Thank you for your reply.
Wow, yes, if this was the case, then this would fall under product liability law, for which the manufacturer is strictly liable for all damages caused.
Because there was an injury, the manufacturer is liable for the cost of the cabinet PLUS all medical bills and pain and suffering of your father. Thus, you need to start by carefully photographing the cabinet from all angles making sure the photographs are very clear.
Second, you need to get a local cabinet maker to examine the cabinet and write a report on how it was defective (manufacturing or even a design defect) specifically.
Once you have done this, you need to determine the amount of the damages. Add up all of your dad's bills from his injury (including what insurance paid) and any loss of work or other expenses directly related to the injury, that is his medical claim, then his pain and suffering on top of that would be about 1-3 times the amount of his medical claims (ask for 3 x his medical costs so you have bargaining room), then add in the costs of the cabinet and damage done to the wall.
You would then write a letter to the manufacturer making a demand for damages. You would describe the defect, what happened, include a copy of the written report from the cabinet maker and also photographs in your letter. Then itemize the damages in your letter and demand the manufacturer pay them and tell them they are by law strictly liable for those damages.
They are in all likelihood going to negotiate a settlement on this with you, but if they refuse, you would then move to sue them under product liability law for your father's damages.
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