A good notice identifies your rights (registrations, use history), the infringing conduct, and clear demands with a deadline — stop use, withdraw applications, destroy stock, sometimes account for profits. It is negotiation with a court date visible behind it.
Why it works — and when it does not
- Most small infringers fold: rebranding is cheaper than litigating a losing hand.
- It builds the record: continued infringement after notice looks wilful to a court.
- It fails against well-advised opponents who believe your rights are weak — which is why the letter must only claim what you can prove.