blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability

2022.02.11

More...
blank News flashes

News Flashes

New version of the European Patent Register – SPC proceedings information in the Unitary Patent Register.

2024-07-24

More...
blank Related links

Release notes
European Patent Register Assistant
European Patent Register Resource Book
European Patent Register – pocket guide
FAQ - European Patent Register
Federated Register (Flyer)
Global Dossier (Flyer)
Register events
Deep link coverage
Federated Register content
The Patent Information Tour
Fair use charter

Extract from the Register of European Patents

EP Event history: EP0023234


Date  Description European Patent Bulletin date, issue number
06.09.1984 No opposition filed within time limit published on  07.11.1984 [1984/45]
10.09.1983 (Expected) grant published on  09.11.1983 [1983/45]
16.06.1981 Request for examination filed published on  19.08.1981 [1981/33]
08.12.1980 Publication in section I.1 EP Bulletin published on  04.02.1981 [1981/05]