Although the exclusive rights to the software as well as to other copyrightable works originally belong to the authors, every time you need to take legal actions with your software, you need to have proof of your exclusive rights.
This is necessary, for example:
- If the software is used in materials in a court case.
- If you are selling the software.
- If your company is facing M&A and you need to evaluate and account for the software in intangible assets.