Ownership and Copyright of Examination Materials

The examination materials used in the USMLE are copyrighted. If you reproduce and/or distribute any examination materials, by any means, including memorizing and reconstructing them, without explicit written permission, you are in violation of the rights of the owners. In addition to actions described under Indeterminate Scores and Irregular Behavior, every legal means available to protect USMLE copyrighted materials and secure redress against those who violate copyright law may be pursued.

Sources: http://www.usmleworldwide.com/blog/?p=57