[Thane_Banquo]

"We're not saying we own those two chords, individually - that would be ridiculous. We're just saying that in that specific order, people have grown to associate E, F with our music."

Get a clue, Lars. You can't copyright a chord progression.

[Doctor Stochastic]

Guido's estate may sue over a whole gamut of notes.

[Last Visible Dog]

Get a clue, Lars. You can't copyright a chord progression.

I am not even sure two chords rates as a "progression"

It clearly states in the Rock and Roll rule book - rock songs must contain 3 chords (no more, no less)