| Meeting code | MM/A/XXI |
| Date and venue | September 25 to October 4, 1989 (Geneva, Switzerland) Onsite |
| Other related / parallel meetings | AB/XX |
| Previous / future meetings | MM/A/XX >> MM/A/XXI >> MM/A/XXII |
| Topic(s) | Special Union for the International Registration of Marks (Madrid Union): Assembly |