I read recently that half the patents in the MPEG-LA pool have expired, but you still are buying a license to them when you get a pool license.
I don't even know what that means. How do you buy (or have) a license to an expired patent? Maybe this just means expired patents are included in the list of patents licensed, but that's not even interesting enough to mention. The licensor and licensee must know they're expired, so they don't affect the price or anything else.
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