When is a brand name not a brand name?

Storage bin for "Bandaids", Vancouver General Hospital, Vancouver , BC

It happened to "refrigerator" and "escalator". Is it going to happen to "Bandaid"?

All three words were registered trademarks at one time, but the first two have become generic terms for the technology. Bandaid is fighting this, but I suspect that the battle will eventually be lost and "Bandaid"  will become bandaid.