The agency's six commissioners would then decide by May 23 whether to alter the initial determination by its chief administrative judge, Paul Luckern. Kodak has amassed more than 1,000 digital-imaging patents, and almost all digital cameras rely on that technology. Mining its rich array of inventions has become an indispensable tool in a long and painful turnaround. That campaign was stalled by the recession, which began just after Kodak completed a three-year, $3.4 billion digital overhaul in 2007. Its payroll has plunged to 18,800 people, from 70,000 in 2002. Kodak's shares jumped 28 cents to $3.41 in afternoon trading. They are trading at the lower end of a 52-week range of $2.90 to $9.08, however. After failed negotiations, Kodak filed a complaint against Apple Inc. and Canada-based RIM in January 2010 with the commission that oversees U.S. trade disputes. It also filed two lawsuits against Apple in federal court in Rochester, but it has not specified the damages it is seeking.