Patents expert witnesses may opine on patent infringement, software patents, invention patents, and more. In A Guide to the Legislative History of the America Invents Act: Part I of II, Joe Matal, Judiciary Committee Counsel to Senator Jon Kyl, describes the Leahy-Smith America Invents Act and provides a guide to legislative materials.
Read more: http://www.uspto.gov/aia_implementation/guide-to-aia-p1.pdf