Well it depends. When the door opened, did it cross the line into the other parking space? If so, then the person who opened the door is At Fault. If the door was open before they got into their car to back out, then they would be aware of it (therefor would wait until the door is closed before backing out). If they got into their car and then the person opens their door next to them, how can the driver be aware of that when they are focusing on the back of their car as they back out (most people turn around and look behind the car so they don't run a person over - not check for open doors).
no matter where a vehicle is parked, the moving vehicle is at fault every time.
the person pulling out
Unless thare are other than normal circumstances, the driver of the parked vehicle would be at fault as it is his duty to ensure that it is safe to join the carriageway...
The car pulling from the parking space is at fault
You are at fault.
Usually their is no fault associated with parking lots. I'm sure your insurance company looks at it as your fault.
If a vehicle is pulling into roadway from driveway, the vehicle pulling out is at fault.
If you hit another vehicle then you are at fault. It does not matter what you were doing at the time.
if you hit a stationary object - you will most likely be found at fault
It is your fault.
The vehicle exiting the parking space that did not yield to oncoming traffic.
A vehicle traveling in a parking lot has established use of the lane and the right of way. A vehicle in a parking space and backing into the lane must yield to oncoming traffic. Therefore, if a vehicle is backing out of a parking space and pulls into the path of an oncoming vehicle that has already established the lane, the vehicle backing would be at fault for the accident. However, if the vehicle which established use of the lane had an opportunity to avoid hitting the vehicle backing out of the space and failed to do so, there could be comparative negligence on both vehicles or on the one who had the opportunity to avoid the accident.