Here's Avery Lee's response: "I do not know of an actual instance in which the ASF patent was enforced. What happened was that I received a phone call from member of the Windows Media team informing me that my ASF code was illegal, despite being constructed from scratch via data reverse engineering. I never received a formal notice from Microsoft Legal, and my requests for specifices went unanswered. Once someone uncovered the patent, however, it was a moot point. The patent is *snip*"
(I've edited out some specifics on the patent, to avoid spreading liability; if anyone wants the original, unedited message, mail me and I'll forward it in private.) -- Glenn Maynard