In a down year for big corporate bankruptcies, Skadden, Arps, Slate, Meagher & Flom bagged a big assignment Monday for Seattle-based biotechnology company Dendreon as the prostate cancer drug maker filed for Chapter 11 protection in Delaware in a bid to restructure a $620 million debt load.

Kenneth Ziman, a deputy head of Skadden’s corporate restructuring group in New York, is leading a team from the firm serving as lead debtor’s counsel to Dendreon, which will now try to sell itself or its assets in a bankruptcy court in Wilmington.