Well, this is about as surprising as the tides rolling in: HTC has sued Apple for patent infringement. Earlier this year, Apple sued HTC, focussing on the Taiwanese phone maker's Android devices. HTC has now responded with a patent suit of its own.
As usual, the complaint is filed with the US International Trade Commission, and HTC asks the ITC to ban US import of the iPhone, iPad, and iPod. HTC lists five patents, such as "Method for Power Management of a Smart Phone", "Telephone Dialer with Easy Access Memory", and "Power Control Methods for a Portable Electronic Device". Yeah, they sound just as vague and idiotic to me as most other patents these phone makers are throwing at each other. Engadget has more on the patents.