In germany, there is no fair use exception to copyright. Also, there is no IP most software principles: e.g. writing a specific loop, that even an (weak) AI could suggest, would probably be too simple to be protected.

What could be valid is a right to not mimic collections, but that would mean you cannot clone the Copilot, as input is mapped to a non-trivial collection of outputs.

Disclaimer: IANAL, but I do dabble in IT-law.