Microsoft Patents XML Word Processing Documents
theodp writes "Embrace. Extend. Patent. On Tuesday, Microsoft was granted US Patent No. 7,571,169 for its 'invention' of the Word-processing document stored in a single XML file that may be manipulated by applications that understand XML. Presumably developers are protected by Microsoft's 'covenant not to sue,' so the biggest question raised by this patent is: How in the world was it granted in light of the 40-year history of document markup languages? Next thing you know, the USPTO will give Microsoft a patent for Providing Emergency Data in XML format. Oops, too late."
As is all too often the case here on Slashdot, the summary has seized upon the title of the patent, which has no legal effect whatsoever, while ignoring the actual patent claims, which are all important.
If one actually reads the claims, one sees that the main new part of the invention are the 'hint elements' contained in the XML file. The written description expands upon what hint elements mean: "hints are provided within the XML associated files providing applications that understand XML a shortcut to understanding some of the features provided by the word-processor. By using the hints, the applications do not have to know all of the specific details of the internal processing of the word-processor in order to recreate a feature."
Basically, the invention here is the inclusion of information that lets third-party programs better understand what to do with the format. You can imagine, for example, if HTML included something like this. The del ('strikethrough') tag might be written:
That code would allow a program that did not natively understand the tag to implement a simple version of it. The idea is to allow new features to be introduced into the format while enabling older versions of the software to use them without updating their code. The necessary code comes with the file.
Now, whether that's still new and nonobvious, I don't know, but it's a significantly more accurate summary of the invention than "Microsoft Patents XML Word Processing Documents."