Some of these patents are from 15 years ago and cover OS-level behavior, so it's hard to see how they can relate only to HTC's implementation of Android and not Google's OS as a whole. Yeah, it's wild, and while we're not going to blow out all 20 patents to sort out what they mean -- not yet, anyway -- we can certainly walk through the claims. Let's see what we've got.

* Patent No. 7,362,331: "Time-Based, Non-Constant Translation Of User Interface Objects Between States"
* Patent No. 7,479,949: "Touch Screen Device, Method, And Graphical User Interface For Determining Commands By Applying Heuristics"
* Patent No. 7,657,849: "Unlocking A Device By Performing Gestures On An Unlock Image"
* Patent No. 7,469,381: "List Scrolling And Document Translation, Scaling, And Rotation On A Touch-Screen Display"
* Patent No. 5,920,726: "System And Method For Managing Power Conditions Within A Digital Camera Device."
* Patent No. 7,633,076: "Automated Response To And Sensing Of User Activity In Portable Devices"
* Patent No. 5,848,105: "GMSK Signal Processors For Improved Communications Capacity And Quality"
* Patent No. 7,383,453: "Conserving Power By Reducing Voltage Supplied To An Instruction-Processing Portion Of A Processor"
* Patent No. 5,455,599: "Object-Oriented Graphic System"
* Patent No. 6,424,354: "Object-Oriented Event Notification System With Listener Registration Of Both Interests And Methods"

source: engadget