Urban Outfitters rip off independent t-shirt company?

Johnny Cupcakes, a small t-shirt designer with his own clothing line, claims that he was ripped off by Urban Outfitters. Says Johnny:

Urban Outfitters have just released a shirt with a jet dropping cupcakes (with a different color scheme) which is the exact same thing that Johnny Cupcakes released around 2 years prior. [...] I know over a dozen people that work at different Urban Outfitters across the US, and they've told me this happens all the time. [...] I am Johnny Cupcakes, this company is my life, and this awful, scummy situation upsets me.

Link (via BoingBoing)