[blinkingled]

I don't think you can mention Android borrowing from iPhone while ignoring that iPhone borrows from Android too - iOS 5 notifications being the prime example.

All complicated systems borrow from each other - there is nothing evil about it - it's just evolution.

[Caballera]

Can you show us the patents Google has on notifications?

[blinkingled]

Let's first try to understand what is implied by your question. Is it that unless an idea is patented it does not qualify as innovation and in that case if someone else copies it, it becomes acceptable?