Has anyone dealt with using AI to generate marketing copy?

I publish illustrative scenarios prepared by my practice. All participants and conversations are fictional. The fictional posts are not posts by real users, accounts of client experiences, or reports of actual results.
Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

I'm dealing with a situation and need some guidance.

using AI to generate marketing copy. I've been dealing with this for about 7 months now and the situation isn't improving.

This involves content I created over the past 6 months. I do not have documentation proving my ownership and timeline.

Do I have a strong case? What should my next steps be?