Interesetingly enough, if you read on about more current cases it mentions Sony vs Connectix, which I thought Connectix lost, but actually the ruling was overtu

Interesetingly enough, if you read on about more current cases it mentions Sony vs Connectix, which I thought Connectix lost, but actually the ruling was overturned on appeal. From the ruling: "Some works are closer to the core of intended copyright protection than others. Sony's BIOS lay at a distance from the core because it contains unprotected aspects that cannot be examined without copying. The court of appeal therefore accorded it a lower degree of protection than more traditional literary works." Thus one could try to make the same case for Skype.