Does this imply that distributing open-weights models such as Llama is copyright infringement, since users can trivially run the model without output filtering to extract the memorized text?
[1]: https://storage.courtlistener.com/recap/gov.uscourts.cand.43...
No, it doesn't. The order assumes that because it is an order on summary judgement, and the legal standard for such an order is that it must assume the least favorable position for the party for whom summart judgement is granted on every material contested issue of fact. Since it is a ruling for the defendant (Anthropic), it must be what the judge finds law demands when assuming all contested issues of fact are resolved in favor of the claims of the plaintiffs (the authors).
> but rules that this doesn't violate the author's copyright because Anthropic has server-side filtering to avoid reproducing memorized text.
No, it doesn't do that, either. It simply notes for clarity that the plaintiffs do not allege that that an infringement is created by the outputs for the reason you describe; the ruling does not in any way suggest that has any bearing on its findings as regards whether training the model infringes, it simply points out that that separate potential source of infringement is not at issue.
> Does this imply that distributing open-weights models such as Llama is copyright infringemen
No, it does not. At most, it implies, given the reason that rhe plaintiffs have not done so in this case, that the same plaintiffs might have alleged (without commenting at all as to whether they would prevail) that providing a hosted online service without filtering would constitute contributory infringement if that was what Anthropic did (which it isn’t) and if there was actual infringement committed by the users of the service.