psa: who owns code written with Copilot

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

Looking for advice on a legal issue. Here's what happened.

who owns code written with Copilot. I've been dealing with this for about 16 months now and the situation isn't improving.

This involves software/code I developed over the past 28 months. I do have documentation proving my ownership and timeline.

What's the typical outcome in situations like this?

Illustrative response

Trademark registration takes 8-12 months right now. If you need immediate protection, common law trademark rights exist from the date you first use the mark in commerce. Registration just gives you additional benefits.