Beer giant Anheuser-Busch InBev’s merger with Mexico’s largest maker, Grupo Modelo, was thrown a hurdle by the Justice Department, which sued to block the $20.1 billion deal, saying it would threaten competition and raise prices for consumers. Boeing said it was sticking with the troubled lithium-ion battery technology that this month grounded its high-tech 787 Dreamliners, and that the grounding had no significant financial impact on the company’s 2013 forecast. Chief executive Jim McNerney said it was “business as usual” and that Boeing had not advised suppliers to slow shipments. Apple failed to persuade a U.S. appeals court to review its decision that allows Samsung Electronics to continue selling the Galaxy Nexus smartphone while a patent-infringement case is pending. Chesapeake Energy, battling a governance crisis and financial strain, said its chief executive, Aubrey McClendon, will leave the company April 1. McClendon, 53, is under scrutiny from federal regulators and his board for blurring the line between his personal dealings and those of the company. Time Inc., the magazine unit of Time Warner, said it is cutting 6 percent of its global staff of 8,000, or about 500 people. The unit publishes Fortune, People, Real Simple, Sports Illustrated and Time. BP won final approval of a $4 billion guilty plea that resolves all criminal charges against the firm related to the 2010 gulf oil spill. Chevron was fined nearly $1 million by California in connection with a fire at the company’s San Francisco Bay-area refinery last year. Investors who said they lost money in Bernard L. Madoff ’s fraud may not pursue a lawsuit against the Securities and Exchange Commission for missing the swindler’s Ponzi scheme, a federal appeals court said. Toyota released its tally for global sales for last year at a record 9.748 million vehicles, enough to dethrone General Motors (with 9.29 million). Barnes & Noble expects to shrink to 450 to 500 stores in a decade. It has 689 now. J.C. Penney is bringing back sales after ditching them last year and switching to an everyday low-price strategy. Apple debuted an iPad with twice the memory — 128 gigabytes — of older models, offering users more space to store movies, videos and books. Research in Motion unveiled new BlackBerrys in a last-ditch effort to regain relevance, and said it is changing the company’s name to BlackBerry.