Most likely it is this. Sometimes it could mean the two parties have reached an agreement but more than likely they are waiting on the appellate decision.
Agree! The case is on hold until the appeal Purdue made after losing the patent case to Intas goes through the courts. Looks like that appeal is coming up in mid Feb.
This line says they lost a patent case to the Indian company:
This line says Purdue appealed:
This line says appealed case is in mid - Feb
Then in section labeled 2 it goes on to say that this case will be on hold for 6 months maybe longer.