OpenAI published about their very general language-writing & comprehension model (a) today.
Interestingly, they're not releasing the model itself:
Due to concerns about large language models being used to generate deceptive, biased, or abusive language at scale, we are only releasing a much smaller version of GPT-2 along with sampling code. We are not releasing the dataset, training code, or GPT-2 model weights.
Does OpenAI hold a copyright for this model (and its other intellectual property)?
If the US government decided they wanted to requisition this model, would an OpenAI copyright defend against that? Would OpenAI have any real recourse against a government requisition?
The "requisition" question isn't well formed. The US Government has various powers to demand various specific information from various specific people via various specific processes in various specific circumstances for various specific purposes, mostly but not all to do with law enforcement. I guess one or more of those could somehow apply, although the only one I can think of is a general Congressional fact-finding power.
The US Government has no general power to "requisition" anything from anybody. That's just not a thing at all. "Requisition" doesn't mean anything here.
However, if the US Government asked for it, I suspect OpenAI would be happy to hand it over voluntarily. They'd probably also give it to anybody else they thought of as "reputable". What would make you think that they'd want to resist such a request to begin with?
Haven't read it yet, but here's an academic review of "Federal Patent Takings," which seems relevant.