If you infringe on Apple's trademark, big or small, you're likely to draw their ire. If you infringe on Apple's patents and you're a small player, you're probably not going to.
Why? Trademarks have to be defended or they can be lost (not 100% accurate, but close enough). You can't say "I'll only sue companies who are bigger than x" when it comes to trademarks and still hold onto them. That isn't the case for patents. You can selectively sue (or not sue at all) and the patents remain valid.
Why? Trademarks have to be defended or they can be lost (not 100% accurate, but close enough). You can't say "I'll only sue companies who are bigger than x" when it comes to trademarks and still hold onto them. That isn't the case for patents. You can selectively sue (or not sue at all) and the patents remain valid.