Since you are familiar with the legal position in Italy it would be very difficult to argue with your comments but for clarity sake are you saying that since the incident of the OP having funds confiscated dates back to over 4 years there cannot be a claim made now?
As it stands now, if you are correct by the law, you may have 6 months for first verdict and tops 2 years for final decision after 2 appeals if you win the first one. If you don't open one, I am sorry to say but I don't see any way you are entitled to any claims.. And do not judge the italian authorities for being slow, they may be slow, but they do their jobs. In the case of crowdfundings of over 100k$ they do more checks than the pope.