Rock Creek Pharmaceuticals Inc. isn’t the only company whose recent bankruptcy has left several big firms holding the bag for outstanding legal bills.

Cooley, one of the fastest-growing firms in the Am Law 100, is owed a collective $1.57 million in fees from Implant Sciences Corp. and Sotera Wireless Inc., two companies that filed for Chapter 11 protection in Delaware and San Diego, respectively. A Cooley spokeswoman did not immediately return a request for comment on the matter.