Mannheim state court spokesman Joachim Bock said judges dismissed both cases involving alleged patent infringements of the companies' respective slide-to-lock technology on mobile devices.Samsung Electronics welcomed Friday's dismissal of Apple's case against the firm, but it vowed to appeal the dismissal of its lawsuit against Apple. It also said a separate case regarding four alleged patent infringements is still pending with the Mannheim court. ___ Citigroup says Parsons to step down as chairman NEW YORK (AP) â¿¿ Richard Parsons, who was named chairman of Citigroup in 2009 just after the bank accepted $45 billion in federal bailouts, will step down from the position, the bank said Friday. The bank said Michael O'Neill, a Citi board member and the former CEO of Bank of Hawaii Corp., was expected to succeed Parsons. The Citi board will elect a chairman at the bank's annual shareholder meeting in April. Parsons, 63, a former CEO of Time Warner, has a reputation as a skilled negotiator, diplomat and crisis manager and is one of the most prominent black executives in corporate America. ___ APPA: Annual pet spending reaches all-time high LOS ANGELES (AP) â¿¿ Americans spent $50.96 billion on their pets in 2011. That's an all-time high and the first time in history more than $50 billion has gone to the dogs, cats, canaries, guppies and the like, the American Pet Products Association said in a report issued Thursday. Food and vet costs accounted for about 65 percent of the spending. But it was a service category â¿¿ one that includes grooming, boarding, pet hotels, pet-sitting and day care â¿¿ that grew more than any other, rising 7.9 percent from $3.51 billion in 2010 to $3.79 billion in 2011. ___ Union Pacific CEO to take medical leave OMAHA, Neb. (AP) â¿¿ Union Pacific said Friday that chief executive Jim Young will take a medical leave of absence to be treated for pancreatic cancer. He will remain chairman of the railroad's board while on leave.