We are building a project of technology transfer.
In the project, one partner is a university XXX; the main contact person who will work with us is a professor. Previously, the professor and his team at University XXX carried out a research project and had some interesting results (abbreviated as RRR), which were all publicly published with articles and open-source software (permissive MIT expat license). In the envisioned project, we are going to combine their results and our previous results, and advance them together.
In the envisioned project, a startup YYY will be the sole company that undertakes the commercial exploitation.
So my question is, do we need any official agreements from University XXX to say that they grant the startup YYY access to the previous research results RRR including IPR for the purpose of future commercial exploitation?