I want to create a product and I want to know how I can get a patent for it.
Also I want to know this:
Some technologies are already patented.
Lets say I will do a doorbell system Smart doorbell.
I want to send a push notification or a message to the user when someone rings the bell. Somebody has already got the patent. So do I need to get permission from the user that I will use their patent in for my product.