While I can see a couple of similarities between Apple's and Prepear's logos - they're both 2D images of fruits - they're almost completely different in every other way: one is a pear, one is an apple; one is green, the other is black; one is outlined, one is a block colour; one has a chunk taken out of it, the other doesn't; one is rotated slightly, the other is upright.
Given that I'm not sure how anyone could mistake Prepear's logo for Apple's, why would Apple be concerned about this, or even dedicate the time and money to go after Prepear? Not to mention the risk Apple is taking of attracting bad press for aggressively going after a small company in this way.
Is this just a case of a legal team trying to justify their value by bumping up the number of trademark violations they've managed to prevent this month? Otherwise what would the motivation be to do this given there is obviously no trademark risk here?