“We can sit by and watch competitors steal our patented inventions, or we can do something about it. We’ve decided to do something about it. We think competition is healthy, but competitors should create their own original technology, not steal ours.” -Steve Jobs

Apple® today filed a lawsuit against HTC for infringing on 20 Apple patents related to the iPhone’s user interface, underlying architecture and hardware. The lawsuit was filed concurrently with the U.S. International Trade Commission (ITC) and in U.S. District Court in Delaware.

"We can sit by and watch competitors steal our patented inventions, or we can do something about it. We’ve decided to do something about it,” said Steve Jobs, Apple’s CEO. “We think competition is healthy, but competitors should create their own original technology, not steal ours.”

Apple reinvented the mobile phone in 2007 with its revolutionary iPhone®, and did it again in 2008 with its pioneering App Store, which now offers more than 150,000 mobile applications in over 90 countries. Over 40 million iPhones have been sold worldwide.

Source

Patents in question

I'll personally comment later cause I'm late for work.

I only have one question though. How the hell is it possible for Apple to patent something (specifically Patent #7,633,076: Automated Response To And Sensing Of User Activity In Portable Devices) in 2009, which existed on HTC devices since 2008?