The law firm in question is Carr & Ferrell, a company which specializes in intellectual property law. This was the law firm which represented Burst.com in a patent infringement case against Apple dating back from 2006 (this was settled last year when Apple agreed to pay Burst.com $10 million). The law firm also backed Burst.com when it went up against Microsoft, a move which earned the company $60 million in an out of court settlement.
The documents filed yesterday extends Psystar's deadline to respond to the lawsuit from next Monday to August 18.
I still don't fancy Psystar's chances of being able to beat Apple in court, but this latest move means that case just got a lot more exciting.