UPDATE: 3/27/2013, 10:10 a.m. EDT. Information on the names of the lawyers from Weil also advising Yahoo have been added to the 11th paragraph of this story.

A relationship with a Hong Kong billionaire helped Squire Sanders land the role advising 17-year-old British app entrepreneur Nick D’Aloisio on his sale this week of mobile news aggregation reader Summly for a reported $30 million to Yahoo.