Legal DD – IP Investigation

As someone who recently went through managing IP research as part of a rebrand (combined with an M&A), I became familiar with some of the reports legal firms might use to confirm global patent & trademark rights. One report our firm utilized was Thompson & Reuters report which contained a global search within all jurisdictions and managing bodies (ex. USPTO, EPO, etc.).

Are there other reports your legal counsel utilizes? Just trying to understand for future reference.

Thanks!
Stacey