et al Nortel Networks Intellectual Property Law Group London Road Harlow Essex CM17 9NA / GB | [N/P] |
| Former [1995/08] | Laurence, Simon French, et al Nortel Limited Patents and Licensing West Road Harlow, Essex CM20 2SH / GB | ||
| Former [1991/36] | Laurence, Simon French Nortel Limited Patents and Licensing West Road Harlow, Essex CM20 2SH / GB | ||
| Former [1990/50] | Crawford, Andrew Birkby A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE / GB | Application number, filing date | 90304772.8 | 02.05.1990 | [1990/50] | Priority number, date | US19890363006 | 08.06.1989 Original published format: US 363006 | [1990/50] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0401971 | Date: | 12.12.1990 | Language: | EN | [1990/50] | Type: | A3 Search report | No.: | EP0401971 | Date: | 25.09.1991 | Language: | EN | [1991/39] | Type: | B1 Patent specification | No.: | EP0401971 | Date: | 08.03.1995 | Language: | EN | [1995/10] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 08.08.1991 | Classification | IPC: | G02B6/12 | [1990/50] | CPC: |
G02B6/1347 (EP,US)
| Designated contracting states | DE, FR, GB, NL, SE [1990/50] | Title | German: | Optischer Wellenleiter und Verfahren zur Herstellung | [1990/50] | English: | Optical waveguide and method for its manufacture | [1990/50] | French: | Guide d'onde optique et méthode de fabrication | [1990/50] | Examination procedure | 22.01.1992 | Examination requested [1992/13] | 12.07.1993 | Despatch of a communication from the examining division (Time limit: M04) | 05.11.1993 | Reply to a communication from the examining division | 10.03.1994 | Despatch of communication of intention to grant (Approval: Yes) | 18.08.1994 | Communication of intention to grant the patent | 05.09.1994 | Fee for grant paid | 05.09.1994 | Fee for publishing/printing paid | Opposition(s) | 09.12.1995 | No opposition filed within time limit [1996/09] | Fees paid | Renewal fee | 11.05.1992 | Renewal fee patent year 03 | 10.05.1993 | Renewal fee patent year 04 | 09.05.1994 | Renewal fee patent year 05 |
| 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 | NL | 08.03.1995 | SE | 08.06.1995 | [2003/11] |
| Former [2000/27] | NL | 31.05.1995 | |
| SE | 08.06.1995 | ||
| Former [1996/04] | SE | 08.06.1995 | Documents cited: | Search | [AD]EP0132206 (FAIRCHILD CAMERA INSTR CO [US]); | [A]US4521443 (NAIK ISHVERLAL K [US], et al) | [A] - SOLID STATE TECHNOLOGY. vol. 31, no. 11, November 1988, WASHINGTON US pages 83 - 88; F.S.HICKERNELL: 'Optical waveguides on silicon ' | Examination | US4849248 | JPH06323328 |