This has been discussed off nostr in context if GitCitadel since cryptographically signing stuff can and should put an end to nearly all IP BS.

I am exceedingly against all IP laws. They only help those who can afford lawyers.

But to your query, no. And I'm not sure their can be, though I can see some interesting possibilities for the future if nostr becomes ubiquitous enough that governments use it, in that if you want X protection or recognition of Y idea, you must publish something on Z relay.