The patent for pinch-to-zoom was filed in 2007, and awarded to Apple in 2010. It covered how software would distinguish between the scrolling movement of one finger and two-fingers gestures like pinch-to-zoom on a touchscreen; and, the patent has been a big part of Apple's $1 billion win over Samsung in court. So, this new ruling could have a significant impact on Samsung's appeal bid.
The USPTO had issued a preliminary ruling in December 2012 that the patent claims were invalid; and, today in a "final office action", all 21 claims by Apple were rejected for either being anticipated by previous patents or for being unpatentable. Looks like it only takes the USPTO 6 years to work through a patent to figure out it's a logical conclusion. We're sure that will help the office work through the huge backlog of patents it has on its hands.