"Last week, Microsoft promoted Horacio Gutierrez, formerly vice president of intellectual property, to corporate vice president. This week, Gutierrez polished his new business cards and sent them TomTom's way, with a patent infringement lawsuit. As CNET News' Ina Fried reports, Microsoft on Wednesday launched a patent infringement lawsuit against TomTom, maker of GPS systems. Lawsuits are filed all the time, but this one is of particular interest to the open-source community because it includes three claims of patent infringement related to Linux file management technologies. Glyn Moody wonders whether Microsoft has taken the first step in an all-out patent offensive against Linux. After talking with Gutierrez earlier this week, I highly doubt that."