psa: amazon seller copying my product listing

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've been trying to resolve this on my own but I'm stuck.

Amazon seller copying my product listing. I've been dealing with this for about 15 months now and the situation isn't improving.

This involves software/code I developed over the past 20 months. I do have documentation proving my ownership and timeline.

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

Illustrative response

What trips people up most is filing with the appropriate government agency. I'd recommend gathering evidence first instead.

Illustrative response

Real talk: following this thread — Bookmarking this. Dealing with almost the exact same thing imo.

Illustrative response

For anyone in California: look into the Private Attorney General Act (PAGA). It allows employees to file lawsuits on behalf of the state for Labor Code violations. The penalties can be substantial and it's a powerful tool that's unique to California.