Well... AMD can just cite their presentation as prior art, and it will be struck down. If anything, Intel was foolish to waste money on bored lawyers.
https://www.justia.com/intellectual-property/patents/first-t...
AMD should have filed their own patents before talking about it publicly - that's how the game is now played.
If you don't - it's now possible for someone else to file a patent on your own invention.