I was recently asked to look into a Chapter 11 case by a company that licensed software to the debtor company.  The client had a significant pre-petition debt, and was not being timely paid in the Chapter 11 even though the debtor (a very large technology company) continued to use the software. 

Coincidentally, Bob Eisenbach recently posted an article in his Business Bankruptcy Blog on that subject: Protecting IP Rights From A Licensor’s Bankruptcy: What You Need To Know About Section 365(n).  I passed the article on to the client’s corporate lawyer as a summary.