In a fee dispute between Quinn Emanuel Urquhart & Sullivan and the former owners of ConnectU Inc., a New York judge has blocked an attempt by ConnectU to force rival Facebook Inc. to answer subpoenas seeking information on the value of its stock.

At issue is exactly how much of a contingency fee Quinn Emanuel has earned for its representation of ConnectU in the 2007 settlement of a high-profile trade secrets case that accused Facebook founder Mark Zuckerberg of stealing the idea for the social media site from his Harvard University classmates, the founders of ConnectU.