i4i Says OpenOffice Does Not Infringe Like MS Word
I Don't Believe in Imaginary Property writes "After the permanent injunction barring Microsoft from selling Microsoft Word, many armchair lawyers and pundits wondered how the ruling would affect OpenOffice. The company with the patent, i4i, believes that OpenOffice does not infringe upon it. But lest anyone think that therefore ODF will win out over OOXML, keep in mind that Microsoft has its own broad XML document patent, which issued just two weeks ago, having been filed in December 2004, and they're telling the Supreme Court to apply the Bilski ruling narrowly, so that it doesn't invalidate patents like theirs (and i4i's). After all, unlike most companies and individuals, Microsoft can afford $290 million infringement fines. Then again, given that Microsoft's new patent has only two independent claims (claim #1 and claim #12), and both of those claims 'comprise' something using an 'XML file format for documents associated with an application having a rich set of features,' maybe they wouldn't be that hard to work around if you just make sure any otherwise infringing format is only associated with an application lacking in the feature richness department."
The claim about the MS patent affecting ODF is not true. See here for details.
It's a decision based on the facts of the matter. OOXML has a mechanism (called "CustomXML") which does what the i4i patent describes. ODF doesn't have anything like it.
This piece by Amy Wohl is the only writing on this subject that comes remotely close to explaining what is going on.
In short, i4i's patent only covers some specific use of XML that is only widely used in the medical field. Microsoft is violating that particular patent.
i4i is apparently not claiming that they own a patent against all of XML or anything.