It depends whether or not they are sued in a state where SLAPP suits are legal. If Apple isn't forced to provide compelling evidence that they have an actual case up front, they can tie up their opposition in expensive legal battles long enough that it won't matter whether or not they win the case. Their opposition may be victorious legally, but made bankrupt in the process.

Of all the things the U.S. legal system got wrong, I think not following the English rule of attorneys' fees was one of the biggest mistakes. If plaintiffs had to pay for the defendant's legal fees, and vice versa, should the opposing party win their case, large corporations might think twice about making spurious legal claims.