Duane Morris LLP, a full-service law firm with more than 700 attorneys in 24 offices in the United States and internationally, offers innovative solutions to the legal and business challenges presented by today's evolving global markets.

Searching only the us patent office, from what i can tell, Duane Morris has security interests in only 5 patents (assignment database) --they are all 5 the flash R edig patents...based on this it might be that edig patents are the only us patent claims taken on by them on a contingency. :) just my opinion