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EP0171941
European procedure
Extract from the Register of European Patents
EP About this file: EP0171941
| EP0171941 - Weather resistant polyacetal resin composition [Right-click to bookmark this link] | Status | Patent revoked Status updated on 02.02.2001 Database last updated on 29.03.2025 | Most recent event Tooltip | 05.10.2005 | Change: Appeal number | Applicant(s) | For all designated states Polyplastics Co., Ltd. 18-1, Konan 2-chome, Minato-ku Tokyo 108-8280 / JP | [N/P] |
| Former [1986/08] | For all designated states POLYPLASTICS CO. LTD. 30, 2-chome Azuchi-machi Higashi-ku Osaka / JP | Inventor(s) | 01 /
Ikenaga, Yukio 324, Miyashita Fuji-shi Shizuoka / JP | 02 /
Yamawaki, Masami 94, Gokanjima Fuji-shi Shizuoka / JP | 03 /
Suzuki, Kunio 885, Miyajima Fuji-shi Shizuoka / JP | [1986/08] | Representative(s) | Livsey, Gilbert Charlesworth Norris, et al Barker Brettell 10-12 Priests Bridge London SW15 5JE / GB | [N/P] |
| Former [1986/08] | Livsey, Gilbert Charlesworth Norris, et al HYDE, HEIDE & O'DONNELL 10-12 Priest's Bridge London SW15 5JE / GB | Application number, filing date | 85305156.3 | 19.07.1985 | [1986/08] | Priority number, date | JP19840156563 | 27.07.1984 Original published format: JP 15656384 | [1986/08] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0171941 | Date: | 19.02.1986 | Language: | EN | [1986/08] | Type: | B1 Patent specification | No.: | EP0171941 | Date: | 21.03.1990 | Language: | EN | [1990/12] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 11.12.1985 | Classification | IPC: | C08K5/34, C08K5/13, C08L59/02 | [1986/08] | CPC: |
C08K5/3435 (EP,US);
C08K5/132 (EP,US);
C08K5/1345 (EP,US);
C08K5/3475 (EP,US)
| C-Set: |
C08K5/132, C08L59/02 (EP,US);
C08K5/1345, C08L59/02 (US,EP);
C08K5/3435, C08L59/02 (US,EP);
C08K5/3475, C08L59/02 (US,EP) | Designated contracting states | BE, DE, FR, GB, IT, NL [1986/08] | Title | German: | Witterungsbeständige Polyacetalharzzusammensetzung | [1986/08] | English: | Weather resistant polyacetal resin composition | [1986/08] | French: | Composition résistant aux intempéries à base d'une résine de polyacétal | [1986/08] | Examination procedure | 08.05.1986 | Examination requested [1986/30] | 27.03.1987 | Despatch of a communication from the examining division (Time limit: M06) | 28.09.1987 | Reply to a communication from the examining division | 29.04.1988 | Despatch of a communication from the examining division (Time limit: M06) | 27.10.1988 | Reply to a communication from the examining division | 09.01.1989 | Despatch of a communication from the examining division (Time limit: M02) | 13.03.1989 | Reply to a communication from the examining division | 14.06.1989 | Despatch of communication of intention to grant (Approval: Yes) | 29.08.1989 | Communication of intention to grant the patent | 13.11.1989 | Fee for grant paid | 13.11.1989 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
18.12.1990
08.01.1991
ADMISSIBLE Ciba Spezialitätenchemie Holding AG Klybeckstrasse 141 Postfach 4002 Basel / CH | 02
21.12.1990
08.01.1991
ADMISSIBLE E.I. DU PONT DE NEMOURS AND COMPANY 1007 Market Street Wilmington DE 19898 / US Opponent's representative Abitz, Walter Patentanwälte Abitz & Partner Postfach 86 01 09 81628 München / DE | [N/P] |
| Former [1997/15] | |||
| Opponent(s) | 01
18.12.1990
08.01.1991
ADMISSIBLE Ciba Specialty Chemicals Holding Inc. Klybeckstrasse 141 4057 Basel / CH | ||
| 02
21.12.1990
08.01.1991
ADMISSIBLE E.I. Du Pont de Nemours and Company 1007 Market Street Wilmington, Del. 19898 / US Opponent's representative Abitz, Walter, Dr.-Ing. Patentanwälte Abitz & Partner Postfach 86 01 09 D-81628 München / DE | |||
| Former [1991/09] | |||
| Opponent(s) | 01
18.12.1990
08.01.1991
ADMISSIBLE CIBA-GEIGY AG Patentabteilung Postfach CH-4002 Basel / CH | ||
| 02
21.12.1990
08.01.1991
ADMISSIBLE E.I. Du Pont de Nemours and Company 1007 Market Street Wilmington, Del. 19898 / US Opponent's representative Abitz, Walter, Dr.-Ing. Patentanwälte Abitz & Partner Postfach 86 01 09 D-81628 München / DE | 25.01.1991 | Invitation to proprietor to file observations on the notice of opposition | 25.07.1991 | Reply of patent proprietor to notice(s) of opposition | 26.03.1992 | Communication of observations of patent proprietor (Time limit: M02) | 14.05.1992 | Reply of parties involved to observations of patent proprietor | 21.12.1992 | Despatch of a communication from the opposition division (Time limit: M04) | 20.04.1993 | Reply to a communication from the opposition division | 17.06.1993 | Despatch of a communication from the opposition division (Time limit: M04) | 19.10.1993 | Reply to a communication from the opposition division | 18.11.1993 | Despatch of a communication from the opposition division (Time limit: M02) | 01.06.1994 | Reply to a communication from the opposition division | 24.03.1998 | Despatch of a communication from the opposition division (Time limit: M06) | 17.09.1998 | Reply to a communication from the opposition division | 27.07.1999 | Date of oral proceedings | 16.09.1999 | Despatch of minutes of oral proceedings | 16.09.1999 | Despatch of communication that the patent will be revoked | 26.09.1999 | Legal effect of revocation of patent [2001/12] | Appeal following opposition | 08.11.1994 | Appeal received No. T0882/94 | 11.01.1995 | Statement of grounds filed | 07.08.1997 | Result of appeal procedure: continuation of opposition procedure | 07.08.1997 | Date of oral proceedings | 18.08.1997 | Minutes of the oral proceedings despatched | Fees paid | Renewal fee | 21.07.1987 | Renewal fee patent year 03 | 23.06.1988 | Renewal fee patent year 04 | 11.07.1989 | Renewal fee patent year 05 |
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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 Tooltip | BE | 31.07.1991 | NL | 01.02.1992 | [1992/37] |
| Former [1992/27] | NL | 01.02.1992 | Documents cited: | Search | [X]EP0112726 (CELANESE CORP [US]) |