If Apple develops a new technology that revolutionises its iPhones, what type of intellectual property can they use to stop others from copying their invention? 

Geographical indications. 

Trademarks. 

Copyright. 

Patents. 

Registered designs. 

The intellectual property that Apple can use to stop others from copying their invention would be patents. Patents provide legal protection for new inventions and grant exclusive rights to the inventor, allowing them to prevent others from making, using, or selling the invention without permission.