I see a bit of confusion by some in that they seem to think that these patents somehow only apply to streaming video. This is not the case.
The first five patents listed at
http://www.acaciaresearch.com/dmt/dm...tlpatents.html are the subject of contention and they are all related, in that the later patents are continuations of the earliest, 5,132,992. I guess you can look at Patent No. 6,144,702 as the final elaboration/description of the invention they claim is theirs. But, since that is (within the "Parent Case Text" of the patent) based on the earlier four, we have an effective filing date of Jan. 7, 1991.
(This means prior art searches must be done within publications before
1991, instead of 1992, which I mistakenly gave earlier.)
So, we have to consider the "claims" of patent # 6,144,702 to see what sort of invention they say we're infringing. It's within the "claims" that the specifics of how the invention accomplishes what it says it does that give the patent vadility. You can't patent an idea or concept of a machine that sews clothes, but a
specific arrangement of gears, cogs and levers used for sewing clothes can be.
There are 42 claims within
patent # 6,144,702, but they boil down to this:[list=1][*]a way of storing compressed, digitized media [*]in a library that has a listing of the offerings[*]which is used to choose a selection[*]for download and viewing by users of the system.[/list=1]
That's a basic (probably too basic, I'm still working on it and would appreciate feedback) cliff notes version of the claims. And, it certainly describes how we use video files on our sites, whether streamed or not.