Once you do pass the exam there is an Autodesk supplied logo. I believe there is now something called an Autodesk Inventor User exam in addition to the Expert exam, but I am not familiar with the new designation.
http://www.inventor-experts.com/aicepperson.php?id=60
-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional