Open Source License Compliance: reverse engineering software

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.

reverse engineering software. I've been dealing with this for about 12 weeks now and the situation isn't improving.

This involves software/code I developed over the past 30 months. I do have documentation proving my ownership and timeline.

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

Illustrative response

A cease and desist letter is usually the first step. Many situations resolve at that stage.

Illustrative response

Have you documented the creation date and your original work? That's key for any IP claim.

Illustrative response

Following - dealing with similar IP issues.