Earlier quoted context omitted.
No, but what is it? Not your lawyer, not legal advice, but it's not a trade secret, they've given it to researchers. It's not a trademark because it's not an origin identifier. The structure might be patentable, but the weights won't be. It's certainly not a mask work. It might have been a contract violation for the guy who redistributed it, but I'm not a party to that contract.
> It might have been a contract violation for the guy who redistributed it, but I'm not a party to that contract. Wouldn’t that violate the Nemo dat quod non habet legal principle and so you cannot hide behind the claim that you weren’t party to the contact? https://en.wikipedia.org/wiki/Nemo_dat_quod_non_habet
The contracts in these cases are somewhat similar to an NDA, without the secrecy aspect. Restricted disclosure of public information. You can agree to such a contract if you want to, and a court might even enforce it, but it doesn’t affect anybody else’s rights to distribute that information.
Contracts are not statutes, they only bind the people directly involved. To restrict the actions of random strangers, you need to get elected.