"Hi, WebApps WG-, Please be advised that Apple has disclosed a patent [1][2] and excluded claims from the W3C Royalty-Free License commitment of the W3C Patent Policy [3], for the Widgets 1.0: Updates specification [4]. The W3C Team, in conjunction with the Chairs and Apple, are now following the procedures for launching and operating a Patent Advisory Group (PAG). [5] We will update this Working Group as more details unfold."
Source: http://lists.w3.org/Archives/Public/public-webapps/2009JanMar/0654.html


