incapacitate father

You don't have someone sectioned* because you think they will enjoy it; you have them sectioned because they need it. Same with petitioning a court to give you some kind of power/decision making capacity for someone.

*incapacitate is probably not the best translation -- if you say you incapacitated someone it tends to mean you shot them with a paralysis dart or punched them in such a way that they can not move for a while.

I don't know the German regs but if it is as you say** I would be surprised if you were unable to have him held in some kind of psychiatric facility, possibly even involuntarily.

**some alcoholics move on to not eating solid food any more, it is certainly not good but it is not the same as dementia patients or something not eating. Not being able to stand up can also just be being drunk and collapsing is much the same. All absolutely things to be very concerned about but depending upon the regs and how coherent he is he may be able to explain it away, though again I don't know German regulations on the matter (most systems there are pretty good but I have been surprised in the past). I should also say he may have progressed to alcohol dependency and while it is possible to come back it is a very long and very hard road, even the initial detox is going to be horrific to see.

If you are going to go before a court then I would advise being a bit prepared. Have your uncle have a statement detailing the things he has seen, even if the social workers are turned away get their statement that that happened, if the police have been involved... Try and find a data pack on what the courts will want to see for this as it can be subtly different between places and if you can demonstrate things using their criteria then that is a good option to have.

Hope you get it sorted.

My grandfather is in the same situation, just replace the alcohol with Cigarettes. I'm very sorry that your family is in this position my friend, its not an easy one. just do some research talk to your lawyer. Follow the advice @FAST6191 has provided.

I thought the translation sounded weird but google only gave me 2 options and both sounded wrong ^^V

In Germany there is no way to get anyone into a psychatric facility out of their own free will except if you are the "guardian?" so if he doesn't accept the help of the social workers going to him next week I can either let him die or go to court

I would advice you do anything you can to try help him, sure it may not work in the long run but at least you wont have regrets for not doing enough, I think one of the most important things for someone to help rid themselves of such an addiction is to develop new interests or re-kindle past ones, i.e if he used to be a mechanic get a fixer upper for him to try focus his efforts on

it be hard and at times you will feel like its pointless even trying but you just gotta stick to it and do what you can, good luck and hope everything gets sorted out

PS, don't think these "closed" facilities can "fix" him, in the uk at least they only put people in them until they are sober enough to leave, then offer support after the fact, if your dad isn't ready to take the support he will slip right back to drink, which is why I said its important he gets a new passion to throw himself into rather than drinking