In Autodesk 3ds Max Design 2012, you can use the SAT format to share files with Autodesk Inventor. This tutorial shows how to do so.
3ds Max Design can import the Inventor part (IPT) and assembly (IAM) file formats. However, there are some disadvantages to this method; in particular:
Using the SAT format solves both these problems: You can import the SAT file into 3ds Max Design on a system that doesn’t have Inventor Server installed, and you can edit the model in 3ds Max Design, then import the modified SAT model back into Inventor.
This tutorial uses a small part model to demonstrate these features.