I think that if you knit something for your personal use, you can put anything you want on it. I'm not going to avoid, say, Sesame Street characters because they are trademarked. I think if you were to sell something with a logo on it, or sell a pattern with it on, I think then you'd be infringing on copyright laws.
That's just my opinion, based on common sense. I have no idea of the legalities.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry