I've heard the idea that economically we are in an IP investment bubble at the moment due to the current IP arms race that is going on over smartphones and asso

I've heard the idea that economically we are in an IP investment bubble at the moment due to the current IP arms race that is going on over smartphones and associated internet/tech bobbins. This got me thinking that if we are in a bubble, what would an IP investment crash look like? And how would it be likely to start?