Wednesday’s ruling by the United States Patent and Trademark Office leaves the Washington Redskins with little defense against trademark infringement, according to two professors at the University of Virginia School of Law. The team can continue to use the Redskins name, said Dotan Oliar, a UVa professor specializing in intellectual property, but the lack of trademark protection could cut into its merchandising revenue. Edmund W. Kitch, who also teaches intellectual property law at UVa, said the team might be able to keep its name and keep up merchandising revenues. The team might, for e...