Bankrupt GM won a patent suit for its popular OnStar navigation system
July 2nd, 2009 — lakshmikanthttp://www.cafc.uscourts.gov/opinions/08-1259.pdf
In an interesting case, bankrupt GM won a patent suit for its popular OnStar navigation system.
The OnStar navigation system acts like a warning system for manouever points that are going to come up within a certain pre-specified distance from the car. The calculations regarding the relative position of the car from the manouever point is done remotely, and the only information displayed in the device in the car is the ‘distance value’ to the manouever point.
VIP had filed a patent in which the co-ordinate of the manouever point is downloaded and compared with the car co-ordinates (obtained using GPS systems) on the mobile system. They do not represent the distance between the manouever point and the car co-ordinates as scalar values, but simply represent them on a scale ‘relative to each other’.
On this semantic difference VIP lost its case against GM in both the district court and the Federal Appeals court. The CAFC and district courts did not find any reference of possibility to display scalar values on the mobile device either in the Patent specification or at anytime during the patent prosecution history.

