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http://www.geekwire.com/2011/microsoft-cites-new-patents-vs-... -- Here are the details about the patents. It's pretty childish stuff. Anyone with half a brain can innovate and come up with inventions. This is just bullying.
Lets look at these patents.

Remote retrieval and display management of electronic document with incorporated images -- this patent actually falls in the ballpark that it might be reasonable. It was granted in 1998 and filed in 1996. I don't know if there was prior art on this.

Loading status in a hypermedia browser having a limited available display area -- This is called a splash screen. Sure its a mobile device and getting data from the network rather than disk, but same concept. This shouldn't have passed the obviousness test.

System provided child window controls -- This one was filed in 1994, prior to the launch of Win95. This seems borderline, but in 1994 this might have been innovative.

Selection handles in editing electronic documents -- This one seems like maybe the only realy legit patent if limited to just text. But I think it has been well-established for graphsics. The odd thing is they didn't use this for Windows Mobile through 6.5.

Method and apparatus for capturing and rendering annotations for non-modifiable electronic content -- This one doesn't pass the non-obviousness test to me. I can't think of another way to do what they described. A little disappointing since Thacker is on the patent.

One problem with patents is that it's hard to really get back to the mental state of 17 years ago, when at least one of these patents was filed. At the very least I do think that the current bar of "clear and convincing" may be too high, since I think that makes it very difficult for BN to put together a strong case unless they can just outright find prior art.

> Remote retrieval and display management of electronic document with incorporated images -- this patent actually falls in the ballpark that it might be reasonable. It was granted in 1998 and filed in 1996. I don't know if there was prior art on this.

How about this:

> Portable Document Format (PDF) is an open standard for document exchange. The file format created by Adobe Systems in 1993 is used for representing documents in a manner independent of the application software, hardware, and operating system.[2] Each PDF file encapsulates a complete description of a fixed-layout 2D document that includes the text, fonts, images, and 2D vector graphics which compose the documents.

The part of the patent that is interesting is that they optimize downloading of the electronic document by first ignoring the background image (if there is one). And if there are embedded images in the document they first download those that would be visible on the screen. And it also creates additional connections to the server to download other resources in the document in the background on these additional connections.

AFAIK, PDF doesn't specify these things. And to be clear the patent isn't about a file format. It's about the method one uses to retrieve and display the document.

I am quite sure pre-98 Netscape did that.
The filing was April '96, so it would have to be before that. Netscape may have. In which case, this will be easy to invalidate. If Netscape didn't, I think it will be a lot tougher as the current bar for invalidating patents in court is pretty high.
I'm quite sure that somehow, there was a web server or email system that has transferred, stored, and otherwise "managed" a PDF with graphics in it in 1995 or before. How on earth is that not prior art?
What does managing a PDF with graphics have to do with it? Is there something inherent in PDF files that capture this behavior?
I'm pretty sure a PDF is served as a single file. The 'parts' of a PDF aren't loaded seperately, and hence aren't streamed individually of the entire document.
Though this is clearly political wrangling, I think Microsoft should be careful about claiming publicly that anything patented by them is "natural"... Natural is very close to "obvious"... which is bad for patents:

"natural ways of interacting with devices by tabbing through various screens to find the information they need"

Good point. That that their lawyers are freely using the word "natural" just shows how egregious they are.

They don't really care if the claims have merit, all they care about is the legal expense and risk it imposes on the defendant.

I doubt B&N can afford adequate defense, and that's why MS is after them with such obviously invalid claims.

I would love if B&N went all in, proved the claims are without merit and countersued with a vengeance.

MS is suing several Android device makers simultaneously. Along with Google, there's an obvious incentive for them to pool their resources.

Not to mention that Google has a few patents of its own of course.

Google having few patents is not relevant in the case Microsoft's patents are invalid. And every manufacturer who is yet to be extorted should pool the resources they set aside for licensing Microsoft's IP to invalidate Microsoft's patents for less money than would otherwise be needed (and to reap profits from the inevitable countersuit).
Entirely relevant: It's way easier to threaten an opponent with an extremely long legal war that would be quite damaging to them (and then come up with a cross-licensing deal) than it is to engage in a long legal war to invalidate patents.

Sure, it's not the best thing to do, but it's better for all concerned.

I'd cut Microsoft's access to Google. Let them try to function with only Bing results ;-)
Their message is clear: embed android in your product and we will sue you. Without indemnification from Google, people will be very hesitant to touch Android I think. Not good at all.
That's why Google should help B&N in invalidating the said patents (something that doesn't look that difficult, provided you have the resources)
Actually it seems to be use Android and you will pay us. Which is absurd. The US patent system is totally out of control.
Is the EFF the most effective organization that accepts donations to fight this type of thing?
This is Novell all over again. They settle for a couple million, and microsoft "buys" Hundreds of millions of dollars worth of "stuff" It is bribery to set a precedent; plain and simple. Despicable stuff.
Microsoft: competing in the courts.
Are they still not producing which patents these people infringe on? How anyone, especially techkies, could pat MS on the back at any point in history is beyond me. MS is still at war with open source
I'm going to make this a stand-alone comment instead of inserting it to an existing comment thread, because there are too many places it could be reasonably inserted.

If you do not read the description of a patent, and then read the claims, interpreting them in light of the description, you have NO CLUE what the patent covers. If you do read the description and claims, then you MIGHT have a good idea of what the patent covers. To fully understand it, you have to get a copy of the file wrapper, which contains the correspondence between the Patent Office and the applicant.

The file wrapper is important because if the applicant argues for a narrow interpretation of something in the patent in order to get the examiner to approve, that narrow interpretation is what will apply when the patentee tries to enforce the patent.

For those who want to read the patents, I recommend using pat2pdf.org to get them. You can give that site a patent number and it will give you a nice PDF of the patent. The links most people are citing (including the submitted article) are to the USPTO, which is not as nice. In particular the images are not available on some OS/browser combinations. A PDF from pat2pdf.org works everywhere.

I don't know if there is a way to get the file wrapper for free, but you can get the history for free from the patent office. To illustrate how important the file wrapper can be, of the patents in question:

5,778,372: it was initially rejected (a non-final rejection, which I believe means the examiner is open to hear more arguments).

6,339,780: it was rejected five times (3 non-final, 2 final which I believe means Microsoft had to convince someone to override the examiner but hopefully a patent attorney or agent will jump in and clarify).

5,889,522: rejected three times (2 non-final, 1 final).

6,891,551: two rejections (1 non-final, 1 final).

6,957,233: two rejections (1 non-final, 1 final).

PS: it looks like you can perhaps get the documents in the file wrapper free online here: http://portal.uspto.gov/external/portal/pair