It's a good thing Autodesk didn't lay off any of its lawyers, because it'll need to reassign a few of them to defend itself against Gary Odom, who claims to have a patent on how toolbars are handled (cf. Tool Group Manipulations).
In his claim for damages (for no "less than a reasonable royalty"), he specifically targets the ribbon interface Autodesk added to AutoCAD 2009. The ribbon interface was designed by Microsoft, and was unhappily imposed on the Rest of the World by the likes of SolidWorks, SpaceClaim, and Autodesk. Oden is also suing Microsoft.
Reading patents is a mind-twisting exercise, but it appear to me that his idea is to modify toolbars when the window is too small, so that the otherwise missing portion gets stacked underneath, or compressed (displays fewer icons).There are small arrows that indicate wrapping. (See figure below of the stacking and the icons, taken from the patent filing.)
Autodesk's implementation of the ribbon manually and automatically compresses and expands the ribbon. Small icons indicate when a panel is compressed vertically; the user clicks the icon to expand the panel. See figure below.
AutoCAD compresses and expands the ribbon horizontally automatically, depending on the width of the AutoCAD window and the number of open panels; the user can also open panels that are compressed horizontally.
Mr Oden's patent also includes a number of keystrokes for controlling toolbars, such as joining two bars and manually compressing or expanding toolbars. I don't know of any keystrokes that perform similar functions in AutoCAD; it's all mouse-driven.