| Date | Description | European Patent Bulletin date, issue number |
|---|---|---|
| 22.09.2000 | No opposition filed within time limit | published on 08.11.2000 [2000/45] |
| 08.10.1999 | (Expected) grant | published on 24.11.1999 [1999/47] |
| 15.09.1999 | Communication of intention to grant a patent | |
| 22.05.1999 | Communication of intention to grant | |
| 22.05.1999 | Communication of intention to grant a patent | |
| 12.02.1999 | Communication of intention to grant | |
| 19.01.1999 | Renewal fee | |
| 21.12.1998 | Examination report or reply | |
| 13.11.1998 | First examination report | |
| 12.11.1998 | Examination report or reply | |
| 02.10.1998 | Request for examination filed | published on 18.11.1998 [1998/47] |
| 30.01.1998 | Publication of search report | published on 18.03.1998 [1998/12] |
| 23.05.1997 | Publication in section I.1 EP Bulletin | published on 09.07.1997 [1997/28] |