For a second time, a Superior Court jury in Washington, D.C., has ruled that a former partner of Sonnenschein Nath & Rosenthal was undercompensated for his origination work concerning a case over the bombing of a Pan Am flight above Lockerbie, Scotland. And this time Douglas Rosenthal (no relation to the firm's name partner) got around $500,000 more, reports the Blog of Legal Times. His lawyer says Rosenthal expects to receive about $2.1 million. Although liability has previously been affirmed by the D.C. Court of Appeals, the appellate panel gave Rosenthal the option of another trial on damages, which he…