Kodak began to struggle financially in the late 1990s as a result of the decline in sales of photographic film and its slowness in transitioning to digital photography, despite having invented the core technology used in current digital cameras. As part of a turnaround strategy, Kodak focused on digital photography and digital printing and attempted to generate revenues through aggressive patent litigation. In January 2012, Kodak filed for Chapter 11 bankruptcy protection in the United States District Court for the Southern District of New York. In February 2012, Kodak announced that it would cease making digital cameras, pocket video cameras and digital picture frames and focus on the corporate digital imaging market. In August 2012, Kodak announced the intention to sell its photographic film (excluding motion picture film), commercial scanners and kiosk operations as a measure to emerge from bankruptcy.