Loser pays legal fees, but if i can get you to spend an order of magnitude or two more than my dying company is worth, well, that's the kind of flameout i could take some satisfaction in.
edit
Now that i think about it a bit, contacting the oppositions' customers and asking about their record retention policies seems like a great way to go. not a subpoena, just several repeated enquiries, an email, a letter, follow up with a phone call or two about about how do you store records, how many records might you have about opposition company, who are the employees who interact with the opposition company. Hit the VP's of HR, Accounting and whoever does legal.
You could probably get some really nice targeted facebook advertising for that set of people, "been scammed by x? call us"
Social engineering is scary.
The first or second episode sets up a legal battle, and the main character basically points out his company's staff lawyer to the opposition and says something to the effect of "We pay him $X, you can put hundreds of lawyers on this suit, we'll just have him."
However, reading this Business Insider article about the case (http://www.businessinsider.com/smule-ceo-shred-video-lawsuit...) really underscores the apparent sleaze on Smule's side:
> You compare a 100-person company with 10, 30, 40 million dollars in the bank to a two-person startup. If it goes to litigation, if we're wrong, we'll win.
> Right? We'll win. We'll put a giant law firm on it and we'll do all of the discovery and we'll do all the depositions and we'll win. And if we're right, we'll still win.
Pretty much no matter how you slice it, saying "even if we're wrong, we'll win" because of money in the bank sounds pretty awful.