Design patent search enables you to find similar or same designs already registered. This gives you idea if your design is novel or new. The search is not a legal requirement but it give you and idea on the strength of your design you are applying for.
Novelty and nonobviousness of a design claim are determined by a search of the design in the class in which it is to be applied. It is more better if an international search is conducted.
Intellectual Property Logium provides design patent search services.