No, the claim is that by skirting the Personenbeförderungsgesetz (Law on transporting people), Uber is violating the the law about unfair competition. Any competitor in germany can sue any competitor on those grounds: If you engage in unfair business practices you'll be fined.

Nobody claimed (at least in this case) that Uber itself should be banned - UberBlack is unaffected by this injunction. Ubers unfair business practices have been banned.